Pump threads

[GraemeJudge85]

Does any one know what size the threads are for the fittings in the bottom of the pump for the suction and return pipe please
Thanks
Graeme

[milford59]

Sorry , I don’t know the answer, but if you give Will a call at the factory, I am certain he will know - he is very helpful.

[T140]

Did you contact STW for the answer?

I just bought a new die and tap set for the 3/8" fittings on the Burrell, thats to the Clacks, unions, tank fittings etc and they are 9/16" x 26 BSB (British Standard Brass) I haven't tried it on the pump threads but being 3/8" pipe I suspect 9/16".

I am also adding a third method of filling the boiler, via John Rex Engineering, a 3/8" piped hand ram pump, tee and two non return valves. Bolted to the footplate via a tank filter to the mechanical pump outlet pipe. All those threads are also 9/16" x 26.

Hopefully that answers your question?

Richard.

[GraemeJudge85]

Hi thanks for the replys no I have not concated them yet a few days after asking I had my Mrs BMW timing chain go so have been rebuilding that so fun steam engine bits had to wait as its all done now and back running I can start playing again
Graeme

[GraemeJudge85]

Hi just thought I'd ask the question again if any one knows the thread sizes in bottom of pump for suction and return threads are looking like they need a retaping so want to make sure I am buying the correct ones
Graeme

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