Sanitary corner seat valve is connected by quick chuck, sanitary corner seat valve material is made of 304 or 316L stainless steel, sanitary corner seat valve body inside and outside the mirror clean polishing, this system of corner seat valve pneumatic actuator can choose PA material or stainless steel material, function can choose single or double acting normally closed, normally open type, seal head using imported RPTFE material, Suitable for vacuum, normal pressure, medium pressure liquid, gas and other sanitary pipeline medium.