Liam313
New Member
Hello,
I have a Kohler single-handle universal valve (K8304-K-NA) installed on a recent renovation. It was working properly when installed, but after several months no hot water flows when turned on (gradually got worse). I am trying to troubleshoot what the source of the problem is and what potential solution could be implemented.
I have a Kohler single-handle universal valve (K8304-K-NA) installed on a recent renovation. It was working properly when installed, but after several months no hot water flows when turned on (gradually got worse). I am trying to troubleshoot what the source of the problem is and what potential solution could be implemented.
- I have tried two replacements of the same model (one from local seller, one from Kohler) and the problem persists. When the cartridge isn't installed hot water flows fine. When installed no hot water.
- Testing the hot and cold psi in the sink next to the tub, both are at 35psi. I installed a pressure regulator on the hot water line and it also shows 35psi
- Recommended psi for this model is 45psi but has a range of 20-125psi, with no difference between hot and cold greater than 5psi
- The hot water does not flow regardless of using tub filler vs. shower head. The water heater is an electric on demand water heater.