527-1721 527-1720 Excavator E323 320 340 320GC 336GC 330GC C7.1 C4.4 C9.3B Engine Auxiliary Overflow Valve Pressure Relief Valve

527-1721 527-1720 Excavator E323 320 340 320GC 336GC 330GC C7.1 C4.4 C9.3B Engine Auxiliary Overflow Valve Pressure Relief 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 relief valve is compatible with E320/E323/E340/320GC/336GC models and is a core pressure control component for excavator hydraulic systems. It is fully adaptable to high-load operating scenarios such as mining, earthmoving, and hydraulic breakers.

1. Made of high-strength alloy steel with precision machining, the internal valve core undergoes high-precision grinding, and the sealing components are made of oil-resistant and wear-resistant materials.

2. It can precisely regulate the working pressure of the hydraulic system, quickly relieve pressure in case of overload, effectively protecting key hydraulic components such as the main pump and distribution valve, and preventing high-pressure pipe bursts and valve damage.

3. Compatible with multiple mainstream excavator models, it offers sensitive and stable pressure regulation, is shock-resistant and fatigue-resistant, and is not prone to pressure drift or internal leakage under long-term heavy-load conditions, making it the preferred replacement part for excavator hydraulic systems.

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.