TYPE 63EG-98HM
The Type 63EG-98HM is a com- pact, fast response, high accu- racy relief valve/backpressure which is suitable for gas or liq- uid service. The valve’s design makes it ideal for pump recir- culation especially in skid pack- ages where space is limited. Available constructions include units suitable for sea water ap- plications.
Features
• Variety of Construction Materials—WCC steel and CF8M Stainless steel are standard constructions. Alloy 20, Hastelloy® C and Monel® are available options upon request.
• Low Build-up Capability—Minimal build-up pressure is required for main valve to achieve wide-open flow.
• Chemically Compatible Elastomers— Perfluoroelastomer (FFKM) is available for corrosive chemical applications.
• No Assembly Adjustments Required—Precise machining ensures that the main valve plug shuts off at both the port and upper seals at the same time.
• Fast Speed of Response—High gain piloting system for faster response than standard piloting system.
• Excellent Overpressure Protection—Superior pump bypass regulator for overpressure protection in pump recirculation applications.
• NACE Availability—Optional materials available for applications handling sour gases. These constructions comply with recommendations of the NACE International standards MR0175 and/or MR0103.
Introduction
The Type 63EG-98HM can be used for gas, liquid or steam applications. For applications up to 450°F / 232°C, the Type 63EG-98HM utilizes high temperature Ethylenepropylene (EPR) 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. The Type 63EG-98HM is not an ASME certified device.
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