HD system valves and accessories range of products consist of OS&Y gate valves, butterfly valves, swing check valves, Y-type strainers, and pressure gauges. Being authorized distributor of Potter products, we keep a wide range of Potter products such as flow switches, pressure switches and supervisory switches in stock. HD OS&Y gatre valves, butterfly valves, swing check valves, and pressure gauges are UL Listed and FM approved while HD Y-type strainers are UL Listed. Please refer to product catalogues for approval information, technical specifications and ordering information.