GVO 702-77-02700 702-77-02170 Rotary Motor Relief Valve Pressure Relief Valve Safety Valve PC300 PC400 Excavator Parts

GVO 702-77-02700 702-77-02170 Rotary Motor Relief Valve Pressure Relief Valve Safety Valve PC300 PC400 Excavator Parts

Product Description

The GVO excavator relief valve, compatible with PC300 PC400 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 relief valve, designed for PC300 and PC400 excavators, is the main pressure safety valve at the core of 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 output power of the excavation, the smoothness of compound actions, and the safe and stable operation of the entire hydraulic circuit.

The PC300 is a main model for medium and large-scale engineering projects, widely used in earthwork excavation, site leveling, and infrastructure construction scenarios. The PC400 is a classic large-tonnage mining excavator, mainly used for rock removal, heavy-load loading, and hard rock crushing in high-load working conditions. During equipment operation, the hydraulic system continuously withstands frequent alternating pressure impacts. The performance of the relief valve directly affects the overall operation efficiency of the machine, and at the same time protects high-value hydraulic components such as the main pump, cylinders, and slewing motors, preventing permanent damage caused by overpressure impacts.

This relief valve is precisely manufactured according to the original vehicle valve component drawings and parameters. The thread specifications, outer diameter of the valve stem, oil hole positions, and sealing groove dimensions all conform to the original factory standards. It can be directly installed into the valve holes of the distribution valve to achieve a lossless replacement without the need for additional drilling, grinding, or machining repair. The disassembly and assembly are simple and convenient, perfectly matching the original vehicle hydraulic parameters of PC300 and PC400, providing stable and reliable overpressure protection for the entire hydraulic system.

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.