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G6Tanuki · 3rd Dec 2021, 4:02 pm

I've never come across a valve with that little nub before. I guess it's to make 'blind' insertion into the base a bit easier by helping you know where oin 1 is.

3rd Dec 2021, 4:02 pm	#6
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,998	Re: ID this valve. I've never come across a valve with that little nub before. I guess it's to make 'blind' insertion into the base a bit easier by helping you know where oin 1 is. __________________ I'm the Operator of my Pocket Calculator. -Kraftwerk.