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Low Pressure Proportional Relief Valves

RL Series proportional relief valves protect pressure sensitive equipment in systems with working pressures up to 300 psig (20.6 bar) and set pressures from 10 to 225 psig (0.7 to 15.5 bar).

Set Pressures:

  • Temperature Range: -40 to 300°F (-40 to 300°C)
  • MAWP:  300 psig (20.6 bar)
  • Set Pressure Range: 10 to 225 psig (0.7 to 15.5 bar) One spring for the full set pressure range. RL Series valves are shipped with springs installed.

End Connections:

  • RL3: 1/4 in., 6 mm and 8 mm tube ends, 1/4 in. NPT and BSPT pipe ends
  • RL4: 1/2 in. and 12 mm tube ends 1/2 in. NPT and BSPT pipe ends

 Options

  • Factory set valves
  • Manual override handle
  • Seal Materials
    • Fluorocarbon FKM (Standard)
    • Nitrile
    • Ethylene Propylene
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RL3-Male-to-Female-Render

Proportional Relief Valves - Low Pressure
RL3-Male-to-Female-Render

Proportional Relief Valves - Low Pressure
RL3-Male-to-Female-Render

Proportional Relief Valves - Low Pressure
RL3-Male-to-Female-Render

Proportional Relief Valves - Low Pressure
RL3-Male-to-Female-Render

Proportional Relief Valves - Low Pressure
Description N/A Valve, Proportional Relief, Low Pressure, Body Material: 316 SS, 1/4 in Male BSPT x 1/4 in Female BSPT, Seal Material: FKM, Working Pressure: 300, Temperature: 10 to 275 N/A Valve, Proportional Relief, Low Pressure, Body Material: 316 SS, 1/4 in Male BSPT x 1/4 in Female BSPT, Seal Material: Nitrile, Working Pressure: 300, Temperature: -10 to 250 N/A Valve, Proportional Relief, Low Pressure, Body Material: 316 SS, 1/4 in Male BSPT x 1/4 in Female BSPT, Seal Material: EPDM, Working Pressure: 300, Temperature: -40 to 250 N/A Valve, Proportional Relief, Low Pressure, Body Material: 316 SS, 1/4 in MNPT x 1/4 in FNPT, Seal Material: FKM, Working Pressure: 300, Temperature: 10 to 275 N/A Valve, Proportional Relief, Low Pressure, Body Material: 316 SS, 1/4 in MNPT x 1/4 in FNPT, Seal Material: Nitrile, Working Pressure: 300, Temperature: -10 to 250
Body Material N/A 316 SS
Connection 1 - Type N/A Male BSPT N/A Male BSPT N/A Male BSPT N/A MNPT N/A MNPT
Connection 1 - Size N/A 1/4 in
Connection 2 - Type N/A Female BSPT N/A Female BSPT N/A Female BSPT N/A FNPT N/A FNPT
Connection 2 - Size N/A 1/4 in
A Max N/A 2.70 in68.6 mm
C N/A 1.17 in20.7 mm
D N/A 0.41 in10.4 mm
E Max N/A 3.89 in98.8 mm
Orifice N/A N/A 0.19 in N/A 0.19 in N/A N/A 0.19 in
Seal Material N/A FKM N/A Nitrile N/A EPDM N/A FKM N/A Nitrile
B N/A 1.19 in30.2 mm
Set Pressure Range N/A 10 to 225 psig0.7 to15.5 bar
Working Pressure N/A 300 psig20.6 bar
Product Descriptions N/A Female ISO/BSPT N/A Female ISO/BSPT N/A Female ISO/BSPT N/A Male NPT to Female NPT N/A Male NPT to Female NPT