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RD (H) 6, 8 Series Regulator

Brand: Swagelok Company
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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.
Features
  • Balanced poppet design
  • Diaphragm sensing
  • Dome-to-outlet pressure ratio approximately 1:1
  • Maximum Inlet Pressure: 
    • RD - psig: 1,015 (bar: 70, kPa: 6,998)
    • RDH - psig: 5,800 (bar: 400, kPa: 39,989)
  • Maximum Outlet Pressure:
    • RD - psig: 1,015 (bar: 70, kPa: 6,998)
    • RDH - psig: 5,800 (bar: 400, kPa: 39,989) - psig: 2,537 (bar: 175, kPa: 17,490) with pilot regulator
  • Sensing Type: Diaphragm
  • Temperature Range: -20 to 80°C (-4 to 176°F)
  • Flow Coefficient: 1.95 - 2.07 Cv
  • Connections:
    • Inlet/Outlet: 3/4 - 1" NPT, ISO/BSP Parallel Thread, EN or ASME Flange
    • Gauge: 1/4" NPT
    • Dome: 1/4" ISO/BSP Parallel Thread
  • Construction Material:
    • Dome: 316L Stainless Steel
    • Diaphragm: EPDM, FKM or Nitrile
    • Poppet:
      • RD: 316L Stainless Steel
      • RDH: 431 Stainless Steel
    • Body Material: 316L Stainless Steel
    • Seal Materials: Fluorocarbon FKM, Nitrile, EPDM, PCTFE, PEEK
    • Seat: 316L Stainless Steel
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.
Features
  • Balanced poppet design
  • Diaphragm sensing
  • Dome-to-outlet pressure ratio approximately 1:1
  • Maximum Inlet Pressure: 
    • RD - psig: 1,015 (bar: 70, kPa: 6,998)
    • RDH - psig: 5,800 (bar: 400, kPa: 39,989)
  • Maximum Outlet Pressure:
    • RD - psig: 1,015 (bar: 70, kPa: 6,998)
    • RDH - psig: 5,800 (bar: 400, kPa: 39,989) - psig: 2,537 (bar: 175, kPa: 17,490) with pilot regulator
  • Sensing Type: Diaphragm
  • Temperature Range: -20 to 80°C (-4 to 176°F)
  • Flow Coefficient: 1.95 - 2.07 Cv
  • Connections:
    • Inlet/Outlet: 3/4 - 1" NPT, ISO/BSP Parallel Thread, EN or ASME Flange
    • Gauge: 1/4" NPT
    • Dome: 1/4" ISO/BSP Parallel Thread
  • Construction Material:
    • Dome: 316L Stainless Steel
    • Diaphragm: EPDM, FKM or Nitrile
    • Poppet:
      • RD: 316L Stainless Steel
      • RDH: 431 Stainless Steel
    • Body Material: 316L Stainless Steel
    • Seal Materials: Fluorocarbon FKM, Nitrile, EPDM, PCTFE, PEEK
    • Seat: 316L Stainless Steel
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Specifications

Brand

Ambient Temperature Range

  • -20° to 80° C (-4° to 176° F)

Anti-Tamper

  • Anti-tamper

BSP Connection

  • 1” BSPP Female (ISO)
  • 3/4” BSPP Female - ISO

Diaphragm Material

  • EPDM
  • FKM
  • Nitrile

Dome

  • 316L Stainless Steel

Enclosure, Body Material

  • 316L Stainless Steel

Flange Size - 1” (DN 25)

  • 1” (DN 25) - 150#
  • 1” (DN 25) - 1500#
  • 1” (DN 25) - 2500#
  • 1” (DN 25) - 300#
  • 1” (DN 25) - 600#
  • 1” (DN 25) - PN 16
  • 1” (DN 25) - PN 40

Flange Size - 3/4” (DN 20)

  • 3/4” (DN 20) - 150#
  • 3/4” (DN 20) - 1500#
  • 3/4” (DN 20) - 2500#
  • 3/4” (DN 20) - 300#
  • 3/4” (DN 20) - 600#
  • 3/4” (DN 20) - PN 16
  • 3/4” (DN 20) - PN 40

Flange Type

  • Raised Face Smooth
  • RTJ - Ring Typical Joint

Flow Rate

  • 1.95 Cv
  • 2.07 Cv

Gauge Connection

  • GN2
  • GN4
  • GN5
  • Standard

Media

  • Gas
  • Liquids & Gases

NACE & NIST

  • NACE MR-0175, ISO 15156

NPT Connection

  • 1” NPT Female
  • 3/4” NPT Female

O-Ring Material

  • Ethylene Propylene (EPR)
  • FKM
  • Nitrile

Poppet Material

  • 316L Stainless Steel
  • 413 Stainless Steel

Pressure Range

  • bar: 0 to 175
  • kPa: 0 to 17,491
  • psig: 0 to 2,537

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: 70 to 400
  • kPa: 6,998 to 39,989
  • psig: 1,015 to 5,800
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