60221666 Overflow valve Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

60221666 Overflow valve Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The Sany 60221666 relief valve is a core pressure control component in the hydraulic system of Sany construction machinery. It is specifically designed for critical components such as hydraulic pumps and hydraulic pipelines. Its core function is to provide constant pressure relief and pressure stabilization, preventing damage to core components such as hydraulic pumps and oil pipes due to excessive system pressure. It plays a crucial role in pressure stabilization, safety protection, and unloading. It is compatible with Sany and various mainstream construction machinery and is widely used in excavators, crawler cranes, loaders, and other models. It is suitable for harsh working conditions such as mining and infrastructure construction and is the preferred component for aftermarket maintenance, parts wholesale, and foreign trade export.
This relief valve relies on professional valve manufacturing technology and strict quality control, using high-quality alloy materials. The valve body cavity is optimized through CFD fluid dynamics design, and it is equipped with PTFE seals. Through precision casting, CNC machining, polishing, and sealing reinforcement treatment, it achieves precise dimensions without burrs, and a surface hardness of HRC55-60. It possesses excellent corrosion resistance, impact resistance, and sealing performance, allowing for precise adjustment of system pressure, controlling pressure fluctuations within a reasonable range, and quickly responding to pressure changes to achieve overflow unloading. This solves pain points such as valve jamming, seal failure, and inaccurate pressure regulation, extending the overall service life of the equipment and making it suitable for long-term, harsh operating conditions. It adopts a pilot-operated structure design, with an internal pressure regulating spring and precision cone valve assembly. The reasonable component layout and compact structure allow for precise pressure regulation without complex operations. It ensures stable hydraulic system pressure and rapid overflow unloading in case of system overpressure. It also has excellent sealing performance to prevent media leakage and external impurities from entering. It precisely matches the installation position, fits tightly, and is easy to assemble, balancing pressure regulation accuracy and adaptability.

Core technical parameters:

– Product Model: 60221666
-Product Name: Overflow Valve
– Compatible Brands/Models: Sany, excavators, crawler cranes, loaders, etc. (can accurately match specific models)
– Material: High-quality alloy (valve body), PTFE seals, corrosion-resistant and aging-resistant.
– Structure type: Pilot-operated structure, including pressure regulating spring and cone valve assembly, compact structure and precise pressure regulation.
– Surface hardness: HRC55-60, excellent corrosion resistance, impact resistance, and sealing performance.
– Machining process: Precision casting, CNC machining, polishing, and sealing reinforcement treatment, ensuring dimensional accuracy and burr-free operation.
– Accuracy class: GB/T 10095.1-2008 Class 7
– Core dimensions: Nominal diameter 32mm, valve body length 78mm, inlet/outlet port diameter 40mm
– Voltage regulation range: 1.5MPa~16MPa, voltage regulation deviation ≤±1%, precise and controllable.
– Maximum working pressure: 20MPa, capable of withstanding high-pressure conditions.
– Operating temperature: -40℃~150℃, suitable for harsh environments with high and low temperatures.
– Service life: ≥10,000 hours (normal operating conditions), with over 1 million opening and closing cycles.
– Execution Standard: GB/T 3077-2015, ISO International Certification, Quality Guaranteed
– Weight: 0.78kg, adaptable to equipment installation load, compact structure

The Sany 60221666 relief valve, made with high-quality materials, precision manufacturing, and accurate parameters, is suitable for the repair and replacement of hydraulic systems in various engineering machinery, meeting the needs of foreign trade, wholesale, and modification. The product undergoes rigorous testing and is free of defects such as air holes and sand holes. It is easy to install, wear-resistant, and durable. It is compatible with hydraulic pumps, hydraulic lines, and other components, enhancing pressure stabilization, load relief, and safety protection, reducing downtime losses, improving operational continuity, and balancing cost-effectiveness and reliability.

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1 60221656 O-ring
2 60100467 Blocked
3 60221657 O-ring
4 60008711 Blocked
5 60221664 Blocked
6 60196562 Blocked
7 60221658 O-ring
8 60221650 Socket headstock bolt
9 60221654 Rolling bearing
10 60221651 Clamp
11 60008753 Anti-reverse valve
12 60100516 O-ring
13 60039351 Piston H2
14 60221666 Overflow valve
15 60081437 Spring
16 60039401 Oil plug
17 60221662 Friction Plate
18 60221661 O-ring
19 150201010091A010 Valve cover assembly
20 60039405 Brake Spring

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