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Grooved Non-rising Stem Soft Seal Visibility Gate Valve

Size range: 2"-12" (DN50-DN300)

Design standard: ISO 6182

Working pressure: PN10, PN16, PN25

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Product description

This valve is an upgrade from conventional valves with the addition of an opening indicator function. It is mainly used to connect or shut off the medium in the pipeline. The valve stem performs a rotational movement, and its transmission thread is located inside the body cavity, which saves installation space. The gate is fully rubber-coated; by utilizing the elastic deformation of rubber, the valve achieves a tight fit when closed, resulting in excellent sealing performance and thus zero leakage. There is no gate slot in the valve cavity, preventing the retention of debris, which minimizes fluid resistance and makes opening and closing operations lighter.

Customer challenge

The opening and closing torque of the gate valve is large.

Bolts are prone to rusting.

The upper seal and middle flange of the gate valve are prone to external leakage.

The gate of the gate valve is prone to internal leakage.

Product function

Low operating torque function

Anti-rust function

Anti-external leakage function

Anti-internal leakage function

The valve can be easily closed with a torque equivalent to 80% of the nominal diameter, achieving zero leakage under nominal pressure.

The valve bonnet and gland adopt a countersunk head wax-sealing design, with no bolts exposed, thoroughly solving the problem of bolt rusting.

The upper seal is designed with 3 O-rings to ensure no dripping during the dynamic movement of the valve stem; the middle flange adopts a self-sealing design, and the gasket uses the O-ring principle. The greater the pressure in the valve cavity, the tighter the rubber is squeezed, resulting in more reliable sealing.

The gate plate adopts advanced dual-mode glue injection molding and high-temperature vulcanization processes. The rubber surface of the gate plate has no exposed positioning points, with 100% full coverage. The rubber is evenly distributed, the dimensions are stable, and the sealing performance is excellent.

Value advantage

Energy conservation and environmental protection

The surface treatment uses non-toxic epoxy resin powder, which is sprayed by an automatic plastic spraying line to ensure the thickness, continuity and uniformity of the plastic layer.
Excellent material quality

All ductile iron castings are self-manufactured, adopting domestically leading wire-feeding nodularization technology. The nodularization rate reaches over 90%, and the quality requirements are higher than national standards.
Low flow loss

Full-channel design ensures low flow loss, contributing to energy conservation and consumption reduction.
Low torque

Under the rated working pressure, the opening and closing torque is not higher than 80% of the requirements specified in the national standards.
Reliable sealing

The gate is produced using advanced glue injection vulcanization technology, featuring uniform rubber thickness without exposure, 100% full coverage, and stable dimensions; the upper seal adopts a design of 3 O-rings plus 1 dust-proof ring, ensuring reliable sealing performance.

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