GVO 723-40-57100 7234057100 Pressure Relief Valve Unloading Valve Safety Valve PC400-7 Excavator Construction Machinery Parts

GVO 723-40-57100 7234057100 Pressure Relief Valve Unloading Valve Safety Valve PC400-7 Excavator Construction Machinery Parts

Product Description

The GVO excavator relief valve, compatible with PC400-7 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 plug-in relief valve, designed for the PC400-7 heavy-duty excavator, is a crucial pressure protection component of the main hydraulic system of the entire machine. It is installed inside the distribution valve and is responsible for limiting the maximum working pressure of the hydraulic circuit. It performs the core functions of overflow stabilization and overload protection, directly determining the excavation thrust, lifting load capacity, and rotational output torque of the equipment.

The valve body is made of high-strength alloy steel and is formed through precision CNC turning. The valve core is hardened by quenching, strengthened by surface carburizing, and undergoes ultra-finishing treatment. The surface has excellent wear resistance and can continuously withstand scratches caused by iron particles and hard impurities in hydraulic oil. This significantly reduces the probability of valve core sticking and high-pressure leakage. The valve core and valve sleeve are machined using a micron-level matching grinding process, with strict control of the mating clearance. This ensures that the valve core responds sensitively under high-pressure impact and effectively controls the leakage of high-pressure oil, maintaining a stable and reliable pressure-holding effect.

The internal pressure regulating spring is made of high-toughness alloy spring steel and undergoes multiple rounds of high-pressure fatigue tests. It is not prone to plastic deformation under continuous and repeated high-pressure overflow impact conditions, and its elastic force decays slowly. The set pressure value remains stable and does not drift over a long period of use. The O-ring sealing component selected is made of high-pressure-resistant fluororubber, which is resistant to high temperatures and hydrocarbon corrosion. It maintains excellent sealing performance in the high-temperature hydraulic oil environment brought by continuous mining operations, preventing oil leakage at the valve position and ensuring perfect adaptation to the harsh working conditions of the mining site, such as high dust, severe load fluctuations, and large diurnal temperature differences.

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.