The flanged gate valve relies on stem pressure to ensure a tight seal between the valve disc sealing surface and the valve seat sealing surface, preventing media flow. It features low friction between the sealing surfaces during opening and closing, wear resistance, small opening height, and excellent manufacturing process and performance. It is a widely used valve in industrial sectors.

Product Features -

1. The gate valve has a relatively simple structure, making manufacturing and maintenance convenient;

2. The sealing surfaces are not easily worn or scratched, providing good sealing performance and a long service life;

3. The valve disc stroke is small during opening and closing, resulting in short opening and closing times;

Product Selection Standards -

Design Standard GB12235, Structural Length GB12221, Connecting Flange JB79, Testing and Inspection GB/T 13927, Pressure/Temperature GB 9131

Primary Component Materials and Performance -

Body Cover Plate: WCB, WC1, WC6, WC9, ZGCr5Mo, 12Mo2Ti

Valve Stem: 2Cr13, 38CrMoAl25Cr2MoV, 1C18Ni12Mo2Ti

Operating Principle and Structural Description -

1. When the handwheel is turned clockwise, the valve stem moves downward, the valve disc descends, and the sealing surface closes, blocking the passage. Reversing the direction opens the valve, raising the valve stem to its highest point for sealing.

2. This flanged gate valve has an added top seal. When the valve is open, it provides a double-layer seal along with the packing, and also offers some protection to the packing.

3. This valve uses nylon for the sealing surface, soft molded packing, and the top seal is also made of soft material, resulting in good sealing performance.