Overview

Valve parts in contact with the medium undergo strict low-temperature treatment according to the specifications before precision machining to ensure that the valve parts can fully withstand the expansion and contraction caused by temperature changes, and the structure of the valve seat will not undergo permanent deformation due to temperature changes.

Adopting a long neck valve cover structure that can protect the packing box.

Adopting a gate structure that can maintain reliable sealing regardless of temperature changes, such as elastic gate and support open gate for gate valves.

Adopting a cobalt chromium tungsten hard alloy structure with upper sealing seat overlay to prevent stainless steel materials from biting each other.

Valve seat and gate sealing surface using cobalt chromium tungsten hard alloy overlay structure.

Adopting a pressure relief hole structure to prevent abnormal pressure rise in the middle chamber, the position of the pressure relief hole depends on the valve structure, and can be located on the valve seat or gate, connected to the inlet end of the valve. The surface of the valve stem is treated with nitriding and hardening to prevent surface scratches during the valve opening and closing process from affecting the sealing performance.

Low leakage packing can be selected according to user requirements to ensure that the leakage at the valve packing meets environmental requirements. Welded sleeves can be provided according to user requirements.

Insulation boards (drip boards) can be provided according to user requirements.