Asian Industrial Valves & Instruments manufactures Preset Type Thermal Relief Valve. Asian Industrial Valves & Instruments is an ISO 9001: 2000 certified company. The Company also manufactures various types of valves and instruments for process industries like chemical, petroleum, refineries, fertilizers, nuclear, atomic, paper, sugar, drugs and pharmaceuticals, steel, chemical and other allied industries. The Preset Type Thermal Relief Valve is used when a liquid is blocked in a pipe and these valves are available in size ranging from 1/2"-3/4".