Images are representations only.

LPRS 4, 6, 8 Pressure-Reducing Regulator

Brand: Swagelok Company
The RS series pressure-reducing regulators are suitable for most gases and liquids.

The RS series regulators feature various poppet designs, a choice of sensing types, and seat and seal materials to accommodate a variety of pressure, temperature, and flow conditions.
Features
  • Balanced poppet design
  • Diaphragm sensing
  • Large diaphragm for higher accuracy
  • Suction tube for reduced droop
  • Ideal as second-stage regulator 
  • Maximum Inlet Pressure: psig: 232 (bar: 16, kPa: 1,600)
  • Maximum Outlet Pressure: psig: 43 (bar: 3, kPa: 296)
  • Sensing Type: Diaphragm
  • Temperature Range:-20 to 80°C (-4 to 176°F)
  • Flow Coefficient: 1.84, 1.95, 2.07 Cv
  • Connections:
    • Inlet/Outlet: 1/2" DN15, 3/4" DN20, 1" DN25, NPT, ISO/BSP parallel thread, ASME or EN flange
    • Gauge: 1/4" NPT 
  • Materials of Construction:
    • Poppet: 316L Stainless Steel
    • Body: 316L Stainless Steel
    • Seal: Fluorocarbon FKM, Nitrile, EPDM
    • Diaphragm: PTFE, EPDM, FKM or Nitrile
    • O-Ring: EPDM, FKM, Nitrile
    • Seat: 316L Stainless Steel
show more
The RS series pressure-reducing regulators are suitable for most gases and liquids.

The RS series regulators feature various poppet designs, a choice of sensing types, and seat and seal materials to accommodate a variety of pressure, temperature, and flow conditions.
Features
  • Balanced poppet design
  • Diaphragm sensing
  • Large diaphragm for higher accuracy
  • Suction tube for reduced droop
  • Ideal as second-stage regulator 
  • Maximum Inlet Pressure: psig: 232 (bar: 16, kPa: 1,600)
  • Maximum Outlet Pressure: psig: 43 (bar: 3, kPa: 296)
  • Sensing Type: Diaphragm
  • Temperature Range:-20 to 80°C (-4 to 176°F)
  • Flow Coefficient: 1.84, 1.95, 2.07 Cv
  • Connections:
    • Inlet/Outlet: 1/2" DN15, 3/4" DN20, 1" DN25, NPT, ISO/BSP parallel thread, ASME or EN flange
    • Gauge: 1/4" NPT 
  • Materials of Construction:
    • Poppet: 316L Stainless Steel
    • Body: 316L Stainless Steel
    • Seal: Fluorocarbon FKM, Nitrile, EPDM
    • Diaphragm: PTFE, EPDM, FKM or Nitrile
    • O-Ring: EPDM, FKM, Nitrile
    • Seat: 316L Stainless Steel

Specifications

Actuator Type

  • Anti-Tamper Cover
  • Knob Assembly

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
  • PTFE

Enclosure, Body Material

  • 316L Stainless Steel

Flange Size - 1” (DN 25)

  • 1” (DN 25) - 150#
  • 1” (DN 25) - PN 40

Flange Size - 1/2” (DN 15)

  • 1/2” (DN 15) - 150#
  • 1/2” (DN 15) - PN 40

Flange Size - 3/4” (DN 20)

  • 3/4” (DN 20) - 150#
  • 3/4” (DN 20) - PN 40

Flange Type

  • Raised Face Smooth

Flow Rate

  • 1.84 Cv
  • 1.95 Cv
  • 2.07 Cv

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

Poppet Material

  • 316L Stainless Steel

Pressure Range

  • bar: 0.10 to 3.0
  • kPa: 9.6 to 296
  • psig: 1.4 to 43

Seat / Seal Material

  • 316L Stainless Steel
  • EPDM
  • Fluorocarbon (FKM)
  • Nitrile

Special Cleaning & Packaging

  • ASTM G93 Level C-Cleaned
  • Not Required

Supply Pressure - Maximum

  • bar: 16
  • kPa: 1,599
  • psig: 232

Vent

  • None
  • Self-Venting (with 1/8” NPT)