● The body is made of high quality cast or ductile iron material, high load capacity and small head loss, other materials are also available on request.

● Corrugated pipe is made of high quality stainless steel material, forming process optimization, waveform, wall thickness uniform, all welded, reliable performance, long life.

● The disc sealing surface is formed by high frequency welding. The disc is aged and its performance is stable.

● Double valve cover gasket, valve cover gasket adopts top-down double gasket design to ensure the reliability of flange sealing.

● Graphite-filled signs provide dual stem seal functions: one is to provide emergency seal requirements in case of bellows failure, and the other is to ensure pressure seal in the valve cover in case of sudden changes in medium temperature.

● The valve stem nut is forged with high quality carbon steel, black surface treatment and high strength. Long service life.