Manual Metal Hard Seal Knife Gate Valve

  1.Adopt metal hard sealing structure, generally, the sealing surface manufactured by the stainless, alloy steel and other anti wear and anti corrode materials, able to realize better sealing effect, still able to keep lower leakage ratio under high pressure, high temperature and other serious working situation. Valve petal tightly fitting with valve base when valve closed, make the specific pressure among sealing surfaces achieved the sealing requirements through medium pressure or external force action, valid prevent medium leakage. 2.Anti pressure performance, has higher anti pressure strength, able to withstand higher working pressure. Generally, the valve body manufactured by the high strength cast steel or forged steel materials, pass through strict quality test and performance test,make ensure it is safety and reliable running within rated pressure range. Able to design to be different pressure grade according to different operating scenes and pressure requirements, such as PN…