723-40-71800 7234071800 723-40-71900 Pressure Relief Valve Pressure Reducing

Product Specification

723-40-71800 7234071800 723-40-71900 Pressure Relief Valve Pressure Reducing Valve pilot Valve PC200 PC300 PC400 Excavator Parts

Product Description

The GVO excavator relief valve, compatible with PC200 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 overflow valve assembly is compatible with PC200, PC300, and PC400 series excavators. It is the core main pressure control valve in the distribution valve hydraulic system and is commonly known as the main gun in the industry. It is responsible for regulating the hydraulic system pressure and providing overload safety protection for the entire machine. It is widely used in various complex construction scenarios such as earth excavation, mining stripping, old building demolition, infrastructure backfilling, and heavy-duty excavation. 

The valve block body is made of high-strength alloy steel and processed by CNC precision machining. It undergoes multiple processes including milling, drilling, and internal flow channel honing. The inner oil passage of the valve block has a high smoothness, allowing the oil to flow smoothly, effectively reducing fluid resistance and minimizing unnecessary pressure loss, thereby improving the overall efficiency of the hydraulic system. The internal valve core component is made of high-quality alloy steel and undergoes quenching and tempering heat treatment to enhance the overall hardness, impact resistance, and fatigue resistance of the valve core, enabling it to withstand high-pressure oil impact from different tonnage models frequently and significantly. The valve core mating sealing surface undergoes high-precision grinding processing, ensuring the valve core's smooth reciprocating motion. This reduces the probability of common faults such as valve sticking, valve core sluggishness, and carding. The sealing position of the valve port is precisely processed with strict accuracy, capable of withstanding the continuous erosion of high-flow and high-pressure oil. The sealing performance is stable and long-lasting. The entire set of sealing components is made of high-performance sealing materials that are resistant to high pressure, resistant to hydraulic oil corrosion, and resistant to high and low temperature aging. This minimizes internal leakage and external oil leakage problems and fully adapts to the harsh working environment on construction sites with high dust, significant oil temperature fluctuations, and the presence of impurity particles in the hydraulic oil.

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.