BiS Valves is an internationally recognised company with over 50 years experience in the design and manufacture of a wide range of small bore stainless steel pressure and flow control valves for high pressure liquid and gas. Products include check valve, safety relief valves, pressure relief valves, Solenoid valves, Stop & Metering valves, 3 & 4 Ported Directional Control valves, Check & Shuttle valves, Pilot Operated Check valves, Relief valves, Excess Flow valves, Filters, Pressure Sensing val