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dave bushell

Hi Roger and efr215
The petrol tap threads that you mention are correct. The inlet side is 1/8 bsp but I’m not sure about the outlet thread type. I have a EWARTS petrol tap in my box which has a 11mm dia outlet and the thread pitch is 19 tpi. This hasn’t been turned down and re-threaded. I also have an identical pattern EWARTS tap that has a 1/4 bsp outlet.
Both these taps are the push/pull type with barrel corks and not the type with flat corks.