SSP Corporation
SSP Corporation
8250 Boyle Parkway
Twinsburg, OH 44087-2200
U.S.A.
Phone: 330-425-4250
Email: customer.inquiries@myssp.com
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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
RL-web
Unit of Measure
1 2 

Part #

CAD

Body Material

Connection 1 - Type

Connection 1 - Size

Connection 2 - Type

Connection 2 - Size

Seal Material

Set Pressure Range

Product Descriptions

End Connection Type

RL34MRT4FRT-316 N/A CAD Icon (for items table) N/A 316 SS N/A Male BSPT N/A 1/4-19 N/A Female BSPT N/A 1/4-19 N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female ISO Tapered Proportional Relief Valve N/A Male British Standard Pipe Tapered by Female British Standard Pipe Tapered
RL34MRT4FRT-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A Male BSPT N/A 1/4-19 N/A Female BSPT N/A 1/4-19 N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female ISO Tapered Proportional Relief Valve N/A Male British Standard Pipe Tapered by Female British Standard Pipe Tapered
RL34MRT4FRT-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A Male BSPT N/A 1/4-19 N/A Female BSPT N/A 1/4-19 N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female ISO Tapered Proportional Relief Valve N/A Male British Standard Pipe Tapered by Female British Standard Pipe Tapered
RL34PM4PF-316 N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/4-18 N/A FNPT N/A 1/4-18 N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female NPT Proportional Relief Valve N/A Male National Pipe Thread by Female National Pipe Thread
RL34PM4PF-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/4-18 N/A FNPT N/A 1/4-18 N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female NPT Proportional Relief Valve N/A Male National Pipe Thread by Female National Pipe Thread
RL34PM4PF-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/4-18 N/A FNPT N/A 1/4-18 N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female NPT Proportional Relief Valve N/A Male National Pipe Thread by Female National Pipe Thread
RL34PMD4-316 N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/4-18 N/A Duolok Tube Fitting N/A 1/4 in N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Male NPT to Duolok Tube Fitting Proportional Relief Valve N/A Male National Pipe Thread by Duolok Tube End
RL34PMD4-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/4-18 N/A Duolok Tube Fitting N/A 1/4 in N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Male NPT to Duolok Tube Fitting Proportional Relief Valve N/A Male National Pipe Thread by Duolok Tube End
RL34PMD4-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/4-18 N/A Duolok Tube Fitting N/A 1/4 in N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Male NPT to Duolok Tube Fitting Proportional Relief Valve N/A Male National Pipe Thread by Duolok Tube End
RL3D4-316 N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3D4-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3D4-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3DM6-316 N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 6 mm N/A Duolok Tube Fitting N/A 6 mm N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3DM6-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 6 mm N/A Duolok Tube Fitting N/A 6 mm N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3DM6-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 6 mm N/A Duolok Tube Fitting N/A 6 mm N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3DM8-316 N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 8 mm N/A Duolok Tube Fitting N/A 8 mm N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3DM8-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 8 mm N/A Duolok Tube Fitting N/A 8 mm N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL3DM8-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 8 mm N/A Duolok Tube Fitting N/A 8 mm N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
RL48PM8PF-316 N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/2-14 N/A FNPT N/A 1/2-14 N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female NPT Proportional Relief Valve N/A Male National Pipe Thread by Female National Pipe Thread
RL48PM8PF-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/2-14 N/A FNPT N/A 1/2-14 N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female NPT Proportional Relief Valve N/A Male National Pipe Thread by Female National Pipe Thread
RL48PM8PF-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/2-14 N/A FNPT N/A 1/2-14 N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Male to Female NPT Proportional Relief Valve N/A Male National Pipe Thread by Female National Pipe Thread
RL48PMD8-316 N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/2-14 N/A Duolok Tube Fitting N/A 1/2 in N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Male NPT to Duolok Tube Fitting Proportional Relief Valve N/A Male National Pipe Thread by Duolok Tube End
RL48PMD8-316-BN N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/2-14 N/A Duolok Tube Fitting N/A 1/2 in N/A Nitrile N/A 10 to 225 psig0.7 to15.5 bar N/A Male NPT to Duolok Tube Fitting Proportional Relief Valve N/A Male National Pipe Thread by Duolok Tube End
RL48PMD8-316-EP N/A CAD Icon (for items table) N/A 316 SS N/A MNPT N/A 1/2-14 N/A Duolok Tube Fitting N/A 1/2 in N/A EPDM N/A 10 to 225 psig0.7 to15.5 bar N/A Male NPT to Duolok Tube Fitting Proportional Relief Valve N/A Male National Pipe Thread by Duolok Tube End
RL4D8-316 N/A CAD Icon (for items table) N/A 316 SS N/A Duolok Tube Fitting N/A 1/2 in N/A Duolok Tube Fitting N/A 1/2 in N/A FKM N/A 10 to 225 psig0.7 to15.5 bar N/A Duolok Tube End Proportional Relief Valve N/A Duolok Tube End
Unit of Measure
1 2