Hi all
My brand nee Hydrotech 12l 300 bar bottle had a leaky bleed valve. Wouldn’t fill a cylinder, air just escaped out of the bleed valve.
Retailer replaced it, and the replacement suffers the same issue. Internet sale, not easy to return

And, yes I’m tightening the valve.

Asking for a refund, hitting a brick wall. Retailer tells me it’s impossible there are two faulty. Manufactured to the highest possible standards

Would a Best Fittings push button bleed valve sort it?

I’m pleased I’m not diving with it.

Advice gratefully received, thanks