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hot sale 7986491 Relief Valve for Excavator E330D E345D - Tonkee Machinery

Hydraulic Pump/

hot sale 7986491 Relief Valve for Excavator E330D E345D

E330D Relief Valve

Compatibility Check: Confirm the excavator model is E330D/E345D (verify main control valve interface size matches 1-1/4" BSPP thread).

Cleanliness Assurance: Clean the mounting interface and hydraulic lines before installation to avoid contaminant-induced valve jamming.

Torque Specification: Tighten the valve to 85 - 95 N·m (62 - 70 ft-lbs) using a torque wrench; over-tightening may damage threads or valve body.

Pressure Calibration: After installation, calibrate the relief pressure to 345 bar (5000 psi) using a hydraulic pressure gauge (follow Caterpillar E330D/E345D service manual guidelines).

  • Product Details
Parameter Specification
Rated Pressure Setting 345 bar (5000 psi)
Maximum Operating Pressure 380 bar (5510 psi)
Pressure Adjustment Range 280 – 360 bar (4060 – 5220 psi)
Flow Capacity 180 L/min (47.5 US gal/min)
Valve Type Direct-acting relief valve (with damping adjustment)
Body Material High-strength forged steel (SAE 1045) with anti-corrosion coating
Seal Material Nitrile rubber (NBR) + polytetrafluoroethylene (PTFE) (high-pressure and temperature resistance)
Inlet/Outlet Port Size Inlet: 1-1/4″ BSPP thread; Outlet: 1″ BSPP thread
Working Temperature Range -20°C to +110°C (-4°F to 230°F)
Dry Weight Approx. 2.8 kg (6.2 lbs)
Mounting Type Threaded mounting (compatible with excavator main control valve interface)

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