Water-sealing Gate Valve

Our Water-sealing Gate Valve, also known as water-sealed gate valve, is a specialized shut-off and regulating valve featuring a unique water-circulation sealing structure in the stuffing box. By injecting water at a pressure of 0.6–1.0 MPa into the interface, the valve achieves complete isolation between the system and the atmosphere, ensuring excellent airtightness and zero leakage even under high-pressure or vacuum conditions. Unlike traditional gate valves, our product adopts a scientific design that eliminates debris accumulation, reduces flow resistance, and extends service life, making it suitable for both harsh and conventional industrial environments.

Crafted with precision casting technology and strict quality control, our water-sealing gate valves comply with international standards such as GB/T 12234-2007, JB/T 9092, EN 1074-2, and DIN 3352, ensuring compatibility and interchangeability with global pipeline systems. Whether for thermal power plants, petrochemical facilities, or water treatment systems, this valve delivers stable and reliable performance.

1.Superior Sealing Performance : Equipped with a water-circulated sealing stuffing box and high-performance sealing components, the valve achieves tight sealing in both positive and negative pressure systems. The optional three "O" - shaped sealing rings enhance reliability, and the unique design allows for pressure-free replacement of O-rings without shutting down the water supply, reducing maintenance downtime.

2.Debris-Free & Low Resistance : Adopting a flat-bottom valve chamber design without gate grooves, the valve prevents accumulation of sand, stones, and other debris, ensuring unobstructed fluid flow and minimizing pressure loss. This design also makes the valve switch light and flexible, improving operational efficiency.

3.Strong Corrosion Resistance : Valve body is treated with non-toxic epoxy resin electrostatic spraying (inside and outside), which prevents rust water and medium pollution, meeting the requirements for direct drinking water systems. Valve stem, stem nut, and sealing sleeve are made of corrosion-resistant materials such as stainless steel and copper, ensuring long-term use in corrosive media environments.

4.Durable & Low Maintenance : The valve plate is fully wrapped with high-quality rubber through advanced vulcanization technology, ensuring precise geometric dimensions, firm bonding, and excellent elastic memory. The embedded copper nut design combines the nut and valve plate into one, avoiding loosening or falling off. With fewer moving parts, the valve is easy to maintain and has a long service life.

5.Wide Adaptability : Available in a variety of sizes, pressure ratings, and material options, the valve can adapt to working temperatures from -29℃ to 429℃ and working pressures from PN16 to PN160, meeting the needs of different industrial scenarios.

- Thermal Power Plants : Ideal for vacuum condensing systems of steam turbines, used to cut off or connect media such as water, steam, and oil under high temperature and pressure conditions.

- Petrochemical Industry : Suitable for pipelines requiring isolation from the atmosphere, used in flow regulation and pressure control of corrosive or high-temperature media such as oil and chemicals.

- Water Treatment & Municipal Engineering : Applied in tap water supply, sewage treatment, and irrigation systems, meeting the requirements for non-toxic and rust-free operation, and preventing medium pollution.

- General Industrial Pipelines : Used in metallurgy, light textile, food, medicine,ships, and energy systems as a shut-off or regulating device for fluid pipelines.

- Vacuum Systems : With a vacuum sealing structure, it is suitable for negative pressure pipelines that require strict airtightness, effectively isolating the system from the atmosphere.

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