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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
Items Rolling Diaphragm Design Relief Valves
RVDM050V-PV
1/2 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal 		Rolling Diaphragm Design Relief Valves
RVDM050EP-PV
1/2 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal 		Rolling Diaphragm Design Relief Valves
RVDM075V-PV
3/4 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal 		Rolling Diaphragm Design Relief Valves
RVDM075EP-PV
3/4 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Ethylene Propylene Diene Monomer (EPDM) Seal 		Rolling Diaphragm Design Relief Valves
RVDM100V-PV
1 Inch (in) National Pipe Thread (NPT) Polyvinyl Chloride (PVC) Relief/Bypass/Backpressure Valve with Fluorocarbon (FKM) Seal
Description N/A 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.
Brands N/A Plast-O-Matic
Manufacturer N/A Plast-O-Matic Valves, Inc.
Connection Size N/A 1/2 in N/A 1/2 in N/A 3/4 in N/A 3/4 in N/A 1 in
Connection Type N/A National Pipe Thread (NPT)
Body Material N/A Polyvinyl Chloride (PVC)
Seal Material N/A Fluorocarbon (FKM) N/A Ethylene Propylene Diene Monomer (EPDM) N/A Fluorocarbon (FKM) N/A Ethylene Propylene Diene Monomer (EPDM) N/A Fluorocarbon (FKM)
Maximum Inlet Pressure N/A 150 psi
Package Quantity N/A 1
Case Quantity N/A 1
Shipping Length N/A 2.25 in N/A 2.25 in N/A 4 in N/A 4 in N/A 4 in
Shipping Width N/A 7.94 in N/A 7.94 in N/A 8.6 in N/A 8.6 in N/A 8.6 in
Shipping Height N/A 1.88 in N/A 1.88 in N/A 1.9 in N/A 1.9 in N/A 1.9 in
Shipping Weight N/A 0.75 lb N/A 0.75 lb N/A 1 lb N/A 1 lb N/A 1 lb