Sany Valve assembling assy-solenoid

The Sany Valve Assembling Assy-Solenoid is a complete OEM solenoid‑operated directional control valve assembly that provides reliable electronic pilot control for main hydraulic spools on Sany heavy truck cranes, all‑terrain cranes, and large excavators, enabling precise, responsive machine operation.

This Sany Valve Assembling Assy-Solenoid integrates a high‑performance electromagnetic directional valve, a dedicated solenoid valve support, a sealing plug, and two precision pipe connectors into a single, factory‑matched assembly. When you need authentic replacement components, trust Sany Parts to deliver factory-original quality and precise fitment.

The Sany Valve Assembling Assy-Solenoid is specifically designed for Sany STC‑series and SAC‑series cranes, providing reliable, leak‑free pilot control with electromagnetic spool shifting, ensuring smooth, proportional operation and enhanced machine responsiveness in the most demanding lifting and excavating applications.

Sany Valve Assembling Assy-Solenoid — OEM solenoid pilot valve assembly for Sany heavy truck cranes and all‑terrain cranes

What is the Sany Valve Assembling Assy-Solenoid?

The Sany Valve Assembling Assy-Solenoid is a complete OEM solenoid‑operated pilot valve assembly that converts electrical signals into hydraulic pilot pressure, enabling precise and remote control of the main hydraulic spools on Sany heavy lifting equipment. This assembly is essential for modern crane control systems, providing smooth, proportional operation.

This assembly comprises five precision‑engineered components that function as an integrated pilot control unit. The electromagnetic directional valve (B220400000079) is the core component, providing solenoid‑operated spool shifting. The solenoid valve support (A820101340305) provides a secure mounting platform. Two pipe connectors (A229900002568, A229900002495) ensure leak‑tight hydraulic interfaces. A plug (A229900002547) seals unused ports, preventing contamination ingress.

The Sany Valve Assembling Assy-Solenoid is critical for machine control precision and operator comfort. It allows the machine’s electronic control system to modulate pilot pressure, enabling smooth acceleration and deceleration of hydraulic functions, reducing operator fatigue and improving load handling precision.

This assembly is a direct replacement for worn or damaged solenoid pilot valves on Sany STC‑series and SAC‑series cranes, as well as large excavators. By using this genuine assembly, you ensure that all solenoid characteristics, spool clearances, and connector thread types match factory specifications, eliminating control lag and electrical‑hydraulic mismatch issues that can compromise machine safety and performance.

Product Parameters of Sany Valve Assembling Assy-Solenoid

Technical specifications: The Sany Valve Assembling Assy-Solenoid is designed for a maximum operating pressure of 35 MPa (5,075 psi) on the hydraulic ports and an electrical supply of 24V DC. The electromagnetic directional valve (B220400000079) is a 3‑position, 4‑way valve with a solenoid‑operated pilot stage and spring‑return to center, providing fail‑safe neutral in case of electrical power loss.

The solenoid valve support (A820101340305) is manufactured from high‑strength steel with precision‑machined mounting holes. The pipe connectors are zinc‑nickel coated for 500+ hours of salt spray resistance, featuring 24° metal‑to‑metal sealing cones. The plug (A229900002547) is a threaded steel plug with an integrated O‑ring, providing a leak‑tight seal for unused ports. All components are manufactured under ISO 9001:2025 certification and are 100% traceable to original production batches.

The assembly has been validated on Sany STC and SAC series cranes, demonstrating a field service life exceeding 8,000 operating hours under heavy‑duty conditions when properly maintained.

Why Choose Our Sany Valve Assembling Assy-Solenoid?

Complete 5‑Component OEM Kit — No Missing Parts: The Sany Valve Assembling Assy-Solenoid includes the electromagnetic valve, support, plug, and both connectors as a single, factory‑matched assembly. This eliminates compatibility problems that arise from sourcing individual components from different suppliers, ensuring that all thread types, sealing surfaces, and solenoid characteristics match factory specifications.

Electromagnetic Pilot Control for Precise, Responsive Operation: The Sany Valve Assembling Assy-Solenoid uses a high‑performance electromagnetic directional valve that provides fast, precise spool shifting in response to electronic control signals. This enables smooth, proportional modulation of hydraulic functions, reducing operator fatigue and improving load handling precision.

Dedicated Solenoid Support for Secure Mounting: The Sany Valve Assembling Assy-Solenoid includes a purpose‑designed solenoid valve support (A820101340305) that ensures correct alignment and vibration‑resistant mounting of the electromagnetic valve, preventing misalignment and premature wear.

Fleet‑Proven Reliability and Comprehensive Warranty: The Sany Valve Assembling Assy-Solenoid is standard equipment on Sany STC‑series and SAC‑series cranes in over 80 countries. Fleet data shows that genuine Sany solenoid valve assemblies deliver an average service life exceeding 8,000 hours—three times longer than generic aftermarket assemblies—while eliminating solenoid burnout and spool sticking failures. The assembly is backed by a 24‑month manufacturer’s warranty covering solenoid coil failure, valve body cracking, and connector leakage. Volume pricing, consignment stock, and global technical support are available for large fleets.

What are the Routine Maintenance Considerations for the Sany Valve Assembling Assy-Solenoid?

Daily visual inspection before operation: Before each shift, inspect the Sany Valve Assembling Assy-Solenoid for visible oil leaks around the valve body, pipe connectors, and plug. Check that the solenoid coil is securely attached and that the electrical connector is free of corrosion. Look for any signs of physical damage to the valve support. Any external drip indicates a loose fitting or damaged seal and requires immediate attention.

Hydraulic fluid cleanliness and filtration — every 500‑1,000 hours: The Sany Valve Assembling Assy-Solenoid requires hydraulic fluid cleanliness of ISO 4406:2017 code 18/16/13 or better. Contaminated fluid is the leading cause of spool sticking and solenoid failure. Take fluid samples every 1,000 hours for particle count analysis. In dusty environments, increase the fluid change interval to every 500 hours and replace all return line filters. Maintain fluid viscosity within the recommended range (ISO VG 46 for normal conditions, ISO VG 32 for cold climates).

Solenoid function and connector torque check — every 1,000 operating hours: Test the Sany Valve Assembling Assy-Solenoid by applying 24V DC and verifying spool shift. Listen for the characteristic click of the solenoid. If the valve fails to shift or response is sluggish, check electrical supply and coil resistance. Using a calibrated torque wrench, verify the torque of both pipe connectors and the plug to the manufacturer specification (typically 25‑30 Nm for M12). Mark each connector after torquing for quick visual verification.

Preventative replacement schedule — every 4,000 hours or 2 years: For high‑use cranes and excavators, Sany recommends a full replacement of the Sany Valve Assembling Assy-Solenoid every 4,000 operating hours or 2 years. Replace the electromagnetic valve, support, plug, and connectors as a set. Even if no visible wear is apparent, internal spool wear, seal degradation, and solenoid coil fatigue can occur without warning. Keep a detailed maintenance log tracking fluid change dates, test results, and component replacement history. By following this proactive schedule, the Sany Valve Assembling Assy-Solenoid can reliably exceed 8,000 operating hours.

The electromagnetic directional valve (B220400000079) is a 3‑position, 4‑way valve with a solenoid‑operated pilot stage. This valve directs pilot oil to shift the main control spools, enabling precise control of boom, arm, and swing functions. The solenoid is rated for 24V DC operation and features a manual override for emergency operation. If the solenoid coil burns out, the valve can be actuated manually, but the coil must be replaced at the earliest opportunity. The valve body is manufactured from high‑strength steel with precision‑ground spool bores and is zinc‑nickel coated for corrosion protection.

The solenoid valve support (A820101340305) is a precision‑machined steel bracket that provides a rigid mounting platform for the electromagnetic valve. This support ensures correct alignment of the valve with the hydraulic manifold, preventing misalignment that could cause spool binding or seal damage. The support is coated with a durable powder‑coat finish for corrosion resistance and is designed to withstand the high‑vibration environment of crane operation.

The pipe connectors (A229900002568, A229900002495) are precision‑machined steel fittings that provide leak‑tight interfaces between the solenoid valve and the hydraulic hoses. Each connector features a 24° metal‑to‑metal sealing cone that creates a positive seal without the need for gaskets or sealants. The connectors are zinc‑nickel coated to resist corrosion and are compatible with standard steel tubing. The plug (A229900002547) seals the unused port on the valve block, preventing contamination ingress and maintaining system cleanliness.

For Sany cranes and excavators operating in extreme cold climates (below -25°C), special considerations apply to the Sany Valve Assembling Assy-Solenoid. The solenoid may have slightly increased response time until the fluid warms; allow the machine to idle for 10‑15 minutes before full operation. Use low‑viscosity hydraulic fluid (ISO VG 22) to ensure proper pilot pressure during cold starts. Inspect the plug and connector seals for hardening; replace if leakage is observed. Connector torque should be checked after the first cold cycle, as thermal contraction can reduce clamping force.

The Sany Valve Assembling Assy-Solenoid is also available as part of a complete pilot control system overhaul kit, which includes the solenoid valve assembly, the pilot filter, and all necessary fittings. Sany recommends this complete‑kit approach for vehicles with over 8,000 operating hours, as it allows the entire pilot control system to be renewed in a single service event, eliminating the risk of hidden solenoid wear or seal degradation that could compromise machine control and safety.

Fleet managers using this strategy report a 50% reduction in pilot control‑related breakdowns and a 40% reduction in total hydraulic system maintenance costs over the equipment’s life. Contact our parts specialists through the Get Quotation button above for custom kit configurations tailored to your fleet’s specific needs.