723-40-71102 723-40-71800 723-40-71900 Pressure Relief Valve Pressure Reducing Valve PC200-7-8 PC220-8 PC400-7 PC400-8 Excavator

723-40-71102 723-40-71800 723-40-71900 Pressure Relief Valve Pressure Reducing Valve PC200-7-8 PC220-8 PC400-7 PC400-8 Excavator

Product Description

The GVO excavator relief valve, compatible with PC200-7-8 PC220-8 PC400-7 PC400-8  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 PC200-7, PC200-8, PC220-8, PC400-7, and PC400-8 excavators. It is a main pressure control valve in the distribution valve hydraulic circuit, also known as the main gun in the industry. It is a core precision component for the overall hydraulic system of the machine to achieve pressure limitation and overload safety protection. This group of models covers medium-tonnage to heavy-tonnage main models, and has a huge market share in domestic and international engineering markets. It is widely used in various complex operation scenarios such as urban infrastructure, earthwork excavation, mining stripping, river regulation, demolition and crushing, large-scale earth and rock engineering, etc.

The valve block body is made of high-strength alloy steel and undergoes multiple precision processing techniques such as CNC precision milling, drilling, and internal flow channel honing. The inner oil passage wall of the valve block is smooth and clean, effectively reducing the resistance of oil flow 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 significantly enhance the hardness, impact resistance, and fatigue resistance of the valve core, enabling it to withstand frequent changes in high-pressure oil from different tonnage models during operation. The sealing surface of the valve core and the mating surface are processed by high-precision grinding technology. The valve core reciprocates flexibly and smoothly, significantly reducing the occurrence probability of common faults such as valve sticking, valve core sluggishness, and jamming. The processing accuracy of the valve port sealing position is strict, and it can withstand continuous erosion by high-flow and high-pressure oil. The sealing performance is durable and reliable. The entire set of sealing accessories is made of high-performance sealing components 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 large amounts of dust, large fluctuations in oil temperature, 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.