Fisher Type 63EG-98HM Pilot-Operated Relief Valve or Backpressure Regulator
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Type 63EG-98HM can be used for gas, liquid, or steam applications. For applications up to 550°F / 288°C, the Type 63EG-98HM utilizes high temperature Ethylenepropylene (EPDM) or Perfluoroelastomer (FFKM) for class VI shutoff. If used in a corrosive service, Perfluoroelastomer (FFKM) and other elastomers are available options that offer superior resistance to heat and most corrosive chemicals.
When using the Type 63EG-98HM with a corrosive liquid, usually water or a water-containing solution, the valve materials must be selected with care. For aqueous solutions, use a stainless steel linear cage or Whisper Trim III Cage and body flange to ensure valve plug travel on a corrosion-free surface.
Valve Type: Regulators
Sub-Type: Fisher Regulators
- Variety of Construction Materials
- Low Build-up Capability
- Chemically Compatible Elastomers
- No Assembly Adjustments Required
- Fast Speed of Response
- Excellent Overpressure Protection
- NACE Availability
- Tight Shutoff
- Easily Converted to Differential Control
- Versatility in Both Liquid and Gas Service