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YOY A41H and A41Y low lift safety valves feature a closed spring-loaded design for air, water, petroleum gas, and industrial fluid systems. Available in carbon steel, SS304, and SS316 materials. Contact PME for quotation and technical support.
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Product information
YOY Closed Spring Loaded Low Lift Type Safety Valve
Overview of YOY A41H / A41Y Safety Valve
The YOY A41H and A41Y Series Safety Valve is a closed spring-loaded low lift safety valve designed to provide reliable overpressure protection for industrial equipment, pipelines, pressure vessels, and utility systems.
Manufactured according to Chinese National Standards, this valve is widely used in petroleum gas, compressed air, water, steam, and other industrial fluid applications.
The low lift design offers stable operation, accurate pressure relief performance, and long service life, making it an ideal solution for medium and high-pressure systems.
Key Features
Closed Spring Construction
The spring mechanism is enclosed inside the bonnet, providing:
- Better protection against environmental contamination
- Improved corrosion resistance
- Stable operating performance
- Extended service life
Low Lift Design
The low lift structure offers:
- Precise pressure relief
- Stable opening and closing performance
- Reduced vibration during operation
- Suitable for gas and liquid service
Excellent Sealing Performance
The valve seat and disc are hard-faced with Stellite alloy to provide:
- Long-term sealing reliability
- Superior wear resistance
- Corrosion protection
- Reduced maintenance requirements
Wide Material Selection
Available in:
- Carbon Steel (WCB)
- Stainless Steel 304
- Stainless Steel 316
to suit different process conditions and media.
Technical Specifications
| Specification | Description |
|---|---|
| Manufacturer | YOY |
| Series | A41H / A41Y |
| Valve Type | Closed Spring Loaded Low Lift Safety Valve |
| Connection Type | Flanged |
| Operating Temperature | Up to 300°C (A41H) |
| Operating Temperature | Up to 200°C (A41Y-P/R) |
| Pressure Rating | PN16, PN25, PN40, PN64, PN100 |
| Size Range | DN15 – DN300 (depending on model) |
| Body Materials | WCB, SS304, SS316 |
| Sealing Surface | Stellite Hard Facing |
| Operation | Automatic Pressure Relief |
Materials of Construction
A41H-C Series (Carbon Steel)
Suitable for general industrial services.
Main materials:
- Body: WCB Carbon Steel
- Disc: 2Cr13 Stainless Steel
- Stem: 2Cr13 Stainless Steel
- Spring: 50CrVA Alloy Steel
A41Y-P Series (SS304)
Suitable for mildly corrosive media.
Main materials:
- Body: Stainless Steel 304
- Disc: Stainless Steel 304
- Stem: Stainless Steel 304
- Spring: Teflon-Coated 50CrVA
A41Y-R Series (SS316)
Suitable for corrosive process applications.
Main materials:
- Body: Stainless Steel 316
- Disc: Stainless Steel 316
- Stem: Stainless Steel 316
- Spring: Teflon-Coated 50CrVA
Applications
The YOY A41H / A41Y Safety Valve is widely used in various industrial sectors:
Water Treatment Systems
- Water pipelines
- Water storage tanks
- Pump stations
Compressed Air Systems
- Air compressors
- Air receivers
- Pneumatic systems
Petroleum & Gas Industry
- LPG systems
- Fuel gas pipelines
- Storage facilities
Chemical Plants
- Process piping
- Pressure vessels
- Utility systems
Manufacturing Facilities
- Industrial utilities
- Production process lines
- Equipment protection systems
Advantages of YOY Low Lift Safety Valve
✔ Accurate pressure relief performance
✔ Reliable overpressure protection
✔ Compact and robust construction
✔ Closed spring design
✔ Excellent sealing capability
✔ Carbon steel, SS304 and SS316 options
✔ Easy maintenance
✔ Long service life
✔ Competitive pricing
✔ Suitable for gas and liquid applications
Difference Between A41 Series and A42 Series
| Item | A41 Series | A42 Series |
|---|---|---|
| Valve Type | Low Lift Safety Valve | Full Lift Safety Valve |
| Opening Height | Lower | Higher |
| Discharge Capacity | Medium | High |
| Typical Media | Water, Air, Oil, Gas | Air, Nitrogen, Hydrogen |
| Application | General Industry | High Capacity Relief Systems |
Why Choose THEGIOIVAN.NET?
THEGIOIVAN.NET supplies genuine YOY Safety Valves with full technical support, pressure setting consultation, sizing assistance, and competitive pricing.
Our engineering team can help customers select the correct valve size, pressure rating, material, and set pressure based on project requirements.
Contact Information
THEGIOIVAN.NET
Industrial Valve & Instrument Specialist
📧 Email: info@pm-e.vn
☎ Hotline:
- +84 902 601 875
- +84 902 720 814
- +84 907 450 506
- +84 979 737 351
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