thermostatic mixing valve

I have a shower-only Grohe valve and showerhead. From searching, I believe the handle that controls the temperature is a "Grohmix," and I'm having an issue where only hot water comes through now. This is in a guest bedroom, so we rarely use it, but it was operating fine for the last couple of...

We have a well that goes to 2 (parallel) bladder pressure tanks and then to a water treatment system (2 neutralizers in parallel) and then a softener. So: Well-->pressure tanks-->neutralizers->softener--> water heater. There are no check valves after the pressure tanks. A few years ago we...

Hi all, I'm trying to troubleshoot a thermostatic mixing valve that's installed directly at the domestic hot water heater outlet, but which is not giving the desired temp. This is the first time we've installed these valves along with a thermal expansion tank as part of the same install, and...

Hi shower heads: I'm renovating my main bathroom and trying to figure out the best shower valve to get. I've read up on pressure balance and thermostatic and still not quite sure which I really need. My situation is this: I own a two-family house, renting out the other unit to a tenant...

I have a heat pump water heater with a thermostatic mixing valve, expansion tank, vacuum breaker valve and a recirculating pump. My system does not have a dedicated return line so APCOM BPV Aqua-Flash Bypass Pressure Relief Valves are installed at sinks at the end of each circuit. Placement of...

I have a GS faucets (Italian company) thermostatic kitchen faucet, which I think is no longer in production, although you can see the shower thermostatic cartridge it uses at the link. It looks a lot like this Chinese knock-off, maybe that's why it isn't sold by GS anymore. It's all brass and...

I need help with a hot water heater system in a new construction. We are going with a 50 gallon heat pump water heater with a tank booster and a recirculating pump. The plumbing company is putting in the return hot water lines for the pump but expects me to provide the water heater, pump, and...

I'm installing an AO Smith HPTU-80N hybrid hot water heater and am looking at the pros and cons of adding a thermostatic mixing valve. I see it's recommended for other types of installations, but is there anything that makes using it with a hybrid different? Also, if I understand correctly, the...

With a Thermostatic mixing valve; is the cold valve completely shut off until the hot water becomes too hot? I've had a Grohe Thermostatic mixing valve in my shower for years and I love it. However I always question if I"m wasting water (cold side) while I'm waiting for the hot water to...