Didtek Tilting Disc Retainerless Type Wafer Check Valve features a single cast body without pin retainer holes in the body. This design minimizes prospective leak paths through the valve body making it a preferable option for highly toxic, corrosive, or hazardous gas chemical processing applications. Didtek Tilting Disc Retainerless Type Wafer Check Valve are also suitable for liquid, natural gas, steam service, and vacuum service applications.