powers hydroguard mixing valve - powers shower cartridge

 2024-09-19 19:39:08

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Water pressure changes. It’s the nature of the system. So unless the water pressure is constantly at a higher psi, we don’t recommend installing the valve.

There’s also a lot of information in the other blog posts that might help you understand better what’s going on with your home’s system.

For sellers, I recommend not agreeing to install the valve and to just give the buyer the money so they can have it in case they decide to sell in the future or install it themselves.

Our stance: If a home that is 10, 15, or 20+ years old didn’t need the valve before, why is it suddenly a problem? There haven’t been any part failures or flooding because of the water pressure so it’s extremely unlikely the valve is now a necessity. Of course, there are always exceptions but for the majority of the cases, the valve is unnecessary.

Not to mention there is no industry standard when it comes to where the valve is installed. Usually it’s installed in one of two places, buried in the ground on the main water line either near the area the water line goes into your home or at the water meter. But again, because there is no standard, the valve can be anywhere buried under the ground on the line.

Hot and coldwater mixing valve

If you have a standard electric or gas tank, there are a number of things we can do to increase the amount of deliverable hot water from the simple to the complex. One of the ways to do that would be to simply increase the set-point of the thermostat so that the water stored in the tank would be hotter and would therefore go farther. For example, let’s say you crank the temperature in your tank up from 120° to 140°. It would certainly give you more deliverable hot water, but let’s take a closer look at what happens when you do that.

CommercialMixing Valve

And home inspectors are going to continue to recommend the valves. Like I said, it’s a liability issue because of the current codes. So my recommendation for buyers and sellers is this.

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1. The higher the temperature of the water in the tank, the faster the rate of corrosion of the tank itself. This equates to:

BradleyMixing Valve

One downside is that they typically fail gradually and, in doing so, tend to allow more hot water through them. Because this is gradual, the end user might not recognize the change and could be subjecting themselves to hotter-than-safe water temperatures. So, make sure to watch for that and test the water temperature periodically.

3. The higher temperature of the water in the tank, the higher the probability of someone getting burned. The time it takes to acquire a serious burn is:

In the last five to 10 years, we started getting calls from customers asking about pressure reducing valves. What wasn’t an issue before suddenly not only became an issue but is also getting worse with each passing year.

And two, all the manufacturers test their fixtures from 150 to 200 psi. Meaning, these devices — faucets, toilets, water heaters, etc. — are made to handle a psi from 150 to 200, and homeowners are being made to worry about 80 psi.

Watertemperingvalve

Thermostaticmixing valve

We went out to a house once where the valve had failed and there was very little water pressure in the house. It wasn’t at either one of the two place I mentioned and nobody knew where it was buried along the line.

It costs about $1,000 to $1,500 to have the valve installed. For buyers I recommend not having it installed but to get the money from the seller for the valve installation. Then put it in the bank or be prepared to give that amount to the next buyer if they insist on having the valve installed or getting the money to do it themselves.

We learned two things. One, most of the manufacturers had no idea what we were even talking about when we asked about the the pressure reducing valve. So how can these valves be that important if the manufacturers have never even heard of it?

The valve is a mechanical part. And anything mechanical can and will fail. When the valve fails, the water pressure in your home will be next to nothing or extremely high. So you paid to have this unnecessary part installed and now you have to pay to have it fixed and deal with poor water pressure until you do.

ThermostaticMixing valvefor eyewash station

A pressure reducing valve is exactly what it sounds like, a valve that reduces the water pressure in your home. And water pressure, as you probably already know, is the force with which water flows through your pipes and out of different fixtures like faucets, toilets, and water heaters. High pressure is strong and low is weak.

However, there are also times when a plumber comes out to do any kind of work, like a leaky faucet, and independently decides to run a pressure check. If the pressure is 80 psi or higher, he goes to the homeowner and recommends having the valve installed (which he, of course, is happy to do).

And as always, if you have any questions regarding this valve or any other underslab plumbing issues or anything you read on our site, we are happy to speak with you.

There are a lot of dishonest companies looking out for their own best interest. It is important to us here at In-House to always be transparent and to tell everyone the truth about the industry. If you think you might be getting scammed by another plumbing company or aren’t sure if they know what they’re talking about, give us a call.

Unscrupulous plumbers looking for an easy way to make more money are going to continue to use scare tactics to convince homeowners they need this valve.

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Residential water pressure typically falls within the 45 to 80 psi (pounds per square inch) range. Anything higher than 80 psi is considered high pressure and that is what we will be discussing.

In these cases, typically the home inspector for a buyer comes in and does a pressure check. If it’s higher than 80 psi, the inspector recommends the buyer get the valve.

As for this last point, we can help safeguard against potentially hazardous conditions simply by installing a mixing valve. A mixing valve is a mechanical device that mixes cold water with hot water to deliver mixed, or tempered, water downstream (think of your shower valve). These devices can be put directly onto the water heater outlet so that the tempered water gets delivered everywhere. As another option, individual mixing valves can be installed at certain points of use to ensure that the tempered water is delivered to that specific location. Taking a look specifically at the mixing valves that install at the water heater outlet, they are relatively easy to install, adjustable and fairly inexpensive.

Because we’re getting more questions about the valve, I thought it would be helpful for everyone to write a blog post about whether or not you need to install a pressure reducing valve.

The water heater thermostat is turned up to 140°, thus providing a tank full of 140° water. Then as water is drawn out, the mixing valve mixes cold water with that very hot water to deliver whatever temperature the homeowner chooses as their set point, which is usually 120°. This process gives the homeowner more deliverable hot water because it takes less of the stored water to produce it. They do require maintenance (cleaning) to keep them working properly. The normal lifespan for these devices is 5-6 years.

Of course, I’m not saying you should never worry about your water pressure being too high period. But here at In-House Plumbing Company, we do believe it’s a very rare situation where it’s necessary. And if you think you might be one of those rare cases, we are happy to talk about it with you.

All in all, increasing the set-point temperature and adding a mixing valve is not a bad option for someone that’s looking to get more hot water from their tank-type water heater (without going to a larger tank or using more expensive technology).

EyewashMixing Valverequirements

One more important thing to note, the water pressure in any neighborhood can fluctuate. You can see 100 psi at one point and then 80 at another. One system in the neighborhood can show 150 psi and another show 75.

But we didn’t stop there. My master plumber, Bill Hoyle, and I went to a trade show a few years ago to talk to plumbing fixture manufacturers. We wanted to know if this was an issue we weren’t understanding, and if so, should we change our stance on it?

Low flowMixing Valve

For the home inspector, this is an issue of liability. The city code for new home construction states the psi cannot be higher than 80. So any new home will have one of these valves installed. So the home inspector will always recommend getting the valve installed in any home, new or old, with a psi of 80 or higher.

Mike Henry is one of Rheem’s technical trainers for plumbers. He’s a third-generation plumber who managed his own business for many years and enjoyed working in the field. He maintains Master Plumber licenses in Georgia and Florida.

However, for the plumber, it’s just another revenue stream. He can easily show the homeowner the code and say that if this valve is not installed, there’s a risk of damage to the plumbing fixtures and even flooding.

That is the question we started getting and are getting more and more often. And it’s usually from someone involved in a the sale of a house.