723-10-12300 723-20-64200 Auxiliary Valve Pressure Relief Valve Hydraulic Safety Valve PC30 PC40 PC45 PC50 PC55 Excavator Parts

723-10-12300 723-20-64200 Auxiliary Valve Pressure Relief Valve Hydraulic Safety Valve PC30 PC40 PC45 PC50 PC55 Excavator Parts

Product Description

The GVO excavator relief valve, compatible with PC30 PC40 PC45 PC50 PC55 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 PC30, PC40, PC45, PC50, and PC55 mini and small-sized excavators, is a crucial pressure control plug-in valve on the main control distribution valve. It is mainly responsible for limiting the maximum working pressure of the entire hydraulic system of the machine, establishing a reliable overload protection barrier for the entire hydraulic circuit of the mini excavator. The PC30-PC55 series of mini excavators are widely used in landscaping, municipal renovation, indoor demolition, farmland water conservancy, and narrow construction sites, where the working space is narrow, frequent starting and stopping, repeated digging and lifting of the arm, and often is selected for crushing operations. The hydraulic circuit will continuously withstand frequent fluctuating instantaneous high-pressure impacts.

The valve body of this overflow valve is forged from high-strength alloy steel and undergoes quenching and tempering treatment. The overall strength of the valve body is sufficient and can withstand the high-pressure hydraulic oil erosion brought by the frequent operation of the mini excavator. The valve core and valve seat are processed by high-precision matching grinding technology to achieve a micron-level precise clearance, ensuring that the opening response is sensitive and rapid during overload relief, while remaining tightly closed under normal operation of the equipment, minimizing internal leakage and avoiding power loss caused by premature overflow.

The working surface of the valve core is strengthened for wear resistance, which can withstand the erosion and scratching of fine impurity particles in the hydraulic oil, reducing valve core sticking faults and effectively extending the service life of the components. The entire sealing assembly uses high-pressure-resistant and oil-corrosion-resistant high-quality sealing gaskets, which are suitable for a wide range of working temperatures of the mini excavator. They do not age or soften in high-temperature environments and do not harden or crack in low-temperature conditions, effectively preventing oil leakage from the valve body and internal oil leakage, and perfectly adapting to the complex working environment with much dust and inconsistent oil quality on construction sites.

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.