EMERSON
Final Control
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Fisher™ MR98 Series Backpressure Regulators, Relief, and Differential Relief Valves

MR98 Series is used for backpressure or relief applications in liquid, gas, air, and steam service. The Types MR98L, MR98H, and MR98HH are direct-operated and spring-loaded. The Types MR98LD, MR98HD, and MR98HHD use additional pressure loading to maintain relief differential pressures, backpressures or for remote setpoint adjustment.

CAD Drawings and Models: Click here
External Registration Animation: Click here
Internal Registration Animation: Click here

Key Features

  • Versatility
  • Differential Pressure Capability
  • Special Service Capabilities
  • Large Turndown Ratio
  • Graphite Gaskets
  • Set Pressures to 400 psig / 27.6 bar
  • Tight Shutoff with Elastomer Seats
  • Easy Maintenance
  • Arctic and Cryogenic Temperature Constructions Options
  • FDA, USP Class VI, and ADI Free EPDM Wetted Elastomers
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