709-90-71600 Pressure Relief Valve Lift Valve Hydraulic Safety Valve PC600 PC800

Product Specification

709-90-71600 Pressure Relief Valve Lift Valve Hydraulic Safety Valve PC600 PC800 PC1100 PC1250 PC1800 Excavator Mechanical Parts

Product Description

The GVO excavator relief valve, compatible with PC600 PC800 PC1100 PC1250 PC1800 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 is specially developed for the hydraulic systems of large-tonnage excavators such as PC600, PC800, PC1100, PC1250, and PC1800. It is a core pressure protection component in the main control valve assembly.

The valve body is made by one-piece processing from high-strength alloy steel. It undergoes precise quenching and grinding treatment, and the clearance between the valve core is strictly controlled. It can withstand high-pressure impacts and wear, and can operate stably under heavy-load and continuous-impact mining conditions. It is responsible for limiting the maximum pressure of the hydraulic circuit. When the system load exceeds the limit, it quickly releases pressure to protect expensive hydraulic components such as hydraulic pumps, distribution valves, and cylinders, preventing overloading burst pipes and component tearing and damage.

The sealing components are resistant to high-temperature hydraulic oil and do not age or leak easily. They have stable pressure response under both cold and hot engine conditions, effectively solving common problems in large-scale mining, such as unstable pressure, weak actions, stuck vehicles, and abnormal overflow sounds. It is suitable for mining, quarrying, and large-scale earthwork heavy-load operation scenarios. Replacing the original overflow valve with this one, the installation matching is high, and no additional modifications to the piping are required.

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.