Pressure Seal Gate Valve Manufacturer | High Pressure Industrial Gate Valve Supplier
ZONCIC is a professional pressure seal gate valve manufacturer in China, supplying high-performance pressure seal gate valves for high-pressure and high-temperature industrial applications. Our pressure seal gate valves are widely used in power plants, steam systems, oil & gas, petrochemical industries and industrial pipeline systems where reliable bonnet sealing and long service life are critical.
What is a Pressure Seal Gate Valve?
A pressure seal gate valve is a type of industrial gate valve specially designed for high-pressure service. It uses internal line pressure to improve the bonnet sealing effect, making it highly suitable for severe working conditions such as high-temperature steam, high-pressure oil and gas and power plant piping systems. Compared with conventional bolted bonnet valves, pressure seal gate valves provide stronger sealing performance and lower leakage risk in demanding industrial environments.
Technical Specifications
- Valve Type: Pressure Seal Gate Valve
- Design Standard: API 600 / ASME B16.34
- Pressure Rating: Class 600 / 900 / 1500 / 2500
- Size Range: 2" – 36"
- Material: WCB, WC6, WC9, Stainless Steel, Alloy Steel
- Connection Type: Flanged / Butt Weld
- Operation: Handwheel / Gear / Electric Actuator
- Applicable Medium: Steam, Oil, Gas, High-Temperature Fluids
- Temperature Range: Up to 600°C
Pressure Seal Bonnet Design
The key advantage of a pressure seal gate valve is its pressure-assisted bonnet sealing structure. Under operating pressure, the bonnet seal becomes tighter, helping the valve maintain excellent shut-off performance and minimize leakage in high-pressure and high-temperature systems.
- Improved bonnet sealing under high pressure
- Lower leakage risk in severe service environments
- Suitable for steam and thermal cycling applications
- Reliable performance in power plant and refinery systems
Key Features of Pressure Seal Gate Valve
- Pressure seal bonnet design improves sealing reliability
- Suitable for high-pressure and high-temperature service
- Strong body construction for severe working conditions
- Long service life with reliable shut-off performance
- Available in multiple materials and international standards
Applications of Pressure Seal Gate Valve
Pressure seal gate valves are widely used in industrial systems that require strong shut-off performance under extreme temperature and pressure conditions, including:
- Power generation steam systems
- Boiler main steam and feedwater lines
- Petrochemical plants
- Oil and gas high-pressure pipelines
- Refinery and industrial process systems
Manufacturing Standards
- API 600 / ASME B16.34 (American Standard)
- DIN / EN (German Standard)
- JIS (Japanese Standard)
- GOST (Russian Standard)
Why Choose Our Pressure Seal Gate Valves?
- Designed for Class 600–2500 high-pressure service
- Available in carbon steel, alloy steel and stainless steel materials
- Strict NDE testing, dimensional inspection and pressure testing
- OEM & project-based customization supported
- Fast delivery and global industrial project experience
Related Valve Solutions
We also supply gate valves, wedge gate valves, parallel slide gate valves, forged gate valves, ball valves and check valves.