Plumbing in West Auckland is always a wonderful experience. This client wanted their hot water cylinder upgraded to mains pressure and connected to their underfloor heating which is a relatively straightforward and stress free job. What made things easy was the location of the client’s existing cylinder.
Because the hot water cylinder was located outside it meant we were able to remove the broken cylinder and install the new one without much hassle. This is what makes plumbing in West Auckland so enjoyable. Most of the homes have their hot water cylinder situated outside, making the whole process quick and easy. It means we are able to access all the plumbing easily and have a little more space to move around.
There are also benefits for the client too. Having your hot water cylinder outdoors provides a couple of benefits. Firstly, it frees up space inside giving you another closet for storage or room to expand your kitchen during a renovation. Secondly, if your hot water cylinder was to leak, then your home would be protected as the water would simply spill outside rather than into your carpet.
If you are in West Auckland and need some plumbing done, then call the team at Hot Water Cylinders NZ. Contact us online or call 0800 832 638.
Our client had a leaking Vulcan Freeloader, which was new in the 90s. The issue was there was no hot water from the Vulcan Freeloader, and upon investigation, we found that the tank was leaking internally. This is not uncommon for old Vulcan Freeloaders. When the leak starts, it can often drip onto the pilot light putting out the flame and leaving the tank with no hot water. In the case of this job and for most of the callouts we get for Vulcan Freeloaders, the issue was not reparable and required a replacement tank.
Luckily for our client, the timing lined up perfectly with the release of our new deal for a replacement. Our new “all including” sale features everything involved and no need for third-party contractors! You are left with a system that can produce enough hot water for the largest of familys, while still maintaining the efficiency of a smaller tank or an on-demand system. Not only that, The Rheem Stellar is one of the most efficient domestic gas storage water heaters available in New Zealand. Available in Natural Gas only, this water heater has high flow rate capabilities making it ideal for homes with more than one bathroom and with moderate to high water use.
No electrical connections are necessary so the Stellar will continue to work even if the power goes out. Stylish design and construction carries a 10 year warranty. Don’t wait till it’s too late. If you have an old Vulcan Freeloader, chances are it coming up on the end of its life. Why wait when you can install the new Rheem Stellar today and start getting the savings back immediately!
The install was quick and easy, and in the end left the client satisfied. We always love jobs bringing hot water to the Northcote. If you need a new Hot water unit, call us at 0800 429 546 or contact us on our website.
It’s quite interesting how many options NZ homeowners have when it comes tot heating water. There are different types you can choose from. One of which, namely, the tankless or instant water heater is among the most popular types because they tend to be more energy-efficient than the heated water storage option. Are you considering switching to this option? If yes, knowing how the system works can help you understand why you should choose it as your new source of heated water. Check out our discussion below and learn more about how a tankless or instant water heating system work.
What is a Tankless Water Heating System?
Instant water heaters are not a novel option in many countries, especially in Japan and Europe. It has gained quite a lot of traction in recent years because it’s relatively more sustainable to operate than the heated water tank option. As the name suggests, this system doesn’t need to draw water inside a water tank. Instead, it instantaneously heats water as it passes through the heating chamber inside the appliance.
On average, your instant water heater can generate up to 5 gallons of heated water per minute, which is more than enough for bathing, washing dishes, and doing the laundry for a small household.
How a Tankless Water Heater Works
Essentially, an instant water heating system comprises of a few parts, including the heat exchanger, safety elements, water valves, temperature sensors, combustion elements, combustion chamber, control panel, and vent. Some, especially those powered by natural gas, include additional features like a gas valve and a burner.
The heating process is quite straightforward. Once you turn the faucet, the water starts getting drawn into the pipes. Then, the system’s water flow sensor activates, triggering the heating element to switch on. This process allows the flowing water to reach your preferred temperature. Once the flow sensor stops sensing water flow, it shuts off, effectively disabling the heating element.
Most models also come with a thermistor. Essentially, this component ensures that the temperature of the water flowing out of the taps does not exceed normal or safe levels. This prevents accidents and other untoward incidents while you use heated water.
Top Reasons Why You Should Consider Instant Water Heaters
With the many options available, you might still have a few reservations about installing a water heater. To help you understand why it’s a worthy option, here are the key benefits of using a tankless water heating system:
No need to wait long before hot water is ready for use – Within a few seconds after switching on the tap or showerhead, the heated water will start flowing.
Save energy used to heat the water inside the storage tank – Imagine how much this would help you reduce your household’s carbon footprint.
More savings on your power bills – Consequently, you no longer have to spend as much money on your monthly electric bill because you don’t have to use up more energy to heat water.
More durable make and design – Compared to other water heating options, tankless systems tend to last longer. If well maintained, your chosen instant heater can last for up to 10 years – a worth-it investment, especially for a small household.
A smaller space requirement – This is quite a considerable advantage, especially if you don’t have enough space to spare for your water heating equipment.
There are, of course, some slight disadvantages that you need to know about before shopping for a tankless heater. For starters, the upfront costs may be expensive. Your average spending on the system would all depend on the model you choose and the average water consumption of your household.
Also, you will need to have a professional installer on board, especially if you’re using a high-powered heater or a model that utilizes natural gas. Such models usually need specialized vents and other additional requirements. If you don’t mind dealing with these disadvantages, then you might indeed find the instantaneous water heater a good fit for your home.
I’m Ready to Make the Switch, Now What?
There are definitely a lot of reasons why it makes more sense for some households to use a tankless system. If you’re among these folks, check out the list of things you’ll need to consider when choosing what type of tankless water system you should use:
The temperature difference between the groundwater and your preferred setting
The type of faucets you have in your kitchen and bath
The showerhead flow rate which you cancalculate on your own or check with the manufacturer
Feel free to consult with our team if you have a hard time figuring out what you need for your home. Also, you can contact us any time you need help in installing a water heater. Contact us today at HWC NZ for your water heating needs in New Zealand.
It’s quite rare for people to worry about high water pressure. However, when it does happen, it could cause a lot of problems. If you fail to address the issue or protect your system using the right piece of equipment, you could end up spending thousands of dollars on repairs or replacement. It could also result in damaged appliances such as laundry machine and dishwashers.
Several things can cause high water pressure. For example, supplying companies have to ensure that all of their customers get enough water supply. Hence, they sometimes have to use high pressure to pump the water, especially in areas dotted with high-rise buildings. Another factor that could cause your problem is thermal expansion, a common issue triggered by water heater use.
It’s not possible for the supplying company to reduce the water pressure, so your only option is to have it adjusted using a pressure reducing valve.
What is a pressure reducing valve?
Essentially, a plumber installs a water pressure reducing valve near your water meter to control the hydraulic pressure coming from the main line. It’s crucial to double check the type of pressure reducing valve you will install to ensure that they work well with your system.Here are the main three types you can find in the market:
Direct-acting – It’s the simplest and most economical type which works well with both convoluted bellows and a flat diaphragm. This type of PRV works best for low to moderate water flow.
Externally piloted – This type of PRV comes with double diaphragms, which allows for higher capacity and increased sensitivity to water flow and pressure changes. It also offers you the flexibility to make use of different pilot valve types such as soleniod, air-loaded, pressure, temperature or combinations.
Internally piloted – It incorporates a main and pilot valve and uses inlet pressure to open the valves. Compared to the direct-acting type, it has a higher capacity and accuracy. It also senses pressure internally, so you don’t need to add an externally installed sensing line.
To know which among the three would best fit your system, you should consult with a professional plumber. They can provide you with the necessary details to help you decide.
How does a PRV work?
Now that you’re acquainted with what a pressure reducing valve is plus its three main types, let’s take a closer look at how it works.
A typical PRV is designed to work even in the harshest environment. Regardless of pressure or upstream flow fluctuations, a PRV ensures a steady downstream pressure. It does this with the help of its major components such as the valve body, pilot regulator, and control filter. Here’s how each part works:
Valve body – It stabilises the returning water flow while regulating the pressure.
Pilot regulator – Think of it as the “brain” of the valve body. Basically, it determines the water flow coming in and out of the chamber.
Control filter – Located inside the valve system, this filter helps you minimise damage because of accumulated debris coming in from the main line.
The system works by opening or closing the valves depending on the available upstream flow. So, for example, if the pressure in the upstream line is high, the pilot regulator drops the plunger, triggering the valve to gradually open. Consequently, if the upstream flow is low, the pilot slightly lifts the plunger, causing the valve to slightly close.
This all happens continuously, even if you don’t use water. It’s a straightforward process that happens quite fast. With the right pressure reducing valve in place, you can ensure that your household or commercial space gets enough water and protect your system from all kinds of pressure-induced mishaps.
Shop for a Pressure Reducing Valve Today!
You’d be surprised by the usefulness of a tiny piece of item like a pressure reducing valve. With it in place, you can avoid nightmarish situations such as burst pipes, damaged water consumer lines and defective appliances. The best part is that they don’t cost a lot of money.
If you live in an area here in New Zealand where the water pressure is too high such as Christchurch, you will definitely need a PRV installed. If you’re not certain about the water pressure of the supply line, you may find it useful to check it yourself using a water pressure gauge. You can also stay on the look out for common signs of high water pressure such as:
Banging noise in the pipes
Low water supply in your hot water cylinder
Unreasonably high water bill
Unexplained noise coming from your dishwashers or washing machine
Looking for a water pressure reducing valve for your plumbing system? Find the perfect one here at Hotwater Cylinders. You can choose from more than hundreds of items in our product catalogue. If you need more information about a product, don’t hesitate to get in touch with us.
Hot water cylinders are widely used in the country, especially in residential areas. The system is usually comprised of water pipes connected to a broiler. Heated water travels out from the tank to the kitchen tap, bathroom shower, or any other parts of the house that require water use. Then, as the hot water exits, the tank draws in cold water and heats it again. The cycle repeats every time you use up water. According to Smarter Homes, with proper cylinder maintenance, you will never run out of hot water in your household for about 20 to 40 years.
Unfortunately, hot water cylinder maintenance is most likely the last thing you think of when you list your usual home maintenance tasks. If you want to ensure your cylinder’s optimum condition, be sure to schedule regular check-ups and maintenance. You can start your routine by testing the water quality.
You can use chlorine and hard water testing kits to check your home’s water quality. Alternatively, you can call in a plumbing company to have the water checked, and the cylinder inspected for possible damage.
Why Checking the Water Quality Matters
Not too long ago, Stuff published a report on Michael Neilson, a homeowner in Christchurch, who complained about his hot water cylinder failing after adding chlorine to the water. Neilson holds the Christchurch council accountable and demanded them to shoulder the $2167 bill. He is the second person to challenge the board in the last few years after the chlorination of the city’s water supply. Both the plumber and insurer confirmed his claim explaining that the damage indeed resulted from too much chlorine.
The council has confirmed in earlier reports that the chlorine content of Christchurch’s water is indeed high. And yet, they still haven’t paid for the bill of Mr. Neilson.
It is an upsetting situation, but it’s also the perfect example to emphasize the importance of checking water quality. If chlorine or other chemicals in the water exceed normal levels, it could result in a disaster similar to Neilson’s water heater problem.
How to Test Water Quality and What to Do When the Quality is Poor
If your water contains excessive amounts of chlorine, it could corrode the cylinder. In a typical setting, stainless steel doesn’t rust. But, if it’s exposed to chemicals such as chlorine, the passive layer of the metal slowly breaks down. The best way to get around the issue is to use chlorine treatment and filters. Also, if you move to an area with high water’s chlorine level, it may be worth it to invest in a copper cylinder.
On one hand, if the problem is caused by high levels of minerals like magnesium and calcium, your cylinder may suffer from pitting corrosion. The excess calcium or magnesium binds to free-floating chlorine. The process produces calcium chloride or magnesium chloride, which can attack both stainless steel and copper cylinders’ molecules. If you detect high levels of such minerals, you can use a water softener or schedule regular cylinder flushing.
With regular maintenance checks, it would be easier for you to spot potential problems. This way, you get to use basic solutions and prevent damages to your hot water cylinder. If you suspect damage on your cylinder due to high chlorine, calcium, or magnesium, it’s highly recommended to have it checked right away.
Call for Help When Needed
Oftentimes, it’s intimidating to do maintenance checks for usual home equipment like hot water cylinders. It can be challenging for some to spot the first signs of problems. Fortunately, there are a lot of professionals who can help you with plumbing works and water heater-related concerns. All you need is to call their attention and book an appointment. If you have problems with your heater, don’t hesitate to call for help.
The video will show the step by step procedure of installing the Rinnai Infinity A Series PCB Board. Please be guided accordingly
Keeping the packaging up to the side make sure you keep the manual so you can give it to the client later on and place the unit on flat surface where you can work comfortably.
Use a Philips screw driver and remove 4 screws holding the front panel on. There is one on each corner.
Unpack the PCB board, be careful with it because it’s electronic, you’ll see that there are 5 ports that we will be connecting. They are all in a different shape.
Find 5 different wires on the unit that you will be connecting and notice that there is a pin at the bottom of the board that locks the PCB into the unit itself.
Find the correct set of wire and plug them into the corresponding ports on the control board. You can’t really get this wrong because they will only fit one way as they are all different shapes. If they don’t fit, DON’T force them and try another.
Now carefully drop the PCB into place and push the pin into the unit itself. You’ll see that it will lock it by going through the galvanized steel at the bottom of the device.
There is one more screw that you need to put on to keep the board secure inside the unit. You can ee that here. Use an appropriate tool so as to avoid hitting any cables or scratch the PCB.
Put the front board back on and put all 4 screws back in place with your driver. Be careful don’t over tighten Once you completed these, you’re pretty much good install the unit. Job complete.
Please make sure that once you have installed the unit you strictly follow the manufacturer’s commissioning instructions. Only attempt this PCB installation if you are qualified and competent to do so. Hot Water Cylinders NZ do not take any responsibility for following instructions within this video.
Online shopping is now a huge part of the new norm. More and more customers prefer to shop online because of convenience plus the larger selection of items they can choose from. However, there are still some folks who have a hard time figuring out if online shopping works for them. This is especially true for those who need to purchase home equipment such as hot water cylinders.
In most cases, buyers looking for hot water cylinders prefer to head over to their favourite shops to check their options. But, in truth, it’s very much possible to shop for such items online. And it’s quite simple to do so. Check out the short online shopping guide for hot water cylinders.
Buying trusted brands
The first thing you need to do when shopping online for specialised items such as heat pumps and hot water cylinders is to look for trusted brands.
Look for water heating equipment brands that are tried and tested by customers, that way you get the best value for your money. A good way to assess a brand’s credibility is doing a quick research online. Find out what customers say about them. Are they getting legitimate positive reviews? Do people say negative comments about the quality of their products.
Check their web presence too. The majority of established companies that offer hot water cylinders and other water pump equipment have a strong online presence both in their website and social media. They also provide detailed descriptions of their product features and even troubleshooting guides.
Some of the best water heating system brands in the market include:
Long standing reputation
Besides checking the brand of the product, you should also look at the credibility and reliability of the shop. Find out how fast can they deliver the product? Do they provide an installation service? How about their orders and returns policy? Have you heard of customers complaining about a product they received?
It’s also crucial to read a shop’s shipping policy. Find out how long it takes for the shop to deliver an item. Which couriers do they use? Do they have their own courier? Do they offer international shipping? Is it possible to track your order?
Make sure to check everything about the shop before you complete a transaction. This way, you can set your expectations and find a seller that can meet your demands.
What to look for when buying hot water cylinders online
Water cylinders and heating systems are considered as highly critical appliances used in homes. Choosing the right one can mean a lot for you and everyone else living in your house. So, here’s a quick breakdown of everything you need to consider when shopping for a hot water cylinder online:
The cylinder’s water holding capacity – Typically, water heating cylinders can hold around 45 to 500 liters. There are also modern models that have a higher water holding capacity. When considering the water holding capacity of cylinder, you need to have a rough estimate of the peak water usage of your household.
The energy source of the heater – Water heaters can either powered by electricity, solar power or gas. It can be expensive to switch from one power source to another, so you need to figure out which option works best for you before you shop.
Drain valves – Check the product description to see whether the heating cylinder comes with brass or plastic drain valve. As much as possible, you should stay away plastic valves because they tend to wear out faster.
Product warranty – Like in buying any product, you need to check the warranty period. In most cases, water heating cylinders come with product warranties lasting anywhere between 3 to 12 years.
Main pressure vs Low pressure – Unvented or main pressure systems deliver hot or cold water to the outlets at a consistent pressure. Low pressure systems on one hand can come in two types. The first one makes use of pressure-reducing water valves to minimise the pressure coming from the main water source. The other one makes use gravity to feed water from the header tank to the storage water tank.
Top 5 Hot Water Cylinders in NZ
Rheem 160L Stellar Main Pressure Gas Hot Water Cylinder
If you are looking for a gas-powered water heating unit, the Rheem 160L Stellar is a good option. It can support peak water usage for around 3 to 6 people. It comes with 10-year product warranty plus 5-year labour warranty. The product is among the most efficient hot water cylinder in New Zealand as it comes with high flow rate. It works perfectly for one-bathroom homes with high to moderate water consumption.
Rinnai 180L Duplex Hot Water Cylinder
The Rinnai 180L 2KW duplex hot water cylinder is an electric-powered equipment. It’s also heat pump ready and made from premium quality stainless steel. It measures 550 mm x 1295 mm and can hold up to 180 litres. Additionally, it comes with a 2KW heating element.
Rheem 27 Continuous Flow Gas Heater
Need an economical gas heater? The Rheem 27 Continuous Flow Gas Heater is one of the finest options in the market. It is equipped with a digital display and an overheat protection system. You can either use LPG or natural gas to power the heating element of the equipment.
Green Glo Solar Ready Water Heating Cylinder
If you prefer using a solar-ready water heater cylinder, you can check out the Green Glo 180S. It has an enameled steel case and has a maximum heat exchange temperature of 95 degrees Celsius. The cylinder has a 520 mm diameter and 1660 mm height.
Dux Proflo 315L 3.6 KW Water Heating Cylinder
The Dux Proflo 315L cylinder is a versatile heating equipment that can be used in an outdoor or indoor setup. It comes with a 7-year product warranty plus 1-year labour warranty. It features a full flow water pressure system plus an enameled steel casing to ensure its durability.
Need to buy a water heating cylinder today? Get in touch with our team or check out our product catalogue for hot water cylinders in New Zealand. We offer an extensive selection of products that would fit your needs, plus we can also install the equipment upon your request.
Starting in 2012, it is no doubt that Thermann has become one of the fastest-growing hot water brands in both Australia and New Zealand. Thermann has identified only the best hot water technologies and has designed a range of systems that continue to be trailblazers in the hot water market. This makesThermann water heaters the #1 choice for more and more plumbers across New Zealand.
Thermann stays true to its passion and mission to provide only the best quality of products with its continuous flow hot water systems, helping households and establishments all around.
Why Thermann Could Be For You
Continuous flow hot water systems utilize the flow of water, providing a continuous stream at the temperature you desire, without having the extra baggage of storage! One great advantage of this type of hot water system is that it only utilizes energy when you need heat, making it immensely efficient and can help you with cutting costs, especially during the cold season. Thermann’s latest range of continuous flow units is the perfect option and addition to New Zealand homes, catering to your personal needs.
As Thermann’s gas continuous flow water heaters heat the water only as you need, it becomes more environmentally friendly, reducing energy usage. This also helps you save more on your electricity bills. This characteristic and its usage technology gives it a 6-star energy rating, making Thermann’s gas continuous flow water heaters one of the most energy-efficient and affordable instant hot water systems on the market.
Aside from being energy-efficient, continuous flow water heaters also occupy less space because there is no need to accompany it with hot water storage units, which are the ones used traditionally. Its compact design allows it to be mounted on your wall, saving space with a small footprint. It can also act as a standalone system or can be used with other types of renewable technology.
Temperature controllers can also be installed to these units to accurately deliver required water temperatures to your faucets.
When you choose Thermann, you will be enjoying plenty of benefits such as:
Space saver – as it can be mounted on your wall with a small footprint only.
Heat water only as needed, so you will never run out of water.
Help cut energy costs by heating water only as needed.
Controllers may be installed to achieve the accurate water temperature you need ( which also helps children and elderly users).
Available in NG or LPG.
It comes in a variety of capacities.
Like with all continuous flow hot water systems, in some instances you need to be aware that:
There may be a need to upgrade your gas pipe, which may add up to your upfront costs.
A small amount of water ( approx. 1-2 liters) is wasted upon initial delivery.
You may notice a reduction in mains pressure when when high volumes of water are used.
These are things that you must consider when choosing which of the Thermann continuous flow hot water system units you chose. Not sure? Ask us for advice!
Some factors that will play a role in what size unit you need.
How Many Bathrooms Does You Have at Home?
When turning on the hot water tap, Thermann’s continuous flow gas hot water system is immediately put into action to supply hot water. However, heavy usage can occur in your home and Thermann acknowledges that. These moments arise during the mornings, when everybody is scrambling to take a shower, hence using more than 1 at a time. This can also happen when you have guests over. When choosing a continuous flow gas hot water, it is important to keep in mind your household and select the correct size.
More bathrooms will require you to purchase and install a larger system that can deliver more, an example of this will be the Thermann 6 Star Continuous Flow at 26 ( twenty-six) Liters.
Which Thermann Continuous Flow Gas Hot Water System Is the One for You?
With homes having 1 or 2 bathrooms only, the Thermann 6 Star Continuous Flow at 16 liters or at 20 liters is suitable but you can always get a larger model to have more capacity in future, checking the price differnce is sometimes worth it. If you have 2-3 bathrooms in your household, a larger continuous flow hot water system will come in handy, such as the Thermann 6 Star Continuous Flow at 26 Liters.
Homes with home spas or bathtubs are recommended to purchase the Thermann 6 Star Continuous Flow at 26 liters or Thermann C7 Continuous Flow, which is available at 26 liters (higher demand). These units can cater to the biggest amount of water for your needs.
Installing your unit closer to the hot water tap/outlet to be used will be efficient in transporting the heated water to the fixture you are using, limiting the time it needs to travel from the source.
Other Accessories Needed
Installing Thermann Continuous Flow Hot Water Systems in enclosures will help protect the unit. Universal Continuous Flow Controllers are also available to control the temperature of the water to what you want.
Please speak to your Gasfitter or Hot Water Cylinders NZ about fluing options.
This unit from Thermann is the Thermann 26L Continuous Flow LPG Water Heater. Like many of the units from Thermann, it is compact; thus, saves space and is quite easy to install. It delivers 26 L/min at 25°C rise and 16.25 L/min at 40°C rise. The energy rating in unit with 50°C is at 6.1, while those at 60°C is at 6.0, making these units extremely energy efficient. This unit is capable of servicing 2-3 (two to three) bathrooms in a household. It is also available for Natural Gas users.
Here Are the Thermann 26L Continuous Flow LPG Water Heater Features:
Continuous flow technology
Compact and efficient design
6 ( six) star energy rating
Providing New Zealand homes with a superior technology straight from Nortiz, Japan’s leading manufacturer of household water heaters
Never run out of water
Made in Japan
Electronic ignition means no standby pilot light
Also available in 16 ( sixteen) liter and 20 ( twenty) liter units.
Also available in Natural fuel type
It can be purchased with a temperature setting of 50°C and 60°C.
This unit is suitable for 1-3 ( one to three) bathrooms.
Installation is external.
Delivers 26 L/min at 25°C rise
50 (fifty) deg C temperature setting.
200 (two hundred) MJ/h gas consumption.
The number of people is at 4-6 (four to six).
The Thermann 26L Continuous Flow LPG Water Heater comes with a 12-year warranty on the heat exchanger, and a 3-year warranty on full parts and labor.
Other Thermann Products
A universal continuous flow controller is also available. This product helps with the control of water temperature and pressure that can serve your needs.
The Thermann C7 high-efficiency Gas Continuous Flow unit ensures reduced wasted energy by pre-heating the water using heat from the gas exhaust using less energy. Optional universal controllers ensure you always have precise control of your hot water temperature settings. The unit is available as a 26L model in both NG and LPG to suit your gas type.
Thermann also produceshot water cylinder tanks for homes of all sizes that deliver full mains pressure. These are called the Thermann Electric Hot Water Cylinders. These require low maintenance and have a long service life, full flow pressure to all outlets, can be installed both outdoors and indoors, and the steel tank features rock-hard Duro-namel vitreous enamel to maximize tank life and durability. Models that cater 25L and 50L feature dual handed v-fit plumbing connections for easier access.
Thermann hot water units are state-of-the-art and are developed across the world. There is an assurance of precision and quality in all Thermann products. Thermann sets the new standards for hot water systems in Australia and New Zealand, with the aim to provide the ultimate hot water experience. Thermann provides hot water for every household, no matter the size.
Hot water cylinders are utilised in many New Zealand homes. A series of pipes are responsible for the transport of water to your property’s plumbing. Whether you rely on public water supply or use pumps, water travelling to your property should be regulated to protect your existing fixtures and hot water system. This includes the regulation of water pressure and quality.
The video above shows just how bad a leak can be when things go wrong. This is an old pressure reducing valve on a low-pressure hot water cylinder that could no longer cope with the incoming pressure.
Why Are Pressure Reducing Valves So Important ?
In the city, most homes are supplied with a public water main feed. This feed is not pressure regulated, nor is it guaranteed to supply debris free water. This ultimately means that you need to take measures to protect your fixtures and hot water system from the incoming quality and pressure of your public water supply.
How Does a Pressure Limiting (Reducing) Valve Work? This Diagram of an Ajax type pressure reducing valve nicely explains what happens to incoming pressure.
Hot Water Systems
If you have low pressure you will most likely know that there is potential for more pressure. Knowing this, it becomes pretty obvious that there is a device which limits the incoming pressure. This device is a pressure reducing valve and is rated in meters. A common rating is 7.5 meters which in other words means that the pressure is regulated to 7.5 meters of atmospheric pressure.
Those of us that enjoy mains pressure are less concerned about regulating pressure, we may believe that the more pressure the better or that it does not need to be regulated, but is that entirely true?
Appliance and Fixture Ratings
Your hot water system, your appliances, your taps and even your toilets are all pressure rated and should be regulated. This means that they will only cope with a certain amount of pressure before there is potential for failure. This may include a scenario such as in the above video where there is a high risk for flooding when failure happens.
Please ask Hot Water Cylinders NZ if you are unsure about how to rate any of your plumbing related fixtures and hot water system.
Where Do I Install the Pressure Reducing Valve?
Pressure reducing or limiting valves will protect your home and everything connected to your plumbing within. So it makes sense to install this valve as upstream as possible within the plumbing system. Typically this would be directly after the water meter on your public supply.
Often, with low pressure systems this is not desirable at all because one may still want to enjoy “mains pressure” on the cold but continue to accommodate the low pressure hot water cylinder on the hot side in which case the low pressure reducing valve will only be installed on the cold water inlet of the hot water cylinder. These systems are well known as “unbalanced hot water systems”. Another issue with low pressure valves is that they are large and “bulky” making it difficult to install within a meter box where they are prone to damage and sensitive to pressure fluctuation.
Every home should be protected from the effects of incoming pressure which can majorly increase without notice.
If you need advice or are unsure about which valve suits your circumstances best, give us a ring and we can help. Hot Water Cylinders NZ also offer valve replacement and repairs.
Here a list of valves which we may recommend.
RMC has a variety of pressure reducing valves that cater to your needs. Not only do they have pressure-relieving valves, but they also have a variety of products that go with, or have more features that will make it multifunctional.
The Filling-Group type 2128 is designed to automatically fill and refill central heating installations. The Filling-Group is permanently connected to the heating installation. The connection to the potable water system is made with a hose. When the supply pressure falls below the pressure of the heating installation during the filling operation, the water goes into the potable water system.
RMC’s Pressure and Temperature Relief (P & T Relief) Valvesare safety controls that ensure that the temperature of the water in a pressurized unvented water heater cannot exceed 99° C in the event that the normal thermostatic controls fail.
These valves may be used to guard against over temperatureand over-pressure hazards wherever water is stored in unvented containers. This is a requirement ofAustralian Standard AS 3500-4. RMC P & T Relief Valves are available in 15 mm and 20 mm configurations.
The RMC Pressure Reducing Valve is used in water systems to limit the downstream pressure to the pre-set maximum. It compensates for fluctuating upstream pressure to maintain constant maximum outlet pressure.
This is suitable for demanding commercial and industrial applications and multi-unit dwellings and can be used to reduce pressure upstream of commercial and industrial devices such as dosing apparatuses, high-pressure cleaners, and laboratory equipment.
The RMC Pressure Reducing Valve can deliver high flow rates with minimal head loss. This is available in 15 mm, 20 mm, 25 mm, 32 mm, 40 mm, and 50 mm configurations with female BSP thread connections.
A range of economy domestic/light commercial quality pressure reducing valves, suitable for various applications at temperatures up to 40°C (60°C for 1 hour max.) The valves are designed for a low-pressure drop, so minimizing noise levels.
The pressure-balanced diaphragm construction and drop-tight design also ensure constant outlet pressure is maintained across all flow rates and no-flow conditions.
All models feature cartridge construction, fully serviceable strainer and female BSP connections for ease of installation and maintenance and are suitable for use with warm water, fuel oil, compressed air, neutral gases and neutral non-sticking liquids.
Why Choose Hot Water Cylinders NZ?
Here atHot Water Cylinders NZ, we give you the best quality service and the assurance of world-class products and customer service. We not only provide pressure controllers, but also main pressure cylinders, low-pressure cylinders, gas water heating, and many more. We aim to serve you because you are our priority. That is the type of service you can get with New Zealand’s #1 hot water heating and plumbing specialist.