Ningbo XiaYi Electromechanical Technology Co.,Ltd.
| Sample time | 25 days |
| Delivery Time | 30 working days for new samples |
| Density | 6.6g/cm3 |
| Payment Terms | T/T,,L/C |
| Material | Iron based , alloy |
| Application | Car shocks |
| Press Machine | 80 - 150T |
| Service | OEM |
| Supply Ability | 50,000pcs per month |
| Product Name | foot valve |
| Surface | Steam treatment |
| Packaging Details | Packed in plastic box one by one, then in carton with standard export package |
| Model Number | Customized powder metal parts |
| Brand Name | XIAYI |
| Certification | ISO9001:2008 |
| Place of Origin | China |
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Product Specification
| Sample time | 25 days | Delivery Time | 30 working days for new samples |
| Density | 6.6g/cm3 | Payment Terms | T/T,,L/C |
| Material | Iron based , alloy | Application | Car shocks |
| Press Machine | 80 - 150T | Service | OEM |
| Supply Ability | 50,000pcs per month | Product Name | foot valve |
| Surface | Steam treatment | Packaging Details | Packed in plastic box one by one, then in carton with standard export package |
| Model Number | Customized powder metal parts | Brand Name | XIAYI |
| Certification | ISO9001:2008 | Place of Origin | China |
| High Light | twin tube shock absorber base valve ，shock base valve with stable damping ，iron alloy shock absorber valve | ||
The Shock Absorber Base Valve, also known as a Damper Base Valve or Bottom Valve Assembly, is one of the most critical hydraulic control components inside a twin-tube hydraulic shock absorber system.
Installed at the bottom section of the shock absorber working cylinder, the base valve controls hydraulic oil flow between the working chamber and reserve chamber during suspension movement. By regulating oil pressure and flow resistance, the base valve directly influences:
Although the base valve is a relatively small internal component, its design accuracy and manufacturing consistency have a significant impact on the final vehicle driving experience.
A high-quality shock absorber base valve must provide:
XIAYI specializes in manufacturing precision automotive suspension components, including:
Through advanced stamping technology, precision machining, surface treatment, and strict process control, XIAYI provides reliable base valve solutions for global shock absorber manufacturers.
Our manufacturing philosophy focuses on:
A typical base valve assembly consists of several precision components:
| Component | Function |
|---|---|
| Base Valve Body | Provides structural support and oil passages |
| Valve Shim | Controls hydraulic opening pressure and flow resistance |
| Valve Seat | Provides sealing and flow guidance |
| Valve Spring | Controls preload force and valve response |
| Retainer Plate | Maintains valve assembly stability |
| Orifice Hole | Controls hydraulic flow speed |
Each component contributes to the final damping characteristics of the shock absorber.
Compression Stroke
During vehicle compression movement:
The base valve determines how quickly hydraulic fluid can pass through the system, directly affecting impact absorption performance.
Material selection is one of the most important factors affecting base valve durability and damping consistency.
Common materials include:
| Material | Characteristics | Advantages | Limitations |
|---|---|---|---|
| Cold Rolled Steel | Standard automotive material | Good formability and cost efficiency | Moderate fatigue strength |
| High Strength Steel | Higher mechanical strength | Better deformation resistance | Higher material cost |
| Alloy Steel | Enhanced fatigue performance | Suitable for heavy-duty applications | Requires advanced processing |
| Stainless Steel | Excellent corrosion resistance | Suitable for harsh environments | Higher cost |
| Performance Item | Standard Steel | High Performance Material |
|---|---|---|
| Valve Rigidity | Normal | Improved |
| Damping Stability | Moderate | More Consistent |
| Fatigue Resistance | Standard | Extended Service Life |
| High Temperature Performance | Average | Better Reliability |
| Extreme Road Conditions | Limited | Improved Durability |
Heat treatment improves:
| Parameter | Performance Influence |
|---|---|
| Heating Temperature | Determines material structure |
| Holding Time | Affects hardness consistency |
| Cooling Method | Influences mechanical properties |
Surface protection helps improve:
Common methods:
The dimensional accuracy of a Shock Absorber Base Valve directly affects:
Because the base valve operates under continuous hydraulic pressure changes, even small dimensional deviations may influence the final vehicle suspension performance.
| Control Item | Importance | Impact on Final Performance |
|---|---|---|
| Outer Diameter Accuracy | Ensures proper cylinder fitting | Prevents assembly deviation |
| Valve Port Diameter | Controls oil flow rate | Influences damping curve |
| Hole Position Accuracy | Ensures hydraulic balance | Improves damping consistency |
| Flatness Control | Ensures valve sealing | Prevents internal leakage |
| Concentricity | Maintains assembly alignment | Reduces abnormal wear |
| Burr Height Control | Protects valve components | Prevents hydraulic contamination |
Actual specifications depend on customer drawings and damper design requirements.
Typical control ranges:
| Item | Recommended Control Direction |
|---|---|
| Thickness | Stable material thickness control |
| Diameter | Precision dimensional control |
| Flatness | Minimized deformation |
| Surface Roughness | Smooth hydraulic contact surface |
| Hole Accuracy | High precision machining |
For automotive OEM applications, dimensional consistency between production batches is often more important than individual part accuracy.
XIAYI focuses on providing professional automotive suspension component solutions.
Our advantages include:
Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
1500000-5000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Founded in 2006 and headquartered in the strategic port city of Ningbo, China, XIAYI is a premier high-tech manufacturer specializing in the research, development, and production of precision shock absorber components and automated assembly equipment. With nearly two decades of indust... Founded in 2006 and headquartered in the strategic port city of Ningbo, China, XIAYI is a premier high-tech manufacturer specializing in the research, development, and production of precision shock absorber components and automated assembly equipment. With nearly two decades of indust...
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