803000776 Counterbalance Back Pressure Valve for XCMG XCA100 All Terrain Crane

1. Product Overview of 803000776 XCMG XCA100 Counterbalance Valve

The 803000776 counterbalance valve, also known as back pressure valve, is a core hydraulic safety spare part specially designed for XCMG XCA100 100-ton all terrain crane luffing and telescopic boom hydraulic system. As a one-stop XCMG construction machinery parts supplier, Top Run Parts provides 100% interchangeable OEM replacement valve with original factory technical standards, perfectly matching XCA100 full hydraulic circuit.

This hydraulic back pressure valve acts as load holding & anti-free fall component installed on boom luffing cylinder. It builds stable back pressure inside return oil pipeline to control the descending speed of heavy load, effectively solving the hidden danger of sudden load drop caused by self-weight or hose rupture during crane lifting operation. All our 803000776 balance valves pass strict hydraulic pressure test before delivery, with zero leakage performance and long service life for heavy-duty construction working conditions.

Related Internal Link: Full Range XCMG XCA Series All Terrain Crane Spare Parts

2. Core Functions of Back Pressure Counterbalance Valve for Crane Hydraulic System

• Heavy Load Locking & Zero Leakage Holding
  Hard sealing poppet structure realizes near-zero internal leakage, stably lock the boom and suspended load for long-time static parking, no boom sinking or load slipping phenomenon.

• Controlled Smooth Load Descending
  Automatically adjust back pressure according to load weight, avoid boom jitter, impact and out-of-control rapid falling during luffing retraction and load lowering.

• Pipeline Burst Safety Protection
  Once hydraulic hose cracks or oil pipe breaks, the counterbalance valve will instantly close oil channel to lock cylinder, prevent safety accidents caused by load free fall.

• Hydraulic System Shock Absorption
  Built-in damping buffer structure reduces hydraulic impact pressure during crane start and stop, protect hydraulic pump, cylinder and other core hydraulic spare parts from damage.

• Stable Back Pressure Regulation
  Standard factory preset cracking pressure fits XCA100 original hydraulic system, no extra adjustment required after direct replacement installation.

3. Complete Technical Specification Table of Part 803000776

4. Key Advantages of Our XCMG Crane Hydraulic Spare Parts

• Genuine OEM Matching Standard: All dimensions, pressure parameters and interface fully consistent with original XCMG 803000776 valve, plug-and-play without modification.

• Strict Quality Inspection: Every counterbalance valve undergoes 100% pressure leakage test, flow test and fatigue cycle test before warehouse delivery.

• High Durability Structure: Precision grinding valve core, wear-resistant alloy valve seat, adapt to long-hour heavy load construction site working environment.

• Complete After-sales Support: Support factory inspection, pre-shipment inspection, provide technical guidance for installation and pressure debugging.

• Global Fast Delivery: Complete stock of XCMG hydraulic spare parts, support sea/air freight to Africa, Middle East, Southeast Asia, Russia, Latin America and over 100 countries.

• Custom Service Available: Accept OEM/ODM customized hydraulic valve solution for different XCMG crane models according to customer demand.

5. Compatible XCMG All Terrain Crane Models

Main matching model: XCMG XCA100 100t All Terrain Crane

Compatible extended XCA series: XCA80, XCA120, XCA130, XCA160 (partial hydraulic circuit matching, consult our engineer for confirmation before order)

Related Internal Link: XCMG Crane Hydraulic Pump, Swing Motor & Gear Pump Parts

6. Application Working Scenarios

This 803000776 back pressure counterbalance valve is widely used for all heavy lifting construction projects equipped with XCMG XCA100 all terrain crane:

1. Highway & bridge engineering large component hoisting

2. Urban high-rise building steel structure installation

3. Wind power tower lifting & maintenance

4. Mining area heavy equipment disassembly & transportation

5. Large factory equipment hoisting and relocation

7. Related XCMG Hydraulic Spare Parts (Internal Links)

If you purchase 803000776 counterbalance valve for XCA100 crane, you can match with below hot-selling hydraulic spare parts in our warehouse:

• 803000240 Swing Motor for XCMG All Terrain Crane

• 803069443 Hydraulic Gear Pump Assembly

• 803588834 Air Compressor for XCMG Crane

• XCMG Crane Hydraulic Radiator & Oil Cooler

• XCMG XCA Series Driver Cabin Assembly & Accessories

8. Why Choose Qingdao Top Run International Trade Co., Ltd.

We are a professional leading supplier of XCMG, SANY, ZOOMLION, SHANTUI construction machinery spare parts with more than 15 years experience, covering over 10,000㎡ warehouse and 80+ professional employees.

• Rich inventory of XCMG original and OEM hydraulic spare parts including counterbalance valve, hydraulic pump, motor, radiator, undercarriage parts, engine parts.

• Strict quality control system with industry-leading testing equipment to guarantee stable product quality.

• Global marketing network covering 100+ countries, efficient one-stop purchasing service for overseas crane maintenance dealers.

• Support factory visiting, goods inspection before shipment, full technical discussion and new product R&D cooperation.

• Complete after-sales service system, timely response for spare parts matching and installation technical support.

9. Order & Packing & Global Shipping Service

Packing Standard

• Small hydraulic valve: Independent plastic anti-rust packaging + export wooden case, avoid collision damage during long-distance sea transportation.

• Bulk mixed spare parts: Standard fumigation wooden pallet packaging, with waterproof film wrapping.

Shipping Support

We provide flexible logistics solution including sea freight, air freight, express delivery. Our customers are distributed in Middle East, Africa, Southeast Asia, Russia, Latin America and South Asia. You can contact our sales engineer Bonnie to confirm the best shipping plan and delivery cycle.

Contact Information

Sales Person: Bonnie
Mobile / WhatsApp / WeChat: +86 15275228746
Business Email: Bonnie@toprunsparepart.com
Official Website: https://www.toprunparts.com/

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