Product Name: Sanitary stainless steel SS304 SS316L Pneumatic Tank Bottom seat Valve Valve Body Material: 1.4435/1.4301, SS304/SS316L(Forged) Seal Material: EPDM (standard) conforms to FDA177.2600 Surface Finishing: Mechanically polishing , Sand blasted Operating Principles: Tank Bottom Valve is operated by pneumatic actuator, Air-Spring or Air-Air, Compressed Air push valve shaft to on or off position, Valve Seat open inside to avoid auto opening when pipeline over pressure. Air Pressure: 5-7 bar G1/8"(BSP) Availably Size: DN40-DN100,1.5"-4" Operated: Pneumatic Gasket: EPDM, silicone or Viton Connection: weld,clamp,thread, Control: Sensor, Pneuamtic actuator(single acting, double acting), electric actuato, C-TOP, C-top controller(AS-I) Certificate: PED 2014/68/EU, FDA.177.2600