GVO 25/618901 25/618902 Main Relief Valve Pressure Relief Valve Hydraulic Safety

Product Specification

GVO 25/618901 25/618902 Main Relief Valve Pressure Relief Valve Hydraulic Safety Valve Jc-b 3CX 4CX 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 cartridge relief valve is specifically designed for use with JCB 3CX and 4CX backhoe loaders/excavators. It's a core hydraulic component for pressure stabilization and overload protection in the vehicle's hydraulic system, corresponding to part numbers 25/222659 and 25/618901, perfectly compatible with the entire 3CX and 4CX series.

The valve body is made of 40Cr alloy steel, forged and tempered, with a mirror-polished finish for rust and wear resistance, capable of withstanding long-term continuous high-pressure impacts.

The internal valve core is ground with micron-level high precision and equipped with oil-resistant and aging-resistant fluororubber sealing kits. Under conditions of sand, mud, water, and alternating high and low temperatures on construction sites, it is less prone to valve core jamming, internal oil leakage, and pressure drop.

When the hydraulic circuit is overloaded during operation, the valve can instantly buffer and release pressure, greatly reducing the damage of high pressure impact to the hydraulic pump, multi-way distribution valve, lifting cylinder, and digging cylinder. This effectively solves common problems in 3CX/4CX such as weak shoveling, digging stall, boom lifting and sinking, motion jamming, hydraulic oil temperature soaring, and unstable system pressure.

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.