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Rolling diaphragm provides high accuracy, prevents crystallization.

Flat secondary diaphragm provides a second isolation of the control spring.

Patented Fail-Dry® safety vent gives advance warning of need to replace primary seal.

Relief setting is infinitely adjustable from 5 psi to 100 psi.

Not recommended for applications with vacuum or back pressure on the outlet.
Rolling Diaphragm Design Relief Valves
Unit of Measure
1 

Item #

Item Name

Connection Size

Connection Type

Body Material

Seal Material

RVDM050V-PV N/A 1/2 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
RVDM050EP-PV N/A 1/2 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM075V-PV N/A 3/4 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
RVDM075EP-PV N/A 3/4 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM100V-PV N/A 1 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Fluorocarbon (FKM)
RVDM100EP-PV N/A 1 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Polyvinyl Chloride (PVC) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM050V-CP N/A 1/2 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
RVDM050EP-CP N/A 1/2 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM075V-CP N/A 3/4 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
RVDM075EP-CP N/A 3/4 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM100V-CP N/A 1 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Fluorocarbon (FKM)
RVDM100EP-CP N/A 1 Inch (in) National Pipe Thread (NPT) Chlorinated Polyvinyl Chloride (CPVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Chlorinated Polyvinyl Chloride (CPVC) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM050V-PP N/A 1/2 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
RVDM050EP-PP N/A 1/2 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM075V-PP N/A 3/4 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
RVDM075EP-PP N/A 3/4 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM100V-PP N/A 1 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Fluorocarbon (FKM)
RVDM100EP-PP N/A 1 Inch (in) National Pipe Thread (NPT) Polypropylene (PP) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Polypropylene (PP) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM050V-PF N/A 1/2 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Fluorocarbon (FKM)
RVDM050EP-PF N/A 1/2 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1/2 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM075V-PF N/A 3/4 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Fluorocarbon (FKM)
RVDM075EP-PF N/A 3/4 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 3/4 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Ethylene Propylene Diene Monomer (EPDM)
RVDM100V-PF N/A 1 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Fluorocarbon (FKM)
RVDM100EP-PF N/A 1 Inch (in) National Pipe Thread (NPT) Polyvinylidene Fluoride (PVDF) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal N/A 1 in N/A National Pipe Thread (NPT) N/A Polyvinylidene Fluoride (PVDF) N/A Ethylene Propylene Diene Monomer (EPDM)
Unit of Measure
1