Tried to perform an air pressure test to building regs part H 2.60 using kit from BES. Their part 1960 Drain Pressure test plugs are inserted in each end and the wing nut tightened.
Pressure is applied - and the test plug eventually flies out one end or the other.
Obviously I need to tighten the plug further but am worried about tightening it too much and fracturing the pipe. Is there a technique here I need to know ?
Thanks
M