Isolating valves and drain points

[OffshoreGas]

Sorry, but the only thing I see about “should” is, it should be fitted with an inlet valve capable of shutting off the flow at a set level, eg a float operated valve (ballcock/ballvalve for the old school generation ).

Sorry, page 2 of the same document from WRAS. I completely agree the gov.uk site is the authoritative but I’d saved this guide when looking at this in the past.

I fit valves everywhere I think one could be of use but so far I’ve not been doing this for profit.

 

[Burger]

Ah I see it clearly now, and see how you would think that is correct,as you say,a reputable source? what they could also mean is that service valves are needed, but adjacent to the valve? Or am I giving them the benefit of the doubt?