44659820 4392196 Excavators EC460 EC480 ZAX450 ZAX470 SK450 SK480 Main Relief Valve Pressure Relief Valve Safety Valve

44659820 4392196 Excavators EC460 EC480 ZAX450 ZAX470 SK450 SK480 Main Relief Valve Pressure Relief Valve Safety Valve

Product Description

The GVO excavator relief valve, compatible with Hitachi 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 GVO cartridge-type main relief valve is a highly versatile hydraulic pressure protection component for large-tonnage excavators, suitable for engineering machinery repair shops. One valve body is compatible with six major heavy-duty excavator models EC460, EC480; ZX450, ZX470; and SK450, SK480. It replicates the original valve body's outer diameter, thread pitch, cartridge length, and pressure adjustment structure, making it an indispensable core component for safety pressure relief in the hydraulic systems of medium and large mining excavators.

The product is individually packaged in a thickened cardboard box with a shock-absorbing foam insert. The valve head is also individually isolated and protected. During domestic long-distance logistics and international ocean shipping, it effectively resists compression and collisions that could cause deformation of the valve core or damage to the external threads, ensuring the part arrives intact.

The supply model is flexible and diverse, offering both bulk wholesale and retail options to construction machinery repair shops and workshops nationwide. One valve covers six major machine models, significantly reducing spare parts inventory pressure. Externally, it can supply large quantities of excavator parts to overseas trade customers, supporting neutral packaging, GVO brand OEM customization, and a full range of export-oriented services including bilingual (Chinese and English) installation and commissioning manuals.

The installation process is extremely simple. Replacement is completed by simply removing the outer plug of the corresponding model's distribution valve, inserting the overflow valve into the valve hole, and tightening the hexagonal nut. A simple pressure adjustment reference guide is included, allowing repair technicians to quickly calibrate and adjust the system pressure using a hydraulic pressure gauge.

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.