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Member postings for geoffrey yarham

Here is a list of all the postings geoffrey yarham has made in our forums. Click on a thread name to jump to the thread.

Thread: Making Simple Model Steam Engines
12/02/2009 09:03:58
no one
Thread: Boiler certificate
10/02/2009 15:59:09
Bill, Bar-Litres. This is the total volume of the boiler (in litres) multiplied by working pressure (in bars. 1bar = 14.5lbpsi) This should be on the test certificate. Boilers below 1.5 bar-litres only have to be tested once. So if you have the original Chedder cert; the boiler is more than likely to be under 1.5 B-L.  But I would say always test a second hand boiler as you dont know how it has been used.  Geoff 
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