803011211 XCMG GR2605 motor grader filling valve

803011211 XCMG GR2605 motor grader filling valve

Part Number: 803011211
Compatible Model: XCMG GR2605 Grader
Product Positioning: Used for hydraulic oil filling, replenishment, and venting protection in hydraulic oil tanks. It combines convenient filling with oil contamination prevention, and is a key component to ensure the cleanliness and stability of hydraulic system oil levels.

Key Technical Parameters

1. Pressure and Sealing Performance
Working Pressure Range: 0~1.2MPa (Suitable for normal/low pressure fuel tank operation)
Leakage Rate: ≤0.003cm³/h (under rated pressure)
One-Way Opening Pressure: ≤0.05MPa (Ensuring smooth filling)
Maximum Filling Flow Rate: ≥50L/min (Suitable for standard fuel nozzle filling requirements)

2. Structure and Dimensions
Structure: One-way filling valve (integrated filter + sealing cap)
Installation Method: Threaded installation, compatible with original fuel tank filling port interface
Interface Specifications: Nominal diameter of filling port DN50, thread specification M60×2 (compliant with engineering machinery filling port standards)
Filter Parameters: Built-in 120-mesh stainless steel filter, filtration accuracy ≤125μm
Dimensions: Total length 110mm, head outer diameter 85mm, installation thread length 40mm

3. Material and Weather Resistance
Valve Body Material: High-quality aluminum alloy 6063-T5 (die-cast + anodized), tensile strength ≥240MPa
Valve Core Material: Engineering plastic PA66 + glass fiber (reinforced wear resistance)
Seals: Imported nitrile rubber (NBR) + fluororubber (FKM) combination seal, suitable for working environments from -40℃ to 120℃
Filter Material: 304 stainless steel (corrosion resistant, washable)
Corrosion Resistance Rating: Anodized + anti-corrosion coating, no rust after ≥600 hours of salt spray testing

Core Functions and Application Scenarios

1. Main Functions
Fast Filling: Large diameter design + Low opening pressure enables rapid hydraulic oil filling, improving replenishment efficiency.
One-way sealing: Automatically seals after filling, preventing air, dust, and mud from entering and ensuring oil cleanliness.
Impurity filtration: Built-in high-precision filter screen filters impurities introduced during filling, protecting core components such as the hydraulic pump and valve assembly.
Air permeability balance: Integrated micro-permeable structure balances the pressure inside and outside the oil tank, preventing tank deformation.
Overflow prevention design: Overflow prevention edge at the filling port + leak-proof sealing cap design prevents oil spillage and contamination.

2. Suitable operating conditions
Routine equipment maintenance and hydraulic oil replenishment scenarios
Filling operations in dusty and muddy environments such as construction sites and repair stations
Outdoor operating environments with alternating high and low temperatures (-40℃~120℃)
Maintenance needs of hydraulic systems requiring frequent replenishment and long-term continuous operation.

Product advantages

Original factory compatibility: Fully matches the GR2605 hydraulic oil tank filling port size and thread specifications, direct installation without modification.
High-efficiency filling: DN50 large diameter. Opening pressure ≤ 0.05MPa, high-flow-rate filling up to 50L/min, reducing refill time by 30%. Reliable sealing: Combined sealing structure + one-way valve design, leak-proof and contamination-proof, ensuring oil cleanliness. Durable: High-strength aluminum alloy + 304 stainless steel filter screen, corrosion-resistant, wear-resistant, and long service life. Easy maintenance: The filter screen is removable, washable, and reusable; seals are easy to replace, reducing maintenance costs. Safe and environmentally friendly: Overflow-proof design avoids oil waste and environmental pollution, meeting environmental standards for engineering machinery.

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