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DH220-5 Excavator Control Valve Secondary Safety Relief Valve Assembly
Boom, arm, and bucket overload protection in control valve system . Precision-engineered replacement assembly manufactured with hardened alloy steel components for reliable hydraulic protection in demanding construction environments .
Failure Symptoms
Weak
or drifting boom under load
Arm
dropping during lifting
Bucket
pressure relief failure
Compatible Models
DH220-5 Excavator
Technical Specifications
Parameter
Specification
Product Type
Secondary Safety Relief Valve Assembly
Compatible Machine
DH220-5 Crawler Excavator
Function
Boom, arm, and bucket overload protection in control valve system
Material
Hardened Alloy Steel
Application
Excavator Hydraulic Control Valve System
Warranty
3 Months
Company Profile
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 .
Factory Display
">FAQ
Q1 : What does this Secondary Safety Relief Valve do in the DH220-5 excavator ?
This valve provides boom, arm, and bucket overload protection in control valve system . It is a critical component in the DH220-5 excavator hydraulic control system . Symptoms of a failing valve include : weak or drifting boom under load; arm dropping during lifting; bucket pressure relief failure .
Q2 : Is this valve compatible with my DH220-5 excavator ?
Yes, this secondary safety relief valve is specifically designed for DH220-5 excavator control valve assemblies . Please provide your machine serial number for exact fitment confirmation within 24 hours .
Q3 : What material is the secondary 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 Secondary 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 DH220-5 Secondary Safety Relief Valve ?
We offer a 3-month warranty on all DH220-5 secondary 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 .
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2022.11.18
Total Annual:
5000000-10000000
Employee Number:
5~10
Ecer Certification：
Verified Supplier
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 p...
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 p...
