Needle Valves | The Forge Fire | Forum

i get stuff like from granger or mcmaster-carr. both can be reached on line

J Wilson;16504 wrote: Water, Oil, Gas. They are approved for gases other than inert. I've been using hardwaare sourced 1'4 in. WOG rated ball valves on all of my forges for about 15 years without difficulty. Your results may differ.
Jeff

I agree, any valve will work which is rated 125# wog water,oil,gas... any gas .. however,a needle valve is designed for and will throttle. gate valves and ball valves are intended to shut off or be on.A globe valve is also intended to throttle and serves the purpose well. Also available are valves rated W S P...and are intended to shut off ,turn on , and regulate steam pressure. These valves are designed for use at high temerature..at least..steam at the appropiate pressure. For gas forge purposes ,a valve rated 125# is sufficiant...we dont operate over 30 psi.. However,if a regulater would fail,the system is subject to bottle pressure which could rapidly climb to 300 psi. Build a safe system for yourself.I tend to overbuild allowing a safety factor of at least 2.I chose HOKE stainless steel 1/4 " needle valves rated 500 psi W O G .The seats and seals of these valves is intended for high velosity flow of gas in a throttled position. Look around , you will find these valves surplus or at the junk yard .Also be safe and use the proper fuel rated hose . Dont skimp on safetyA.ny welding supply house or plumbing wholesaleran supply these valves.