Description
Overview of KNKE Pneumatic Gate Valve
KNKE Pneumatic Gate Valves are designed to control the flow of liquids, gases, and steam using compressed air. The innovative design ensures high durability, superior sealing performance, and ease of maintenance. These valves are especially suitable for pipelines where space is limited, and frequent valve operations are not required.
Powered by compressed air, the pneumatic actuator opens or closes the valve based on control signals. The valve features a V-shaped core design, which ensures precise flow regulation and minimizes leakage.
Key Features of KNKE Pneumatic Gate Valve
- Efficient Control: The valve operates using compressed air, providing a reliable and efficient solution for controlling gases, liquids, and steam.
- V-Shaped Core: The V-shaped valve core ensures high flow rates, excellent sealing, and effective flow regulation.
- Durability: The valve is made of high-quality materials like ductile cast iron, stainless steel, and 316L stainless steel, ensuring long-lasting performance.
- Low Maintenance: With a simple design, the valve requires minimal maintenance and operates for extended periods without frequent adjustments.
- Corrosion Resistance: The valve body and actuator feature an anti-corrosion coating, ensuring reliability even in harsh environments.
- Pressure Resistance: The valve can withstand high working pressures, typically 1.1 times the pipeline’s maximum pressure.
Technical Parameters
- Nominal Diameter: DN50 to DN600
- Nominal Pressure: ≤ 16MPa
- Materials: Ductile Cast Iron, Stainless Steel, 316L Stainless Steel
- Control: Pneumatic (Compressed Air) Actuation
- Seal Materials: Various materials including PTFE, Nitrile Rubber, EPDM
- Temperature Range: -20°C to 350°C
- Applicable Media: Water, Oil, Gas, Steam
- Standards: GB, ANSI, ISO, JIS
Material Specifications
| Part | Material | Details |
| Body | Ductile Cast Iron, Stainless Steel | Material grade specified in the contract |
| Gate | Stainless Steel, 316L | Corrosion-resistant for high durability |
| Stem | Stainless Steel (2Cr13) | For higher strength and resistance to corrosion |
| Seals | PTFE, Nitrile Rubber, EPDM | Suitable for various operating environments |
| Actuator | Aluminum or Cast Steel | Ensures smooth actuation via compressed air |
Design and Manufacturing Standards
- Manufacturing Standards: GB/T 12237, ANSI B16.5, JIS B2220
- Pressure Testing: API 598, GB/T 13927
- Temperature Rating: ASME B16.34
- Corrosion Protection: Electrostatic powder coating, epoxy resin for internal and external protection
- Quality Assurance: All materials undergo rigorous testing to ensure they meet the highest mechanical, corrosion-resistant, and performance standards.
Operation and Control
- Actuation: The pneumatic actuator uses compressed air to operate, enabling 90° rotation to open or close the valve.
- Sealing Performance: The valve guarantees a complete seal when closed, ensuring no leakage even under high pressure.
- Maintenance: The valve’s simple design reduces the need for maintenance, offering reliability in long-term use.
- Control Systems: The valve works seamlessly with control systems and positioners for automated operation.
- Actuation Force: Designed for easy operation with a maximum torque of 240N·m.
Performance Range
| Pressure Rating | Test Pressure | Max Working Pressure | Temperature Range |
| ≤ 16 MPa | 24 MPa | 1.1 x working pressure | -20°C to 350°C |
Application Areas
- Industry: Ideal for industries needing high pressure and precise control, including petrochemicals, water treatment, pharmaceuticals, and power generation.
- Media: Suitable for controlling gases, liquids, and steam.
- Pipeline Systems: Perfect for use in complex pipeline systems for distribution, switching, and flow regulation.
Advantages of KNKE Pneumatic Gate Valve
- Precise Control: The V-shaped core and actuator system deliver smooth, accurate flow control.
- Corrosion Resistance: The high-quality materials offer exceptional resistance to corrosion, ensuring long-term reliability.
- Durability: With its robust construction, the valve operates effectively under extreme pressure and temperature conditions.
- Ease of Maintenance: The valve’s simple design minimizes maintenance requirements, making it a cost-effective solution for industries with long-term operational needs.