GVO 21N-60-32211 21N6032211 Hydraulic Valve Pressure Relief Valve Safety Valve HD250 E330C WA470-3 Excavator Mechanical Parts

GVO 21N-60-32211 21N6032211 Hydraulic Valve Pressure Relief Valve Safety Valve HD250 E330C WA470-3 Excavator Mechanical Parts

Product Description

The GVO excavator relief valve, compatible with HD250 E330C WA470-3 excavators, is a key pressure control valve in the hydraulic system. It regulates hydraulic pressure, releases overload pressure, protects core hydraulic components such as the main valve and hydraulic pump, and ensures stable operation of the entire machine.

This relief valve is precision-machined from high-quality steel and undergoes overall quenching treatment. Equipped with oil-resistant and high-pressure-resistant seals, it boasts excellent sealing performance, impact resistance, and wear resistance. Suitable for the high-pressure hydraulic conditions of excavators, it effectively prevents internal leakage, pressure loss, operational instability, and vibration.

Product Introduction

This type of relief valve is suitable for HD250 excavators, E330C excavators, and WA470-3 wheeled loaders. It is a key pressure protection component of the hydraulic distribution valve assembly. During heavy-duty crushing and heavy-load bucket loading operations, the equipment frequently experiences instantaneous high-pressure impacts. The relief valve performs the functions of limiting system pressure and overloading relief, promptly releasing excess pressure in the circuit, protecting the main hydraulic pump, multi-way valve, and working motor, which are the core hydraulic components, from being damaged by high pressure, stabilizing the hydraulic output of the entire machine. It is a commonly used precision hydraulic component in engineering machinery maintenance and major repair projects.

The valve body is machined from high-strength alloy steel, and the valve core is precisely ground and combined, and undergoes quenching and heat treatment for strengthening. It has excellent pressure resistance, impact resistance, and wear resistance. Considering the characteristics of multiple models and large flow conditions, the valve core and valve sleeve mating clearance is strictly controlled, and high-quality high-pressure sealing components are matched to effectively reduce internal leakage and avoid problems such as pressure leakage and oil seepage. It can stably adapt to complex working environments such as construction sites and stone quarries, withstand frequent alternating pressure impacts, effectively extend the service life of the valve components, and reduce unexpected equipment shutdowns.

Packaging & Shipping

We use high-strength, environmentally friendly paper export packaging, which is reinforced, cushioned, and moisture-proof, suitable for long-distance international logistics transportation, and meets cross-border freight and environmental protection standards. International transportation adopts formal cross-border logistics, with full tracking of logistics information and supporting customs clearance documents to ensure smooth customs clearance and timely delivery of goods overseas.

Company Introduction

The GVO brand is a manufacturer of hydraulic components. We mainly produce the most comprehensive range of pilot pumps, gear pumps, relief valves, hydraulic pumps, electrical components, hydraulic parts, engine assemblies, traveling assemblies, rotating assemblies, distribution valves, and other components.

We are factory direct sellers without any middlemen profiting from price differences. The quality is definitely the best for you because we are the ones who produce them. We cannot tarnish our reputation. The prices are also the most favorable for you. There is a stable delivery speed.

We value every customer and provide you with the best service. We offer pre-sale, in-sale, and after-sale guarantees. Any problems will definitely be resolved for you. We are always available to serve you.