87610350 87570539 Pressure Relief Valve Control Valve Hydraulic Safety Valve U80C C185 L180 L190 U80C LT185.B LT190.B Excavator

87610350 87570539 Pressure Relief Valve Control Valve Hydraulic Safety Valve U80C C185 L180 L190 U80C LT185.B LT190.B Excavator

Product Description

The GVO excavator relief valve, compatible with U80C C185 L180 L190 U80C 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 plug-in relief valve is specially designed for the high-intensity construction work conditions of excavators. It is responsible for the core functions of the hydraulic system, such as pressure regulation, pressure stabilization, and overload relief and overload discharge. The valve body is made of high-strength alloy steel and undergoes overall heat treatment for enhanced strength, resistance to impact, and fatigue. It can adapt to frequent alternating pressure environments. The valve core is precisely ground, ensuring high sealing and mating accuracy, with sensitive pressure response and crisp opening and reseating actions. During operation, it is less prone to pressure drift, vibration, and abnormal noises, which are common faults. 

The sealing components are resistant to oil and high temperatures. They do not age or deform easily in the presence of high-temperature hydraulic oil, reducing internal and external oil leakage faults. The standardized plug-in thread dimensions are fully compatible with the original vehicle valve holes. During maintenance, the old valve can be directly removed and replaced without modifying the pipeline, significantly reducing the downtime for equipment maintenance. When the system pressure exceeds the set pressure, the valve core quickly opens to release excess flow, preventing system overpressure and safeguarding the entire hydraulic system. It extends the service life of hydraulic pumps, distribution valves, and oil pipes, and is a frequently replaced hydraulic component in excavator maintenance.

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.