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Industrial MicroHydraulics

558 SERIES RELIEF VALVE – FORWARD FLOW

*LOA before installation. All dimensions in millimeters.

LEE PART NO. CRACKING PRESSURE
PCFM2550210S 100 kPa (14.5 psid)
PCFM2550215S 150 kPa (21.8 psid)
PCFM2550220S 200 kPa (29 psid)
PCFM2550225S 250 kPa (36.6 psid)
PCFM2550230S 300 kPa (43.5 psid)
PCFM2550235S 350 kPa (50.8 psid)
PCFM2550240S 400 kPa (58 psid)
PCFM2550250S 500 kPa (72.5 psid)
PCFM2550255S 550 kPa (79.8 psid)
PERFORMANCE
Lohm Rate: 250 Lohms
Leakage: 20 sccm/min. (max.) @172 kPa (25 psid) on air 1 Drop/min. (max.) on hydraulic fluid
Maximum Working Pressure: 28 MPa (4,060 psid) (Checked Direction) 4 MPa (580 psid) (Flow Direction)
Cracking Pressure Tolerance: ±15%
MATERIALS
Body: 303 Stainless Steel
Pin: 416 Stainless Steel
Cage: 305 Stainless Steel
Spring: 302 Stainless Steel
Ball: 440C Stainless Steel
INSTALLATION
Tool Part Number: CCRT0900120S
Force: 625 Kg F (max.)
Click here for installation instructions