Hi what the supply of gas from the street to the meter in mbar? And what's the difference between a e6 gas meter and a G4 gas meter apart from the tightness test drop?
E6 ...8 mbar drop
G4 .... 4 mbar drop
Hi there I'm an apprentice and I was do a working pressure on a 'Baxi plat 40 he a' and its started on 24mbar it dropped correctly but when turn the hot tap off it went back up to 27mbar. Why is this?