Mark 74 Series

Company Name : Jordan

Sizes: 1/2″ through 2″ (DN15 through DN50) End Connections
  • Threaded (NPT, BSPT, BSPP)
  • ANSI Flanges (150#, 300#)
  • DIN Flanges (PN10/16, PN25/40) Body Materials
  • Ductile lron
  • Bronze
  • Carbon Steel (WCB)
  • Stainless Steel (CF8M) Trim Materials
  • 303SS – standard for Ductile lron, Bronze or Car­ bon Steel valves
  • 316SS – standard on Stainless Steel valves
Seat Materials
  • Jorcote on SST – standard
Bellows
  • 316SS
  • Hastelloy C
Yoke: Cast lron Actuator: Steel Auxilliary Stem Packing
  • Spring-loaded Tetlon® (to 500º F/260º C)
  • Braided (above 500º F/260º C)

Specifications

Auxilliary Stem Packing

  • Spring-loaded Tetlon® (to 500º F/260º C)
  • Braided (above 500º F/260º C)

Body Rating: Ductile lron, Carbon Steel, and Stain­ less Steel up to 500 psi (34,5 bar) and 650º F (343ºc); bronze up to 500 psi (34,5 bar) depending upan spe­ cific construction. Temperature limit ot -20º F (-28,9º C) on all materials.

Action

  • Direct (air-to-close)
  • Reverse (air-to-open)

Shutott: ANSI Class IV

Ranges:

  • controller-operated: 3-15, 3-9, 6-30, 9-15 psi
    (0,2-1 ,0; 0,2-0,6; 0,4-2, 1; 0,6-1,0 bar)

Positioners: side or top mounted positioners are available (specify MK74TP or MK74SP)

Rangeability:

  • Mark 74 (1/2″ – 1-1/2″) (DN15 – DN40): 100:1
  • Mark 74 2″ (DN50): >200:1

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