GVO 723-40-71103 723-40-71102 Pressure Relief Valve Pressure Reducing Valve pilot Valve PC200-7 PC300-7 PC300-8 Excavator Parts

GVO 723-40-71103 723-40-71102 Pressure Relief Valve Pressure Reducing Valve pilot Valve PC200-7 PC300-7 PC300-8 Excavator Parts

Product Description

The GVO excavator relief valve, compatible with PC200-7 PC300-7 PC300-8 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, PC300-7, and PC300-8 excavators. It is a main pressure control valve in the distribution valve hydraulic system and is a highly precise hydraulic component that controls the overall system pressure and provides overload protection. It plays a crucial role in the entire hydraulic circuit by limiting pressure and providing safety protection.

The valve core assembly is made of high-quality alloy steel and undergoes quenching and tempering heat treatment to enhance the hardness, impact resistance, and fatigue resistance of the valve core. It can withstand the frequent changes in high-pressure oil during operation. The valve core mating sealing surfaces are processed using high-precision grinding technology, ensuring smooth and flexible reciprocating motion of the valve core. This effectively reduces the probability of common faults such as valve sticking, valve core sluggishness, and jamming. The sealing part of the valve port is processed with strict accuracy and can withstand continuous high-pressure oil flushing, maintaining stable sealing performance. 

The entire set of sealing kits is made of high-performance sealing components that are resistant to high pressure, corrosion by hydraulic oil, and aging under high and low temperatures. This minimizes internal leakage and external oil seepage or leakage. It perfectly adapts to the harsh working environment on construction sites with high dust, significant fluctuations in oil temperature, and the presence of impurity particles in the hydraulic oil. The product strictly conforms to the original factory installation reference dimensions. The valve block installation holes, threaded interfaces, and internal flow paths are all consistent with the original vehicle components. During maintenance and replacement, it supports direct in-place assembly without the need to modify the original pipeline structure or add additional adapter components. This effectively shortens the on-site disassembly, installation, and debugging time, making it convenient for maintenance technicians to quickly complete equipment fault repair.

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.