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Where do i buy the safety valve for my Polly engine ?

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Chris machin	31/01/2012 08:37:19
59 forum posts	Hi All , where's the cheapest place to buy the safety valve for Tubal Cains 'Polly' engine and also the steam pipe and fittings e.t.c. The plan i have says the safety valve needs to be one that blows off at 20lb per sq inch . I know it can be made but i'd rather buy one. Thanks Chris.
JasonB	31/01/2012 10:13:38
25215 forum posts 3105 photos 1 articles	Bruce (polly engineering), Blackgates, Reeves, GLR, EKP, Steam Fittings all sell fittings & valves but prices are liekly to be similar from them all. J
Springbok	31/01/2012 14:41:52
879 forum posts 34 photos	Why not have the fun makeing them they are quite simple to make. just make sure the springs are correct type. Bob
Bill Starling	31/01/2012 20:10:03
102 forum posts 7 photos	Dear Chris, If you don't want to make a safety valve, SMEE suggest buying a Mamod one. (www.mamod.co.uk). The crucial thing is to check what thread you need before making the bush the valve screws into - 1/4 BSF (26 tpi) in the case of Mamod. However, as Bob says, it's fun to make your own - including the spring. You can hand wind this from 0.5 mm bronze wire using a piece if 1/16 ins rod as a former. Good luck, Bill.

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