My GAS IT tank and bottle system is now installed, what about introducing LPG for the first time?

Find attached a copy of the relevant purging section from the N.C.C. CoP 306 ( National Caravans Councils ) Code of Practice 306.

Inline with N.C.C commissioning requirements we only recommend the system be commissioned with air first ( full air compressor pressure of no more than 160 psi can be used as the pressure in the tank when LPG is pumped in is around 150 psi).

When you fill with air first you can check the functionality of the system and then carry out your first leak checks from the fill point to the appliances. Once you have completed the air test and you have totally removed all the air you pumped in from the tank ( by releasing an end of the pigtail and opening the outlet on the tank ) you can then close the outlet and introduce LPG vapour ( not liquid ) to carry out further leak checks and then run the complete Gas system and appliances.

When your completely satisfied there are no leaks and functionality of the tank or bottle, only then initial put the minimum amount of Liquid LPG ( no more than 2 ltrs ) in the system until the system is fully tested for functionality and leaks once again.  This is so should you find any problems you do not have to empty and waste a full tank of gas.


We always recommend that you check to make sure that any pressurised air that might have been left in the bottle or tank when assembling the tank and testing it for leaks, is fully removed from the bottle or tank before attempting to fill. This is done simply before you attempt to fill the tank or bottle by opening the outlet tap before a pigtail or regulator is connected to so that any compressed air pressure will simply fall away to nothing more than atmospheric pressure.

Once any pressurised air is removed then simply close the tap and refit any hoses or regulators that need to be fitted.

Now follow the N.C.C.'s Guidelines on introducing LPG for the first time to your GAS It tank or bottle.


We always recommend a GAS IT gas tank or gas bottles LPG qualified engineer carries out all testing and servicing of GAS IT products.