GVO 4271431 Excavator Parts EX60UR KX121-3S Auxiliary Relief Valve Pressure Relief Valve Hydraulic Safety Valve

GVO 4271431 Excavator Parts EX60UR KX121-3S Auxiliary Relief Valve Pressure Relief Valve Hydraulic 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

The GVO EX60UR and KX121-3S dedicated relief valve is compatible with the hydraulic systems of Hitachi EX60UR and Kubota KX121-3S mini excavators. It is a core hydraulic component for overall machine pressure regulation and overload protection.

1. The valve body is forged and tempered from high-strength alloy steel, with a wear-resistant and rust-proof surface. The internal valve core undergoes high-precision mirror grinding and is fitted with oil-resistant and high-pressure-resistant fluororubber sealing rings, preventing jamming and internal leakage during long-term heavy-duty operation on construction sites.

2. It accurately and stably stabilizes the main oil circuit pressure. When the excavation or breaking load exceeds the limit, it quickly releases pressure and buffers, effectively protecting the hydraulic pump, distribution valve, and cylinders. This solves common problems such as excavator stalling, boom drop, vibration, excessively high hydraulic oil temperature, and unstable pressure.

3. Standard insert thread structure, with threads, oil holes, and sealing dimensions fully conforming to the original parts. It can directly replace the original vehicle's overflow valve without modification, making it suitable for various working conditions such as earthwork, landscaping, crushing construction, and farmland transformation. It is wear-resistant and durable, significantly reducing the frequency of equipment maintenance.

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.