GVO SP201018 Excavator Parts M5X130 M5X180 Slewing Pump Balance Valve Anti-sway Valve Maintenance Valve

GVO SP201018 Excavator Parts M5X130 M5X180 Slewing Pump Balance Valve Anti-sway Valve Maintenance 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 external-mount swing relief valve is specifically designed for the Kawasaki M5X130 and M5X180 series swing motors. It is widely compatible with mainstream medium-to-large excavators—such as the Kobelco SK200-8, SK210-8, SK330-8, and SK350-8—that utilize these motors. Serving as an independent pressure protection valve for the swing hydraulic circuit, it performs four core functions: limiting maximum system pressure, relieving pressure spikes during swing start/stop, stabilizing pressure during braking, and providing overload relief buffering. It is an indispensable safety pressure control component for the excavator's swing motor assembly.

Engineered with a focus on structural sealing, contamination resistance, and durability for field operations, this M5X130/M5X180 swing relief valve is built to withstand harsh environments characterized by heavy dust, mud and water splashes, and the risk of iron filings or debris contaminating the hydraulic oil. It features multiple enhancements and upgrades to its sealing system, anti-rust treatment, and anti-jamming valve structure.

The external hose connectors at both ends are equipped with fluororubber O-rings that are resistant to extreme temperatures and hydraulic oil corrosion. Precision machining of the seal grooves ensures a tight fit upon assembly. These O-rings resist hardening, aging, deformation, and leakage—whether during prolonged high-temperature summer operations or the thermal cycling of cold winter starts—thereby preventing hydraulic oil drips that cause waste and site contamination.

The valve spool utilizes micron-level precision sliding clearances, and all internal flow passages feature chamfered edges and deburring to minimize erosion and cavitation damage caused by high-pressure oil flow. A simple integrated filtration structure at the inlet blocks large iron filings and debris from entering the spool sealing interface. This design significantly reduces the risk of valve jamming and subsequent swing system failure—even when hydraulic oil filters are not replaced on schedule or oil cleanliness is suboptimal—making it well-suited for the realities of rough maintenance practices on construction sites.

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.