Shiv shakti impex offers solenoid valves, gas and petrol. Gas solenoid is used as on/off valve that filters the lpg impurities [i.E. Magnetic and duet]. Life of the filter is 50,000 km. The valve cuts off the flow if there is any leakage of lpg. Petrol solenoid: normally in open condition allows flow of petrol when/vehicle runs on petrol, shuts off when vehicle runs on lpg, manually shut off.