Back to basics help

TonyW · Post by **TonyW** » Sat Jan 04, 2014 4:02 pm

williamfj:94875 wrote:According to Tag Gorton pop safety valves of a suitable size are available from Polly Engineering.

I put the link to their catalogue above.

williamfj · Post by **williamfj** » Sat Jan 04, 2014 4:33 pm

Whoops, brain out of gear again.

GTB · Post by **GTB** » Sun Jan 05, 2014 8:39 am

Roundhouse safety valves have a 5/16 x 40 ME thread, which isn't listed. So you would need to talk to Polly Engineering about a special order, otherwise you would need to make an adaptor.

Same with Accucraft, who use metric threads.

Graeme

bazzer42 · Post by **bazzer42** » Sun Jan 05, 2014 8:53 am

Having read the Polly catalogue, page 42 only, I wasn't convinced that you had to calibrate or set it yourself. That has put me off popping. I do need to invest some time in bench running. At 15 years old (Lady Anne not me) I may invest in a new steam valve from RH, at the price it won't break the bank. I also have a gremlin lever coming that I want to experiment with. Still lots to learn, fun though.

Thanks for all the posts so far, I've learnt more in 3 days than in my first 12 months of playing on my own.

The attenuator suggested by Jez, has anybody tried that?

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