Profile: Groquip manufactures pressure vacuum vents, flame arrestors and blanket gas regulators. Our products include tank car discs, explosion panels, pilot valves, test stands, gas sampling systems, pilot operated valves, blanket gas regulators and diverter port valves. We offer oil & gas offshore and inland field services for block valves, relief valves & tank vents. We provide welding, oxygen cleaning and in-line test of boiler safety valves. We repair and test a complete line of target rock control valves. We also remanufacture rotating disc valves.