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RD (H) 20, 25 Series Regulator
Brand: Swagelok CompanyThese 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, 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.
Features- Balanced poppet design
- Diaphragm sensing
- Integral pilot regulator with dynamic regulation
- Dome-to-outlet pressure ratio approximately 1:1
- Large dome for improved stability
- Pilot regulator for improved performance
- External feedback (EF) for improved performance
- EF to main regulator limited by standard outlet pressure range
- EF to pilot regulator limited to 290 psig (20.0 bar)
- Maximum Inlet Pressure:
- RD - psig: 1,015 psig (bar: 70, kPa: 6,998); psig: 507 (bar: 35, kPa: 3,496) with LRS4 pilot regulator
- RDH20 - psig: 5,800 (bar: 400, kPa: 39,990)
- RDH25 - psig: 4,060 (bar: 280, kPa: 27,990)
- Maximum Outlet Pressure:
- RD - psig: 1,015 (bar: 70, kPa: 6,998)
- RDH - psig: 2,900 (bar: 200, kPa: 19,990)
- Sensing Type: Diaphragm
- Temperature Range: -20 to 80°C (-4 to 176°F)
- Flow Coefficient: 13, 21 Cv
- Connections:
- Inlet/Outlet: 2, 2 1/2" NPT, ISO/BSP parallel thread, EN or ASME Flange
- Gauge: Use P1 gauge connection of pilot regulator
- Dome: 1/4" ISO/BSP Parallel Thread
- Construction Material:
- Body: 316L Stainless Steel
- O-Ring: Fluorocarbon FKM, Nitrile, EPDM
- Dome: 316L Stainless Steel
- Poppet: 316L Stainless Steel
- Diaphragm: EPDM, FKM, Nitrile
- Seat Seal:
- RD: EPDM, FKM, Nitrile
- RDH: PEEK, PCTFE
Specifications
Brand
Ambient Temperature Range
- -20° to 80° C (-4° to 176° F)
BSP Connection
- 2" BSPP Female - ISO
- 2-1/2" BSPP Female - ISO
Diaphragm Material
- EPDM
- Fluorocarbon (FKM)
- Nitrile
Elastomers
- EPDM
- Fluorocarbon
- Nitrile
Enclosure, Body Material
- 316L Stainless Steel
Feedback
- External Feedback to Main Regulator
- External Feedback to Pilot Regulator
- No Feedback
Flange Size - 2-1/2” (DN 65)
- 2-1/2" (DN 65) - 150#
- 2-1/2" (DN 65) - 1500#
- 2-1/2" (DN 65) - 2500#
- 2-1/2" (DN 65) - 300#
- 2-1/2" (DN 65) - 600#
- 2-1/2" (DN 65) - PN 16
- 2-1/2" (DN 65) - PN 40
Flange Size - 2” (DN 50)
- 2" (DN 50) - 150#
- 2" (DN 50) - 1500#
- 2" (DN 50) - 2500#
- 2" (DN 50) - 300#
- 2" (DN 50) - 600#
- 2" (DN 50) - PN 16
- 2" (DN 50) - PN 40
Flange Type
- Raised Face Smooth
- RTJ - Ring Typical Joint
Flow Rate
- 13 Cv
- 21 Cv
Media
- Gas
- Liquids & Gases
NACE & NIST
- NACE MR-0175, ISO 15156
NPT Connection
- 2" NPT Female
- 2-1/2" NPT Female
O-Ring Material
- Ethylene Propylene (EPR)
- FKM
- Nitrile
Poppet Material
- 316L Stainless Steel
Pressure Range
- bar: 0 to 200
- kPa: 0 to 19,990
- psig: 0 to 2,900
Seat / Seal Material
- 316L Stainless Steel
- EPDM
- Fluorocarbon (FKM)
- Nitrile
- PCTFE
- PEEK
Special Cleaning & Packaging
- ASTM G93 Level C-Cleaned
- Not Required
Supply Pressure - Maximum
- bar: 35 to 399.9
- kPa: 3,496 to 39,990
- psig: 507 to 5,800