GVO 4479038 3379039 Excavator ZX27 ZX30 YNF16476 Auxiliary Relief Valve Pressure Relief Valve Hydraulic Safety Valve

GVO 4479038 3379039 Excavator ZX27 ZX30 YNF16476 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 model YNF16476 cartridge relief valve is precisely compatible with Hitachi ZX27 and ZX30 mini excavators, serving as a core component for pressure stabilization and overload protection in the excavator's hydraulic system.

The valve body is made of high-strength alloy steel, forged and heat-treated in one piece, with a wear-resistant and rust-proof surface, and resistance to high-pressure impact. The internal valve core undergoes micron-level mirror polishing and is equipped with oil-resistant and aging-resistant fluororubber seals, ensuring it is less prone to jamming and internal oil leakage even during long-term operation in confined spaces, demolition operations, and muddy/dusty environments. This relief valve precisely controls the overall hydraulic working pressure of the machine, quickly buffering and releasing pressure when the load exceeds the limit, effectively protecting the hydraulic pump, distribution valve, and cylinders, and completely resolving common ZX27/ZX30 excavator malfunctions such as weak digging power, stalling, boom sinking, vibration, and hydraulic pressure relief due to high temperature.

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.