E307D Excavator Control Valve Unloading Safety Relief Valve
AssemblyUnloading circuit pressure relief for hydraulic system protection .
Precision-engineered replacement assembly manufactured with
hardened alloy steel components for reliable hydraulic protection
in demanding construction environments .
Failure SymptomsHydraulic
shock during unloading
Pressure
spike at neutral position
Compatible ModelsE307D Excavator
Technical Specifications| Parameter | Specification |
|---|
| Product Type | Unloading Safety Relief Valve Assembly |
| Compatible Machine | E307D Crawler Excavator |
| Function | Unloading circuit pressure relief for hydraulic system protection |
| Material | Hardened Alloy Steel |
| Application | Excavator Hydraulic Control Valve System |
| Warranty | 3 Months |
Company Profile
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ABOUT US
Guangzhou Xingfan Precision Oil Pressure Co. , Ltd. focuses on the
after-market hydraulic maintenance and replacement of construction
machinery including excavator, rotary drilling rig, pile driver,
concrete mixer, delivery pump truck, crane, harvester and other
equipment . Including hydraulic pump, traveling motor, rotary
motor, distribution valve multi-way valve, gear pump, operating
handle, walking foot valve, etc .


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Factory Display


FAQQ1 : What does this Unloading Safety Relief Valve do in the E307D
excavator ?
This valve provides unloading circuit pressure relief for hydraulic
system protection . It is a critical component in the E307D
excavator hydraulic control system . Symptoms of a failing valve
include : hydraulic shock during unloading; pressure spike at
neutral position; pump cavitation noise .
Q2 : Is this valve compatible with my E307D excavator ?
Yes, this unloading safety relief valve is specifically designed
for E307D excavator control valve assemblies . Please provide your
machine serial number for exact fitment confirmation within 24
hours .
Q3 : What material is the unloading safety relief valve made of ?
The valve body is precision-machined from hardened alloy steel with
heat treatment for wear resistance . Internal components undergo
strict dimensional and pressure testing before assembly to ensure
reliable operation under demanding hydraulic conditions .
Q4 : Do you provide installation support for this Unloading Safety
Relief Valve ?
We recommend installation by a qualified hydraulic technician . Our
engineers provide torque specifications, pressure calibration
guidance, and troubleshooting support via video call or email .
Proper installation ensures optimal valve performance and system
reliability .
Q5 : What is the warranty and delivery time for the E307D Unloading
Safety Relief Valve ?
We offer a 3-month warranty on all E307D unloading safety relief
valve assemblies . Standard delivery is 15-30 days with
export-standard packaging . Payment via T/T, Western Union, or
PayPal is accepted . Volume pricing available for bulk orders .