GVO 25/222659 25/618901 Main Relief Valve Pressure Relief Valve Hydraulic Safety

Product Specification

GVO 25/222659 25/618901 Main Relief Valve Pressure Relief Valve Hydraulic Safety Valve JC-B 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 model 25/222659 and 25/618901 cartridge-type relief valve is a core pressure protection component of the hydraulic system in JCB mini excavators, responsible for stabilizing the hydraulic oil circuit and providing overload buffering protection.

The valve body is made of high-strength alloy steel, forged and tempered, with a polished and rust-proof surface, resistant to high pressure and impact. The internal valve core uses a micron-level mirror-polished process, paired with an oil-resistant and aging-resistant fluororubber sealing ring. It is resistant to valve core jamming and internal oil leakage during long-term heavy-duty earthmoving, crushing, and landscaping operations. When the excavation load exceeds the limit, the valve instantly releases pressure to buffer and offset high-pressure impacts, providing comprehensive protection for the hydraulic main pump, multi-way distribution valve, and boom and arm cylinders. This effectively solves common maintenance problems such as weak excavation power, engine stalling, boom sinking, movement sluggishness, abnormal hydraulic oil temperature rise, and pressure drift.

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.