Products > Direct-Operated Regulators > Back Pressure-Relief Valves

MODEL	TYPICAL APPLICATIONS	SPECIFICATIONS
R Series	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
10691 Series	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
3040 Series	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
Products > Direct-Operated Regulators > Back Pressure-Relief Valves