Adj. Back Pressure & Anti-Siphon valves

BPR-1-PVDF-N BP/PR VALVE, PVDF/PTFE, 1"" NPT Walchem Metering Pump Repair Part This valve features a construction using PVDF (polyvinylidene fluoride) for the valve body and PTFE (polytetrafluoroethylene) for the sealing elements. This material...

BPR-1-PVC-UE BP/PR VALVE, PVC/EDPM/PTFE, 1"" UNION (NPT/SOC) Walchem Metering Pump Repair Part Featuring a construction of PVC (polyvinyl chloride) for the valve body and a combination of EPDM (ethylene propylene diene monomer) and PTFE...

BPR-1-PVC-U BP/PR VALVE, PVC/FKM/PTFE, 1"" UNION (NPT/SOC) Walchem Metering Pump Repair Part Crafted with a PVC (polyvinyl chloride) valve body and a combination of FKM (fluoroelastomer) and PTFE (polytetrafluoroethylene) for sealing elements, this...

BPR-1-PVC-N BP/PR VALVE, PVC/PTFE, 1" NPT Walchem Metering Pump Repair Part With a PVC (polyvinyl chloride) valve body and PTFE (polytetrafluoroethylene) sealing elements, this valve is crafted for optimal corrosion resistance and compatibility with...

BPR-7-SS-N BP/PR VALVE, SS/PTFE, 3/4" NPT Walchem Metering Pump Repair Part This precision-engineered valve features a stainless steel (SS) valve body and PTFE (polytetrafluoroethylene) sealing elements, providing excellent corrosion resistance and...

BPR-7-PVDF-N BP/PR VALVE, PVDF/PTFE, 3/4" NPT Walchem Metering Pump Repair Part Featuring a construction of PVDF (polyvinylidene fluoride) for the valve body and PTFE (polytetrafluoroethylene) for sealing elements, this valve provides exceptional...

BPR-7-PVC-UE BP/PR VALVE, PVC/EDPM/PTFE, 3/4" UNION (NPT/SOC) Walchem Metering Pump Repair Part With a PVC (polyvinyl chloride) valve body and a combination of EPDM (ethylene propylene diene monomer) and PTFE (polytetrafluoroethylene) for sealing...

BPR-7-PVC-U BP/PR VALVE, PVC/FKM/PTFE, 3/4" UNION (NPT/SOC) Walchem Metering Pump Repair Part Crafted with a PVC (polyvinyl chloride) valve body and a combination of FKM (fluoroelastomer) and PTFE (polytetrafluoroethylene) for sealing elements, this...

BPR-7-PVC-N BP/PR VALVE, PVC/PTFE, 3/4" NPT Walchem Metering Pump Repair Part With a PVC (polyvinyl chloride) valve body and PTFE (polytetrafluoroethylene) sealing elements, this valve ensures robust corrosion resistance and compatibility with various...

BPR-5-SS-N BP/PR VALVE, SS/PTFE, 1/2" NPT Walchem Metering Pump Repair Part With a stainless steel (SS) valve body and PTFE (polytetrafluoroethylene) sealing elements, this valve ensures excellent corrosion resistance and compatibility with various...

BPR-5-PVDF-N BP/PR VALVE, PVDF/PTFE, 1/2" NPT Walchem Metering Pump Repair Part With a construction featuring PVDF (polyvinylidene fluoride) for the valve body and PTFE (polytetrafluoroethylene) for the sealing elements, this valve provides exceptional...

BPR-5-PVDF-F BP/PR VALVE, PVDF/PTFE, 1/2" FLANGED Walchem Metering Pump Repair Part Featuring a construction with PVDF (polyvinylidene fluoride) for the valve body and PTFE (polytetrafluoroethylene) for the sealing elements, this valve ensures...

BPR-5-PVC-UV-M BP/PR VALVE, PVC/FKM/FKM, 1/2"UNION, MED PRESS Walchem Metering Pump Repair Part Crafted with a PVC (polyvinyl chloride) valve body and featuring FKM (fluoroelastomer) sealing elements, this precision-engineered valve ensures robust...

BPR-5-PVC-UE-M BP/PR VALVE, PVC/EPDM/EPDM, 1/2"UNION, MED PRESS Walchem Metering Pump Repair Part With a PVC (polyvinyl chloride) valve body and EPDM (ethylene propylene diene monomer) sealing elements, this precision-engineered valve offers robust...

BPR-5-PVC-UE BP/PR VALVE, PVC/EDPM/PTFE, 1/2" UNION (NPT/SOC) Walchem Metering Pump Repair Part With a PVC (polyvinyl chloride) valve body and a combination of EPDM (ethylene propylene diene monomer) and PTFE (polytetrafluoroethylene) for sealing...

BPR-5-PVC-U BP/PR VALVE, PVC/FKM/PTFE, 1/2" UNION (NPT/SOC) Walchem Metering Pump Repair Part Crafted with a PVC (polyvinyl chloride) valve body and a combination of FKM (fluoroelastomer) and PTFE (polytetrafluoroethylene) for sealing elements, this...

BPR-5-PVC-NP BP/PR VALVE, PVC/PTFE, 1/2" NPT, 1/4"NPT PORT Walchem Metering Pump Repair Part Crafted with a PVC (polyvinyl chloride) valve body and PTFE (polytetrafluoroethylene) sealing elements, this valve ensures robust corrosion resistance and...

BPR-5-PVC-N-BV BP/PR VALVE, PVC/PTFE, 1/2" NPT, 1/4"NPT & VALVE Walchem Metering Pump Repair Part Crafted with a PVC (polyvinyl chloride) valve body and PTFE (polytetrafluoroethylene) sealing elements, this valve ensures robust corrosion resistance...

Anti-Syphon/Back Pressure Valves   Walchem Back Pressure / Anti-Siphon valves provide stability and safety to your metering pump installations.  All metering pump require back pressure to operate correctly and often installations do...

BPR-5-PP-UE BP/PR VALVE, PP/EDPM, 1/2" NPT UNION Walchem Metering Pump Repair Part Constructed with a polypropylene (PP) valve body and featuring EPDM (ethylene propylene diene monomer) for sealing elements, this valve ensures robust corrosion...