Description
Product Overview
The oil outlet valve is assembled on the upper part of the high-pressure oil pump piston. It relies on the sealing cooperation between the valve seat and the piston. When the piston pumps oil, it opens the channel to convey high-pressure fuel. After the piston returns to its original position, it immediately closes and locks the oil passage to prevent the high-pressure fuel in the common rail pipe from backflowing and causing pressure relief. Under long-term high-pressure fuel flushing of over 1000 bar, impurities in diesel particles wear down the steel, and in the alternating hot and cold conditions of the engine compartment, the sealing contact surface may develop scratches, and the sealing gap may widen. This can lead to fuel leakage, insufficient fuel supply pressure, rapid pressure relief after engine shutdown, and excessive black smoke in the exhaust. This product has standardized dimensions for outer diameter, oil groove specifications, and sealing stroke. After disassembling the oil pump, the oil outlet valve can be replaced alone to repair the failure of oil pressure holding and maintaining pressure. It is suitable for the maintenance of common rail high-pressure oil pumps for construction machinery, heavy trucks, and light trucks with direct injection/electronic control systems.
Core Advantages of the Single Item
The tempered and hardened alloy steel is integrated and formed as one piece. It has high hardness, wear resistance, and impact resistance.
The overall steel undergoes high-temperature quenching and hardening treatment, with a surface strengthening wear-resistant layer. It can withstand the long-term high-pressure fuel flushing and reciprocating closing impact. The sealing surface is less likely to develop scratches, maintaining the locking and holding pressure performance for a long time.
The segmented stepped limit steps ensure precise positioning of the oil pump inside.
The multi-level stepped limit structure of the cylinder body ensures complete axial and radial positioning after being installed in the oil pump body, without any offset or shaking. The rotational accuracy of the piston's reciprocating motion is stable, and the fuel supply flow is uniform without deviation.
The end face split oil groove design ensures smooth fuel flow without vortex wear.
The standardized split oil groove on the valve head end face disperses the impact force of high-pressure fuel, reduces the wear loss of the sealing surface due to the medium's impact, and simultaneously reduces the fuel supply resistance. The pump builds pressure faster.
The valve seat and piston are paired and ground to a micro-gap seal to prevent fuel backflow.
The valve seat and piston are processed using a pair of mirror surface grinding technology. They fit tightly in the closed state, quickly locking the oil path after engine shutdown, avoiding backflow of high-pressure fuel to the oil pump, and significantly improving the cold start performance at low temperatures.
The outer diameter tolerance is standardized uniformly, and disassembly and assembly are compatible without any jamming.
The tolerance of the valve body outer diameter is extremely small, and the gap between it and the oil pump cavity is appropriate. Maintenance and disassembly are smooth, without the need for on-site grinding and enlarging holes, shortening the time for oil pump disassembly and debugging.
Each single item is independently tested for flow and pressure holding. No secondary grinding and matching are required during assembly.
Each oil outlet valve is individually tested for holding pressure duration, fuel supply flow, and sealing performance before leaving the factory. The factory parameters are unified, and it can be directly matched with the corresponding piston pair. After assembly, the oil pump's standard fuel supply pressure can be quickly restored. List of Accessories
096420-0510 Oil discharge valve components (valve seat + plunger set), sealed bag-packed, multiple individual packages Applicable scenarios
It is suitable for large-scale mining excavators with mechanical direct injection and electronically controlled common rail fuel supply systems, heavy-duty wheeled loaders, long-distance trucks, light-duty freight pickups, agricultural tractors, fixed diesel generators, and is applicable for 24-hour continuous heavy-duty operations in mines, long-distance urban and rural transportation, high-intensity agricultural work, and environments with dust and impurities that corrode diesel engines. The high-pressure fuel pump pressure oil valve components are suitable for replacing the pressure sealing parts of various diesel engines' high-pressure fuel pumps under these conditions.
Product Basic Parameters
Product Name: 096420-0510 High-Pressure Oil Pump Outlet Valve Coupling
Part Number: 096420-0510
Main Material: Tempered and hardened alloy steel
Structural Feature: Segmented stepped limit valve body, end face分流 oil groove， mirror surface paired sealing valve seat and piston， multi-level stepped positioning structure
Application Conditions： High-pressure fuel single-direction pressure sealing， engine compartment alternating cold and hot vibrations， impurity diesel corrosion various diesel engine high-pressure fuel pumps internal components
Product Status： New complete set of pressure oil valve coupling， factory completed with pressure sealing， supply flow， wear resistance and durability full calibration and testing
Packaging： Sealed plastic bags are batch-packed， each isolated from dust to avoid transportation impact and scratches on the precise sealing working surface， supporting small-scale retail， bulk purchase in bags， and suitable for cross-border small package logistics.
