The Gas train is a series of Components that safely feed the Propane or Natural Gas into the burner

Gas trains are completely assembled with various components and factory tested for proper working. They mainly consist of the following:

(1)  Main Isolating valve at inlet.

(2)  Gas filter for filtering.

(3)  Slam Shut off valve, to protect components provided after the gas regulator from high pressure in case of gas regulator failure.

(4)  Gas regulator: To provide a constant predetermined pressure at burner inlet.

(5)  Gas safety relief valve: To release surges in gas pressure at the time of starting the system.

(6)  Gas pressure switch: To cut off the burner in case of low pressure.

(7)  Safety and Main Solenoid Valves: Two numbers valves are provided in series as a safety against gas leakage in the system during shutdown period. These valves can be direct operating solenoid valves or butterfly valves with pneumatic actuators depending on the quantity of gas to be handled.

(8)  Pilot Gas Train: This consists of isolating valve, pilot regulator and solenoid valve for generating pilot flame which will ignite the main flame.

(9)  Pressure gauges at the inlet, after the regulator and at burner inlet are provided with isolating valves. Low pressure gauges are provided with block and bleed valves. These valves keep low pressure guages isolated most of the time. In addition to the above,  valve proving system (VPS) can be provided for safety against gas valve leakage.