What is a gas transporter 1 test (GT1 test)?


If you need a gas installation but no longer have a meter attached, a GT1 Test is needed to find out about your business gas supply before a new gas meter is attached. An engineer usually visits your site, but it can sometimes be done remotely. The process usually takes around a week, but can take between two working days and two weeks (or sometimes longer). The results will give you the capacity of the gas pipe in kilowatts (kW), the pressure (low pressure (LP), medium pressure (MP), intermediate pressure (IP), and high pressure (HP)), a live-dead test, the size and type of Emergency Control Valve (ECV) in inches or millimetres (mm) and screwed or threaded valve connection type.