The incredible presentation of the duplex tempered steel shutoff not entirely set in stone by the exhibition of the materials and the primary qualities of the actual valve. In this way, we should initially investigate the qualities of duplex steel. The supposed “duplex tempered steel” is a sort of steel that the ferrite part and the austenite part each records for a half in the strong arrangement. Typically how much part is something like 30%. Since there are ferrite part and austenite part in the duplex steel, it has a somewhat high strength and high protection from chloride consumption related with ferritic steel, and brilliant sturdiness and welding execution related with austenitic ones.

The highlights of duplex hardened steel shutoff valves:

1. The valve utilizes generally fashioning or produced welding structure, passes the non-damaging testing. It goes through strong arrangement handling. The sythesis of the materials is fine. The item appearance is great.

2. The valve fixing is shower welded thế giới van hard amalgam. Nickel-based patch powder, Stellite amalgam, tungsten carbide and different materials can be splash welded. The hardness can be all around as high as HRC65. It has great wear obstruction and erosion opposition, which further develops the assistance life of the valve.

3. Because of the qualities of duplex steel material itself, the valve has major areas of strength for a to hydrogen sulfide and chloride consumption.

4. Taking into account the prerequisite on the strength of sterile ball valve stem brought about by expanded opening and shutting force after the high temperature testimony of water-coal slurry medium, while planning duplex steel ball valve stems, 1740H statement solidified hardened steel is utilized. This material can accomplish a high strength after statement solidifying process, which meets the genuine prerequisites of valves.

5. Duplex treated steel sterile shutoff valves utilize fixed-balls. The power on the fixing matches by the medium is altogether more modest than that of the drifting ball, prompting diminished opening and shutting force. The valve seat is intended to be a shut construction, which can successfully forestall the spring disappointment brought about by testimony and fouling. The fixing ring utilizes adaptable graphite or plastic amalgam. The material has a generally excellent fixing execution and high temperature-safe execution (adaptable graphite can really depend on 800 degrees Celsius and plastic compound can arrive at 3000 degrees Celsius). The valve stem utilizes affidavit solidified hardened steel.