60357902 Holding Valve Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

60357902 Holding Valve Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

As a core pressure-holding and locking component in hydraulic systems, the 60357902 holding valve boasts four major advantages: stable pressure holding, tight sealing, fast response, and anti-interference. It is widely used in the hydraulic circuits of construction machinery such as excavators and cranes, undertaking the functions of maintaining system pressure, locking the position of actuators, and fault position protection. Relying on hydraulic control pressure to drive the valve core, it maintains stable circuit pressure under normal conditions. When the system pressure fails or is lost, it automatically cuts off the channel and locks the valve position to prevent actuator displacement and load slippage, avoiding safety hazards. It also has an automatic reset function, quickly restoring normal operation after the fault is cleared. It is easy to install and meets the high-pressure holding requirements of construction machinery.
Compared to ordinary holding valves, this product uses high-quality materials and is precision-machined, strictly adhering to GB/T 24919 and JB/T 10684 standards. The main body is made of 20# forged steel (stainless steel can be customized), the valve core is hardened alloy, and the seals are made of FKM fluororubber. It is manufactured through multiple processes, resulting in a dense and defect-free structure, compact size, low pressure loss, high pressure resistance, wear resistance, and corrosion resistance. It effectively solves problems such as pressure holding failure, pressure leakage, and valve core jamming, reducing equipment maintenance costs. It is suitable for medium and high pressure working conditions, precisely matching the pressure holding and locking requirements of hydraulic circuits in engineering machinery, and balancing safety and practicality.

Core technical parameters:

-Product Model: 60357902
-Product Name: Holding Valve (Hydraulic Control One-Way Type, for Pressure Holding and Locking)
– Compatible models/scenarios: Excavators, cranes, and other construction machinery; hydraulic cylinders and motor control circuits (specifications available for verification).
– Structure type: Hydraulic unidirectional structure with automatic reset function. It automatically locks in case of pressure failure and automatically resumes operation after the failure is cleared. It provides accurate pressure holding and reliable reset.
– Material Specifications: Body: 20# forged steel (304/316L stainless steel can be customized), valve core: hardened alloy, seals: FKM, surface galvanized/passivated for corrosion protection.
– Dimensions: Compatible with DN20 pipes, nominal diameter 20mm, valve body length 102mm, inlet/outlet diameter 20mm, internal thread M56×2, flatness ≤0.005mm, tolerance GB/T 1804-m
– Pressure parameters: Rated pressure PN31.5MPa, maximum pressure 94.5MPa, control pressure 3.5-4.5MPa, pressure error ≤5%, leakage ≤0.01ml/h, response time ≤10ms
-Mechanical parameters: Rockwell hardness HRC42-47, tensile strength ≥550MPa, impact toughness ≥85J/cm², valve core operates flexibly and maintains pressure precisely.
-Environmental parameters: Operating temperature -30℃ to 120℃, adaptable to dusty, oily, and high-vibration conditions, resistant to rust, aging, and hydraulic oil corrosion.
– Processing technology: Precision forging + CNC turning + precision grinding + corrosion protection + pressure adjustment, burr-free surface, precise threads, and pressure holding accuracy meets standards.
-Installation method: Threaded connection, vertical installation, install according to the media flow direction, clean the interface, calibrate the pressure holding threshold during commissioning, and avoid violent installation and overload.
-Quality Standards: Compliant with GB/T 24919 and other standards, fully tested, accompanied by a certificate of conformity, and in compliance with hydraulic system safety regulations.
-Service life: ≥5000 hours under normal operating conditions, ≥3000 hours under high pressure and heavy load, far exceeding that of ordinary aftermarket retaining valves, extending the overall lifespan of the system.

Our 60357902 holding valve undergoes rigorous testing and debugging, ensuring traceable quality and reliable after-sales service. We support bulk purchasing and customization of materials and pressure holding thresholds. It is compatible with various hydraulic circuits of engineering machinery, meeting the requirements for pressure holding, locking, and fault position holding. It is the preferred component for the safe and stable operation of hydraulic systems.

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