GVO 25/618901 25/929310 Excavator JC-B 3CXC 3CX 4CX444 4CN444 Main Relief Valve Pressure Relief Valve Safety Valve

GVO 25/618901 25/929310 Excavator JC-B 3CXC 3CX 4CX444 4CN444 Main Relief Valve Pressure Relief Valve Safety Valve

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 model 923G1 4V28-0 cartridge relief valve is specifically designed for use with the backhoes of JCB 3CX, 3CXC, and 4CX444 backhoe loaders. It is a core hydraulic component for stabilizing pressure and providing overload buffering protection for the entire vehicle's hydraulic system.

It features a mirror-finish precision valve core for continuous pressure locking under heavy loads. The high-precision ground valve core, combined with a balanced pressure-stabilizing spring, ensures stable pressure during breaking and heavy-duty loading operations, preventing inconsistent pressure and vibrations, resulting in a smooth and linear operating feel.

The tempered alloy steel valve body is durable and resistant to harsh working conditions. The thickened, hardened valve body, combined with multi-layer high-pressure resistant seals, resists mud and dust corrosion and is less prone to oil leakage and pressure loss under high and low temperature cyclic high-pressure conditions.

It features automatic overload unloading and comprehensive hydraulic component protection. The hydraulic circuit provides instantaneous buffering and pressure relief during overloads, preventing damage to the hydraulic pump, multi-way valve, and cylinders from high-pressure bursts. It effectively solves three common problems: engine stalling, boom drop during lifting, and insufficient loading power, reducing major overhaul costs.

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.