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R Series
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The R Series Back Pressure-Relief Valves are
used in the following applications: Water pump bypass for irrigation, sprinkler systems on
golf courses, fountains and fire protection systems Fuel oil pump bypass on commercial systems or large residential systems. CATALOG SPEC SHEET(S) |
Model: R Series
Service: Liquids
Body Material: Bronze
Seat Material: Bronze
Valve Material: Stainless Steel (1/2" - 1 1/2"), Bronze (2" - 3")
Max Capacity (@ 20% Over Set Pressure, 3" Size): 16.0 GPM
Max Inlet Pressure: 300 PSIG
Sizes: 1/2" - 3"
Connections: NPT |
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10691 Series
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The 10691 Series Back Pressure-Relief Valves are
used in the following applications:
Water pump bypass for irrigation, sprinkler systems on
golf courses, fountains and fire protection systems Fuel oil pump bypass on commercial systems or large residential systems.
Note: 10691 Series has EPDM seat for tight shutoff. CATALOG SPEC SHEET(S) |
Model: 10691 Series
Service: Liquids
Body Material: Bronze
Seat Material: EPDM
Valve Material: Stainless Steel (1/2" - 1 1/2"), Bronze (2" - 3")
Max Capacity (@ 20% Over Set Pressure, 3" Size): 16.0 GPM
Max Inlet Pressure: 300 PSIG
Sizes: 1/2" - 1"
Connections: NPT |
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3040 Series
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The 3040 Series Back Pressure-Relief Valves relieve upstream
pressure in a variety of processes. Automatically
maintains desired maximum pressure in a vessel or
system by relieving excess pressure into lower pressure
return line or to atmosphere. Ideally suited for use as
pump bypass control valve by maintaining constant
pump discharge pressures. Used as a continuously
operating valve for protection against overpressure
conditions. CATALOG SPEC SHEET(S) |
Model: 3040 Series
Service: Water, Oil, Other Liquids, Air
Body Material: Bronze (1/2" - 1 1/2" NPT), Cast Iron (2" NPT & FLG)
Disc Material: Buna-N/Teflon (200°F Max)
Diaphragm Material: Neoprene/Nylon (200°F Max)
Valve Material: Stainless Steel (1/2" - 1 1/2"), Bronze (2" - 3")
Max Capacity (@ 20% Over Set Pressure, 2" Size): 278 GPM
Max Inlet Pressure: 250 PSIG
Sizes: 1/2" - 2"
Connections: NPT, 125# FLG, 250# FLG |
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