Swagelok, Air-Loaded Pressure-Reducing Regulator, RA
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RA Series Regulator

Brand: Swagelok Company

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
  • Air-loaded pressure control with a choice of pilot-to-outlet pressure ratios.
  • Remote control
  • Captured self-vent
  • Choice of dome-to outlet pressure ratios: 1:15, 1:40, or 1:70
  • Pneumatic actuation by spring-loaded regulator or proportional regulator
  • Maximum Inlet Pressure: psig: 5,800 (bar: 400, kPa: 39,990)
  • Maximum Outlet Pressure: psig: 5,800 (bar: 400, kPa: 39,990)
  • Temperature Range: -20 to 80°C (-4 to 176°F)
  • Flow Coefficient: 1.84 Cv
  • Connections:
    • Inlet/Outlet: 1/2 to 1" NPT, ISO/BSP Parallel Thread, EN or ASME Flange
    • Gauge: 1/4" NPT
    • Dome: 1/4" ISO/BSP Parallel Thread
    • Vent: 1/8" ISO/BSP Parallel Thread 
  • Materials of Construction:
    • Piston: 316L Stainless Steel
    • Poppet: 431 Stainless Steel
    • Body: 316L Stainless Steel
    • Seal: Fluorocarbon FKM, Nitrile, EPDM
    • Diaphragm: EPDM, FKM, Nitrile
    • O-Ring: EPDM, FKM, Nitrile

Specifications

Brand

Ambient Temperature Range

  • -20° to 80° C (-4° to 176° F)

BSP Connection

  • 1" BSPP Female (ISO)
  • 1/2" 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 - 1/2” (DN 15)

  • 1/2" (DN 15) - 150#
  • 1/2" (DN 15) - 1500#
  • 1/2" (DN 15) - 2500#
  • 1/2" (DN 15) - 300#
  • 1/2" (DN 15) - 600#
  • 1/2" (DN 15) - PN 16
  • 1/2" (DN 15) - 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

  • 1.84 Cv

Gauge Connection

  • GN2
  • GN4
  • GN5
  • Standard

Media

  • Gas
  • Liquids & Gases

NACE & NIST

  • NACE MR-0175, ISO 15156

NPT Connection

  • 1" NPT Female
  • 1/2" NPT Female
  • 3/4" NPT Female

O-Ring Material

  • Ethylene Propylene (EPR)
  • FKM
  • Nitrile

Piston Material

  • 316L Stainless Steel

Poppet Material

  • 431 Stainless Steel

Pressure Range

  • bar: 400
  • kPa: 39,989
  • psig: 5,800

Ratio

  • 1:70
  • 1:15
  • 1:40

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: 400
  • kPa: 39,989
  • psig: 5,800

Vent

  • Captured Self-Vent

Documentation

Data Sheets

Catalogs

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