Products Information

Product Function

81.52101.6269 Pressure Limiting Valve is a critical hydraulic system component tailored for Shacman heavy-duty trucks. It functions as the "hydraulic pressure regulator" of the vehicle, precisely controlling and stabilizing the system pressure within a safe operating range. It automatically cuts off pressure buildup once the preset value is reached and replenishes pressure in a timely manner when the system pressure drops, effectively preventing overpressure damage to pipelines, pumps and other hydraulic parts. Even under heavy load, continuous operation or abrupt load changes, it maintains consistent pressure output, ensuring smooth operation of the vehicle's hydraulic system and avoiding component failures caused by pressure fluctuations. It excels in withstanding harsh working conditions such as long-haul transportation, mining operations, construction sites and mountainous road driving.

Compatibility Details

Applicable Vehicles: Shacman F3000, X3000, M3000S Compatible Hydraulic Systems: Shacman original hydraulic braking systems, lifting systems and steering assist systems OE/OEM Number: 81.52101.6269 Matching Tip: Standardized interface size and mounting dimensions, enabling direct bolt-on installation without welding, drilling or structural modifications. We provide accurate part matching service via vehicle VIN code to eliminate the risk of wrong part selection.

Key Specifications

Item	Details
Overall Size	110mm×85mm×70mm
Net Weight	1.2kg
Material Valve body	High-strength ductile iron; Valve core: Stainless steel; Seal ring: HNBR (hydrogenated nitrile rubber); Spring: Alloy spring steel
Working Pressure	0.8–1.6MPa (precision pressure regulation)
Pressure Setting Accuracy	±0.05MPa
Operating Temperature	-45℃ ~ 130℃ (stable performance without deformation or seal failure)
Pressure Holding Performance	No pressure drop for over 12 hours at rated pressure
Connection Interface	G1/4 threaded oil inlet/outlet, standard mounting thread

81521016269 Shacman Pressure limiting valve1

81521016269 Shacman Pressure limiting valve3

Quality & Performance Assurance

We select raw materials from certified suppliers: ductile iron valve body ensures impact resistance and corrosion resistance; stainless steel valve core guarantees smooth operation and wear resistance; HNBR seal ring offers excellent oil resistance and high/low temperature adaptability. The production process covers precision casting, CNC machining, pressure calibration, seal testing and final assembly inspection. Our automated production lines have an annual output of 150,000 units, supporting both small-batch sample orders and large-scale bulk procurement. Three quality grades are available for selection: Genuine Grade (fully compliant with Shacman's original technical standards and undergoing strict factory testing); OEM Grade (equivalent performance to original parts with more favorable pricing); High-quality Aftermarket Grade (reliable quality meeting daily operation requirements).

Procurement & Service Support

Procurement Terms: We maintain a stock of ≥ 1,000 units; minimum order quantity is 1 unit (sample orders are acceptable). Wholesale discount pricing is available for orders exceeding 200 units. Regular orders are shipped within 24 hours; bulk orders (≥ 500 units) require 5–8 working days of production lead time.

Packaging & Labeling: Neutral carton packaging as standard, with custom branding packaging or export wooden case packaging available upon request (effectively preventing collision damage during long-distance transportation). Each product is wrapped with PE protective film and shock-absorbing foam. The barcode label includes product serial number, OE number, quality grade, production date and inspection results.

After-sales & Customization:

Warranty Policy: Genuine Grade (18 months/300,000km); OEM Grade (12 months/200,000km); High-quality Aftermarket Grade (8 months/150,000km). Free replacement is provided for non-human damage failures such as pressure regulation deviation, oil leakage and valve body cracking.

Technical Support: Free hydraulic system matching consultation, installation guidance and pressure setting adjustment suggestions. We provide remote fault diagnosis service for installation and use problems.

OEM/ODM Service: Customization of pressure setting range, interface size and mounting structure is supported. The minimum sample order quantity is 100 units, with a production cycle of 10–15 working days.

FAQ

Q: How to tell if this 81.52101.6269 Shacman Pressure limiting valve needs replacing?

A: Watch for these signs: Abnormal pressure gauge readings (too high/low), weak braking or soft brake pedal, or oil leaks at valve connections. Replace it right away if any happen to stay safe.

Q: What maintenance does the 81.52101.6269 Shacman Pressure Limiting Valve need?

A: Do these regular checks: Tighten valve inlet/outlet joints monthly to prevent leaks; change system hydraulic oil every 60,000 km (per truck maintenance rules) to avoid performance issues; wipe the valve surface with a clean cloth every 3 months to remove dust and oil.

Q: What do customers say about this product?

A: Drivers and mechanics say: "After installing this valve, my truck's brake pressure stays steady-no weak braking even when loaded heavy." "Fits my Shacman perfectly, and it's still working great after 6 months."

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