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Description
These pressure-reducing, dome-loaded and air-loaded regulators are suitable for most gases and liquids, including acids and oils.
These regulators feature various poppet designs, a pressure-sensing diaphragm (piston in RD2 series), and a choice of seat and seal materials to accommodate a variety of pressure, temperature, and flow conditions.
The RDH series regulators are high-pressure versions of the RD series regulators, and the LPRD series are low-pressure, high-accuracy versions of the RD series regulators. The RA series regulators are air-loaded regulators.
Features- Balanced poppet design
- Diaphragm sensing
- Integral pilot regulator (LPRS4 series) with dynamic regulation
- High flow
- Large diaphragm for high accuracy
- Integral feedback line
- Inlet and outlet gauges
- Maximum Inlet Pressure: psig: 232 (bar: 16, kPa: 1,600)
- Maximum Outlet Pressure: psig: 29 (bar: 2, kPa: 199)
- Sensing Type: Diaphragm
- Temperature Range: -20 to 80°C (-4 to 176°F)
- Flow Coefficient: 13, 21, 36, 73 Cv
- Connections:
- Inlet/Outlet: 2 to 4" EN or ASME Flange
- Dome: 1/4" ISO/BSP Parallel Thread
- Materials of Construction:
- Body: 316L Stainless Steel
- Seat: 316L Stainless Steel
- Dome: 316L Stainless Steel
- O-Ring: Fluorocarbon FKM, Nitrile, EPDM
- Diaphragm: Fluorocarbon FKM, Nitrile, EPDM
- Seal: Fluorocarbon FKM, Nitrile, EPDM
- Poppet: 431 Stainless Steel
Inventory
Displaying prices & availability for Ohio, United States in USD. Change location.
Models matching criteria: 3,456
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - EPDM
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - EPDM
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Nitrile
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - Nitrile
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - EPDM
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 4" / DN 100
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - EPDM
- Diaphragm - Nitrile
- Seat Seal Material - EPDM
- Special Cleaning - Not Required
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - EPDM
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Nitrile
- Diaphragm - Nitrile
- Seat Seal Material - Nitrile
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2" / DN 50
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Nitrile
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2" / DN 50
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - Nitrile
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 4" / DN 100
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Nitrile
- Seat Seal Material - Nitrile
- Special Cleaning - Not Required
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - Not Required
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - EPDM
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - EPDM
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 4" / DN 100
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 4" / DN 100
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Nitrile
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2" / DN 50
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - EPDM
- Seat Seal Material - Nitrile
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 4" / DN 100
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - EPDM
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 4" / DN 100
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Nitrile
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - Nitrile
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - EPDM
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - EPDM
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - Not Required
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - EPDM
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Nitrile
- Diaphragm - EPDM
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2-1/2" / DN 65
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Nitrile
- Seat Seal Material - Nitrile
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - EPDM
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2" / DN 50
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Fluorocarbon (FKM)
- Diaphragm - Nitrile
- Seat Seal Material - Nitrile
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 2" / DN 50
- Pressure Class - DN Class PN 40
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - Not Required
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 2" / DN 50
- Pressure Class - ASME Class 150
- Flange Facing - Raised Face Smooth
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Nitrile
- Special Cleaning - Not Required
Out of Stock
- Process Connection - ASME B16.5 Flange
- Connection Size - 3" / DN 80
- Pressure Class - ASME Class 150
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 1.4 to 14.5 (bar: 0.10 to 1, kPa: 9.6 to 99.9)
- Seal Material - Nitrile
- Diaphragm - Fluorocarbon (FKM)
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - ASTM G93 Level C-Cleaned
Out of Stock
- Process Connection - EN 1092 (DIN) Flange
- Connection Size - 2" / DN 50
- Pressure Class - DN Class PN 40
- Flange Facing - RTJ - Ring Type Joint
- Pressure Range - psig: 4.3 to 43 (bar: 0.30 to 3.0, kPa: 29.6 to 296.5)
- Seal Material - Nitrile
- Diaphragm - EPDM
- Seat Seal Material - Fluorocarbon (FKM)
- Special Cleaning - Not Required
Out of Stock
Configure
Specifications
Specifications
Brand
Ambient Temperature Range
- -20° to 80° C (-4° to 176° F)
Diaphragm Material
- EPDM
- FKM
- Nitrile
Dome
- 316L Stainless Steel
Enclosure, Body Material
- 316L Stainless Steel
Flange Size - 2-1/2” (DN 65)
- 2-1/2” (DN 65) - 150#
- 2-1/2” (DN 65) - PN 40
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150#
- 2” (DN 50) - PN 40
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150#
- 3” (DN 80) - PN 40
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150#
- 4” (DN 100) - PN 40
Flange Type
- Raised Face Smooth
- RTJ - Ring Typical Joint
Flow Rate
- 13 Cv
- 21 Cv
- 36 Cv
- 73 Cv
Media
- Gas
- Liquids & Gases
O-Ring Material
- Ethylene Propylene (EPR)
- FKM
- Nitrile
Poppet Material
- 431 Stainless Steel
Pressure Range
- bar: 0.1 to 2.0
- kPa: 9.6 to 199
- psig: 1.4 to 29
Relief
- High Flow
Seat / Seal Material
- EPDM
- Fluorocarbon (FKM)
- Nitrile
Special Cleaning & Packaging
- ASTM G93 Level C-Cleaned
- Not Required
Supply Pressure - Maximum
- bar: 16
- kPa: 1,599
- psig: 232
