pilot-operated relief valve

Utilized for gas, liquid or steam applications, Type 63EG-98HM uses high temperature Ethylenepropylene (EPDM) or Perfluoroelastomer (FFKM) for class VI shutoff in applications up to 550°F/288°C. Superior resistance to heat and most corrosive chemicals can be given by using Perfluoroelastomer (FFKM) and other elastomers if the device is used in a corrosive service.

It is essential that the valve materials are selected with care when using the Type 63EG-98HM with a corrosive liquid, such as water or a water-containing solution. To ensure valve plug travel on a corrosion-free surface, a Whisper Trim III Cage and body flange or a stainless steel linear cage must be used for aqueous solutions.