GVO 706-77-76701 Rotary Motor Relief Valve Pressure Relief Valve Safety Valve PC300-5 PC400-5 Excavator Mechanical Parts

GVO 706-77-76701 Rotary Motor Relief Valve Pressure Relief Valve Safety Valve PC300-5 PC400-5 Excavator Mechanical Parts

Product Description

The GVO excavator relief valve, compatible with PC300-5 PC400-5 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, designed for PC300-5 and PC400-5 excavators, is a crucial main pressure safety valve within the multi-way distribution valve assembly. It is also known in the maintenance industry as the main gun, responsible for limiting the maximum working pressure of the entire hydraulic system of the machine. It directly determines the power output of the excavation, 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. It is formed through a high-precision CNC lathe for integrated precision processing. The core mating pair of the valve core and valve seat adopts quenching and heat treatment combined with ultra-precise mirror surface grinding technology, significantly enhancing the surface hardness of the parts, strengthening wear resistance and anti-fracture performance, effectively resisting abrasive wear caused by impurities in the hydraulic oil of old equipment, and reducing the probability of common faults such as valve core sticking and sealing surface scratching. The valve components are assembled with high-pressure and aging-resistant high-quality sealing components, which can adapt to the large range of oil temperature fluctuations caused by long-term continuous heavy-load operations of old models. Under repeated pressure shock conditions, it effectively prevents oil leakage from the valve body, internal pressure leakage, and other 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.