GVO 68511-70040 Excavator Parts KH-41 Main Relief Valve Pressure Relief Valve Hydraulic Safety Valve

GVO 68511-70040 Excavator Parts KH-41 Main 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

GVO offers a long-term, readily available supply of 923G1 4V28-0 relief valves, compatible with the Kubota KH-41 classic mini excavator. Sufficient inventory is maintained to support large-volume orders. The products strictly replicate the original factory manufacturing process; each relief valve undergoes high-pressure testing on a hydraulic bench before leaving the factory, eliminating defective products with jamming, pressure leakage, or other issues, ensuring consistent and stable quality.

The valve body is made of 40Cr alloy steel, forged and tempered, with a polished surface for rust prevention and impact resistance. The internal valve core undergoes micron-level mirror grinding and is equipped with oil-resistant and high/low temperature fluororubber seals. Under harsh working conditions such as long-term earthmoving, crushing, and landscaping, it is not prone to valve core jamming or internal oil leakage. When the excavation load exceeds the limit, the valve instantly buffers and releases pressure, isolating high-pressure impacts and providing comprehensive protection for the hydraulic pump, multi-way distribution valve, and boom and arm cylinders. This effectively solves frequent malfunctions in the KH-41 excavator, such as weak digging power, engine stalling, boom sinking, vibration, excessively high hydraulic oil temperature, and pressure drift. The original standard insert thread structure, with thread, oil hole, and sealing groove dimensions that perfectly match the original vehicle valve hole, requires no modification or grinding, and can be directly disassembled and replaced. It is wear-resistant and durable, greatly reducing equipment downtime and maintenance costs.

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.