Zero-Leaking Gate Valve

0-Leaking Gate Valve

Size Range: DN50 – DN2000 (2” – 80”)
Pressure Rating: PN10 / PN16 / ANSI Class 150
Temperature Range: -20°C to +180°C depending on seat and material options
Body Material: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Seat Material: EPDM, NBR, PTFE, Metal Seals (for high-pressure applications)
Gate Material: Ductile Iron or Stainless Steel with corrosion-resistant coatings
Stem Material: Stainless Steel 420/431
End Connections: Flanged to EN 1092-2, ANSI B16.5, or custom drilling
Operation: Manual (Handwheel), Gear, Pneumatic, Electric Actuation
Testing: Hydrostatic Shell Test: 1.5× rated pressure, Seat Test: 1.1× rated pressure per EN 12266 / API 598
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0-Leaking Gate Valve

Manual zero leaking gate valve DN50-DN200 ductile iron ANSI Class 150 for industrial fluid controlIntroduction

At Vcore Valve, we take great pride in our ability to design and produce 0-Leaking Gate Valves that meet the highest standards of quality and performance. With years of expertise in valve manufacturing, I have seen firsthand how critical it is to have valves that not only isolate fluid flow but do so without the risk of leakage over time. Our 0-Leaking Gate Valve addresses exactly that challenge, combining robust construction with cutting-edge sealing technology.

The 0-Leaking Gate Valve is specifically designed for situations where tight shut-off is essential, and leakage can’t be tolerated. It is particularly useful in systems where stringent leakage requirements are necessary, such as water treatment plants, chemical processing, and power generation facilities. The use of a 0-leaking valve doesn’t mean compromising on performance; it’s a choice for specific operational needs. Our valves are crafted to perform reliably even under high pressures, making them suitable for demanding conditions.

Product Description

The 0-Leaking Gate Valve is engineered to offer reliable flow control and complete isolation in pipelines and systems. Unlike traditional valves, the gate in this design operates with a slight leakage tolerance, allowing the valve to still perform effectively while addressing specific engineering needs. The key to its functionality lies in the precision of the seat design and the gate-to-seat sealing mechanism.

Our 0-Leaking Gate Valve is designed to meet both high-pressure and high-temperature applications while maintaining a robust and leak-resistant seal. The valve body is cast from high-strength ductile iron or carbon steel, and the seat material is chosen based on the type of media being handled (from EPDM to PTFE or even metal seals). The valve gate is equipped with advanced sealing rings to reduce the chances of leakage even in high-stress conditions.

Key Features & Functions

  • Leakage-Control Design: While conventional gate valves offer a tight shut-off, our leaking gate valve is designed to handle controlled leakage under specific conditions, ensuring flow control even in systems that tolerate minor leakage for operational reasons.

  • Durable Construction: Made from high-grade cast iron or stainless steel (316, 304), the valve is built to last, withstanding the most demanding environments, from chemical plants to seawater desalination.

  • Advanced Sealing: Featuring precision-machined seats and innovative seal designs, our gate valve offers a perfect balance of performance and reliability, even under fluctuating pressure conditions.

  • Corrosion Resistance: Our valves come with anti-corrosion coatings and use materials that protect against rust and deterioration, ideal for industrial applications involving corrosive substances.

  • Modular Design: Available with manual, gear, pneumatic, or electric actuation systems, providing flexibility for different pipeline configurations and operational preferences.

 

Technical Specifications

Item Specification
Valve Type 0-Leaking Gate Valve
Size Range DN50 – DN2000 (2” – 80”)
Pressure Rating PN10 / PN16 / ANSI Class 150
Temperature Range -20°C to +180°C depending on lining material
Body Material Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Seat Material EPDM, NBR, PTFE, Metal Seals (for high-pressure applications)
Gate Material Ductile Iron or Stainless Steel with corrosion-resistant coatings
Stem Material Stainless Steel 420/431
Lining Material EPDM, NBR, Neoprene, PTFE
End Connections Flanged to EN 1092-2, ANSI B16.5, or customized drilling
Operation Manual (Handwheel), Gear, Pneumatic, Electric Actuator
Testing Shell Test: 1.5× rated pressure, Seat Test: 1.1× rated pressure per EN 12266 / API 598

 

Zero leaking gate valve installed in water treatment plant raw water pipeline for leak-free fluid isolation"Function and Operation

The 0-Leaking Gate Valve operates using the traditional gate mechanism, but with a special design that allows controlled leakage under certain conditions. The gate is moved perpendicular to the flow of the medium, and when fully opened, the passage is clear with minimal pressure drop. When the valve is closed, the gate seals against the rubber-lined seat, achieving a tight shut-off. However, in certain configurations, slight leakage is allowed to accommodate systems that require a mild controlled flow.

The valve can be equipped with manual actuators (handwheels), or more commonly, with electric actuators, pneumatic actuators, or gear mechanisms depending on the size of the valve and the application. The valve design ensures low friction, which leads to reduced wear on components, extending service life.

Cross-section of zero leaking gate valve showing PTFE wedge and double O-ring stem sealApplications

Our 0-Leaking Gate Valve is perfect for systems where full isolation is not always required, but a controlled flow or slight leakage is necessary. Some of the most common applications include:

  • Chemical Processing Plants: For controlled leakage of chemical slurries and caustics.

  • Wastewater Treatment: For systems that require leakage to maintain certain flow levels.

  • Oil & Gas Pipelines: Where slight leakage is acceptable in the control of hydrocarbons or other fluids.

  • Power Generation: In high-temperature or high-pressure applications requiring controlled flow regulation.

  • Pulp & Paper: For handling abrasive slurry and thick liquids where some leakage helps maintain pressure

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