Expansion Valve (Part No.: 860500908) for XCMG Rollers
Material Selection:
Valve body: Steel for corrosion resistance.
Internal components (needle, spring): High-carbon steel (60Si2MnA) hardened to 45-50 HRC.
CNC Machining:
Valve body and ports are milled to ±0.05 mm tolerances using 5-axis CNC.
Threads and sealing surfaces are polished to Ra ≤1.6 μm.
Heat Treatment:
Components undergo vacuum quenching (850°C) and tempering (450°C) to enhance wear resistance.
Assembly:
Spring and needle are calibrated for pressure regulation (10-15 MPa range).
Seals (NBR or Viton) are installed with torque-controlled tools.
Testing:
Leakage test: Submerged in 2.5 MPa nitrogen for 30 minutes.
Flow calibration: Adjusted to meet 15±0.5 L/min standard.
Surface Treatment:
Electroplated with nickel (8-12 μm) for oxidation protection.
Strict adherence to 15407 ensures reliability in extreme temperatures (-30°C to +120°C).
Product Deatials
| Part Name | Expansion Valve | Part Number | 860500908 |
| Model | TYJ2-515 | Application | XCMG Roller |
| Package Size | / | GW | 1.5KG |
| MOQ | 1 PC | Brand Name | CBP |
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