The valve shall be drained to the exterior terminate toward the ground maintaining between 6 and 24 of clearance from the ground and point downward.
Water heater pressure relief valve discharge pipe code california.
Which reads as follows.
No part of such drain pipe shall be trapped or subject to freezing.
Pressure temperature relief valve cpc 504 4 504 5 and 608 5 all water heaters have a pressure temperature p t relief valve that is galvanized steel hard drawn copper or cpvc.
All safety relief valves required by this order shall be asme rated and stamped.
Its proper functioning is the difference between a nice hot shower and an explosion.
Asme code paragraphs u 68 and u 69 tanks shall have safety valve capacity sufficient to prevent pressure in the tank from exceeding 135 percent of the allowable working pressure of the tank.
Relief valve drains shall not terminate in a building s crawl space.
2015 upc chapter 6 water supply and distribution page 105 section 608 5 discharge piping.
The california water heater code is part of a larger statewide california plumbing code and has several very specific restrictions.
Unlike the expansion tank which is intended to protect the piping system from pressure the tprv protects the water heater tank from experiencing.
Not be smaller than the diameter of the outlet of the valve served and shall discharge full size to the air gap.
I always use the 18 rule with copper pipe before transitioning to pex pipe.
The terminal end of the drain pipe shall not be threaded 2010 cpc 608 5 discharge from a relief valve into a water heater pan shall be prohibited.
At a minimum any water heater shall be secured in accordance with the california plumbing code or modifications made thereto by a city county or city and county pursuant to section 17958 5.
The discharge piping serving a pressure relief valve temperature relief valve or combination valve shall.
T p valve the temperature and pressure relief valve is an important safety device which goes off when your tank exceeds 210.
Surface area flow rate surface area flow rate surface area flow rate.
March s featured code change.
The discharge piping serving a temperature relief valve pressure relief valve or combination of both shall have no valves obstructions or means of isolation and be provided with the following.
Discharge through an air gap located in the same room as the water heater.
8 termination of the tpr drain pipe cannot be more than 6 inches or less than two pipe diameters above the floor ground or waster receptor.
