803086814 Buffer valve XCMG XE370D hydraulic excavator spare parts

Short Description:

Buffer valve is a protective component of excavator hydraulic system. It suppresses instantaneous impact pressure of hydraulic circuit and absorbs working pressure pulse to protect oil cylinders, valve groups and other hydraulic parts from high‑pressure impact damage.

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Product Detail

Product Tags

description

Part number:803086814
Part name:Buffer valve
Unit name:312701952 Pilot Hydraulic Piping
Fit for XCMG excavator XE370D, suitable for large‑scale earth‑moving excavation, mine stripping and infrastructure earth‑rock work. Used to replace original buffer valve with spool sticking and internal failure.

Stuck spool, fatigued spring and damaged internal seals will lead to buffer failure and excessive pressure shock, cause violent shaking and abnormal noise during operation, accelerate hydraulic component wear, and even trigger pipe burst in serious cases, threatening safety of heavy‑duty earth‑moving work.

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ITEM /PART NO. /PART NAME

1 803172790 Connector
2 803150454 Hose Assembly
11 805139929 Screw M10×40
12 805338260 Washers 10
13 803086814 Buffer valve

advantages

Mounting thread and port specifications fully match machine hydraulic circuit for direct interchange installation without pipeline modification.
High‑precision spool delivers sensitive response, absorbs instantaneous impact pressure rapidly and reduce damage to machine components caused by hydraulic shock.
Stable performance of internal spring and sealing assembly adapts to heavy‑duty alternating pressure condition in mine site and extends service life of hydraulic components.
Key hydraulic protection fitting, convenient for bulk stocking and easy on‑site disassembly, meet spare‑parts stocking demand for overseas projects in Southeast Asia and Africa.

maintenance & replacement

Fully release residual pressure of hydraulic system before disassembly to avoid personal injury caused by high‑pressure oil ejection.
Protect thread and port sealing surface from scratch during disassembly, clean contaminants inside valve mounting oil passage.
Apply proper hydraulic oil on thread during installation, control tightening torque, avoid valve body damage caused by over‑torque.
Perform no‑load test run after assembly, observe cylinder movement, confirm no shaking, impact noise and oil leakage.
Do not repair and reuse buffer valve with cracked body, stuck spool, failed spring or severely damaged seals, replace buffer valve directly.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.