The valve body can be forged or cast according to the working conditions and customer requirements, and choose different grades of alloy steel according to the working conditions and requirements to meet high temperature and high pressure or other special requirements.

The sealing surface between the seat and the gate is surfacing welded Stairi carbide, which is highly hardened and finely ground to ensure high hardness and poor hardness of the sealing surface and effectively extend the service life; The valve seat leakage rate reaches zero leakage standard.

Valve stem surface by precision grinding and nitriding treatment, small friction with the packing, abrasion resistance and corrosion resistance, effectively reduce the opening and closing torque, coupled with the valve stem copper nut supported by needle roller bearings, easier operation.

The valve cavity adopts pressure self-tightening seal. Under the action of medium pressure, the valve cover moves upward to form a seal at the conical sealing ring. The greater the medium pressure, the greater the sealing force and the reliable sealing.