Just lost patience with the HB valve fitted to the cap of my King Kegs. I had leaks from the “pressure relief valve”, aka rubber band, in the past so replaced with a proper valve. Now, half way through a barrel I’ve lost pressure and traced it to the no—return valve, aka another rubber band, under the cap. Yes, it was fitted with a cable tie to stop it flying off. So now I’m thinking of doing away with the HB valve except for the end that attaches to the S30 Brewgas cylinder. I plan to make an adapter to connect the S30 to the Schrader valve I use for leak testing. I have an idea in mind but wondered if anybody on here has done this. I don’t want to go to the expense of a large cylinder and regulator etc. just now. Maybe later.