GVO 723-30-56100 Main Control Valve Unloading Relief Valve PC100 PC120 PC128US PC128UU PC130 PW130 Excavator Mechanical Parts

GVO 723-30-56100 Main Control Valve Unloading Relief Valve PC100 PC120 PC128US PC128UU PC130 PW130 Excavator Mechanical Parts

Product Description

The GVO excavator relief valve, compatible with PC100 PC120 PC128US 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 PC100, PC120, and PC128US excavators, is an integral plug-in pressure protection component within the main control distribution valve assembly. It is primarily responsible for setting and limiting the maximum working pressure of the entire hydraulic system of the machine, establishing a crucial overload protection barrier for the entire hydraulic circuit. It is a classic model with a large market share in the engineering sector, widely used in various operation scenarios such as earthwork excavation, road construction, urban renovation, river dredging, and narrow-site construction.

The valve body of this overflow valve is formed by a single piece of high-strength alloy steel through complete forging. It undergoes a complete quenching and tempering treatment, ensuring sufficient mechanical strength of the valve body as a whole. It has excellent resistance to impact and high-pressure oil erosion, and can withstand the repeated erosion of high-pressure hydraulic oil under heavy-load operations of medium-sized excavators for a long time. The valve core and valve seat are processed using a high-precision matching grinding method, achieving a precise clearance of micrometer level, which not only ensures the rapid and sensitive opening response of the valve component in overload relief conditions, but also enables it to tightly close under normal operating conditions of the equipment, minimizing internal leakage of the valve component and avoiding unnecessary power loss due to abnormal overflow. The working surface of the valve core is strengthened for wear resistance, which can withstand scratches and erosion caused by metal impurities mixed in the hydraulic oil, effectively reducing the probability of valve core jamming and extending the actual service life of the component.

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.