GVO 702-77-02150 Rotary Motor Relief Valve Pressure Relief Valve Safety Valve

Product Specification

GVO 702-77-02150 Rotary Motor Relief Valve Pressure Relief Valve Safety Valve PC300 PC350 PC400 PC450 PC460 Excavator Parts

Product Description

The GVO excavator relief valve, compatible with PC300 PC350 PC400 PC450 PC460 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

This overflow valve, which is compatible with Komatsu's PC300, PC350, PC400, PC450, and PC460 excavators, is the core main pressure safety valve in the multi-way distribution valve assembly. It is also known as the main gun in the maintenance industry, responsible for controlling the maximum working pressure of the entire hydraulic system. It directly determines the digging force, the smoothness of compound actions, and the operational safety of the entire hydraulic circuit.

The valve body base material is made of high-quality high-strength alloy steel, which is formed by a single-piece processing on a high-precision CNC lathe. The core components such as the valve core and valve seat undergo quenching and heat treatment as well as ultra-precise mirror surface grinding processes, significantly enhancing the surface hardness of the parts and strengthening the anti-wear and anti-fracture performance. This can effectively resist abrasive wear caused by internal impurity particles in the hydraulic oil, reducing the occurrence probability of valve core sticking, seal surface scratching, etc. The valve is equipped with a high-performance sealing kit that is resistant to high pressure and oil temperature aging, which can adapt to the drastic oil temperature fluctuations caused by long-term continuous heavy-load operations of large-tonnage excavators. Under repeated pressure shock conditions, it effectively prevents external leakage of oil, internal pressure relief, and pressure fluctuation problems.

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.