GVO 52090420-1192 60075578K Auxiliary Relief Valve Control Valve Pressure Relief

Product Specification

GVO 52090420-1192 60075578K Auxiliary Relief Valve Control Valve Pressure Relief Valve Safety Valve SY365 SY500H Excavator Parts

Product Description

The GVO excavator relief valve, compatible with Hitachi 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

The GVO relief valve is perfectly compatible with the hydraulic distribution systems of SANY SY365 and SY500H excavators. As a key pressure control component in the overall hydraulic circuit, it is precision-machined according to strict specifications. The thread dimensions, oil hole layout, valve core stroke, and rated opening pressure are completely identical to the original parts, supporting direct insert replacement without modifying the valve block structure, significantly reducing maintenance and assembly difficulty.

The main body of the product is forged from high-strength alloy steel. The valve core friction pair undergoes quenching hardening and high-precision honing treatment, precisely controlling the fitting clearance. Under continuous high pressure, high flow, and heavy load conditions, it effectively suppresses internal leakage, stably locks the system's standard oil pressure, and specifically addresses common SY365 and SY500H malfunctions such as pressure drop under heavy load, insufficient digging force, slow boom lifting, overflow noise, and jamming during complex movements.

The valve is equipped with high-pressure resistant and oil corrosion-resistant high-performance sealing components to resist continuous corrosion from high-temperature hydraulic oil, effectively preventing oil leakage from the valve body and aging seals. At the same time, the internal flow channel structure is optimized to improve the anti-pollution ability, reduce the risk of valve core jamming and valve failure caused by impurities in hydraulic oil, reduce sudden equipment shutdown and maintenance, ensure continuous construction of engineering projects, and avoid economic losses caused by work stoppages.

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.