Adam G
New Member
Because of a miscommunication, I ended up with a 3/4 inch Kohler Master Shower Thermostatic shower valve instead of a 1/2 inch. The plumber has run 1/2 inch pipes in the wall. He said there is no reason to return it and wait for the shipping of the new one as it will make no difference and in fact could result in a slight increase in GPM and no loss in pressure. Does this sound right to everyone? Is there any issue with using a 3/4 inch valve with 1/2 inch pipes?