BS EN 88-2. Safety and control devices for gas burners and gas burning appliances. Part 2. Pressure regulators for inlet pressures above 50 kPa up to and including 500 kPa and associated safety devices|Controllers, Pressure regulators, Gas flow, Flow regulators, Gas-powered devices, Safety devices, Gas valves, Valve components, 1st family gases, 2nd family gases, 3rd family gases, Leak tests, Performance, Design, Type testing, Instructions for use, Pressure, Grades (quality), Flow rates, Test pressure, Safety valves