GVO 4396776 4608478 Auxiliary Relief Valve Pressure Relief Valve Hydraulic

Product Specification

GVO 4396776 4608478 Auxiliary Relief Valve Pressure Relief Valve Hydraulic Safety Valve ZAX70 ZAX80 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

GVO offers a long-term, readily available supply of ZAX70 and ZAX80 relief valves, compatible with Hitachi's popular 7-ton and 8-ton mini excavators. Sufficient stock is available to support bulk orders. Our products strictly replicate original factory processing standards; each relief valve undergoes high-pressure testing on a hydraulic bench before leaving the factory, eliminating defective products with jamming, pressure leakage, or other issues, ensuring consistent quality.

1. Dual-model compatibility, non-destructive replacement for original equipment. Precisely compatible with Hitachi ZAX70 and ZAX80 mini excavators, with overall dimensions, thread pitch, and oil outlet positions identical to original parts. Easy to install and repair.

2. Precision valve core, stable pressure regulation without drift. The micron-level precision-machined valve core ensures uniform and linear spring return, maintaining continuous pressure even under high-intensity operation with the hydraulic breaker. Smooth operation with no fluctuating pressure or sluggish movement.

3. High-strength valve body, durable and robust for harsh working conditions. The alloy steel hardened valve body, combined with a thickened oil-resistant seal, resists dust and mud erosion, and is resistant to high and low temperatures and continuous high pressure. It is not prone to oil leakage and pressure loss during long-term use.

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.