Relief Piping

Al Letellier

Basic rules: full sized, always pitched down, never trapped or valved, max. 6" off the floor.
Found in most plumbing and mechanical codes

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Servicewiz_2

Boiler Relief Valve Discharge Piping

I am in search of code information on the piping out of boiler safety relief valves.Mainly the difference (Hydronic vs. Steam)Any info. with sources is greatly appreciated!!!!!!!!!!!!

J.C.A._3

Relief piping,

The biggest difference...Steam relief is 15 LBS. , MOST hot water relief valves are set at 30 LBS.

All should terminate "within 12" of the bottom of the boiler" meaning , discharge pipes should terminate within 12" of the floor.( If the boiler is elevated CYA. Put it within a foot of the termination.) I like to keep them as near to the floor as a small bucket will allow. Sometimes , this will keep you from a "after hours repair" for the night. Chris

Tony_8

I always

thought NY was within 4 " of the floor, and have done so "forever" Keeps that scald potential "down".