Globe & Angle Control Valve

The Mark D & DA Series are single port, screwed-in metal-seated valves with unbalanced post-guided valve plugs, and push-down-to-close plug action used for high pressure applications. These valves are used in the oil and gas industry, and are especially useful for throttling or on/off control of liquids or gases, providing excellent pressure and flow control of gasses and various liquid processes.

Features & Benefits
  • Available in in-line or angle design
  • Equal percentage flow characteristic is standard
  • High pressure capability
  • Available in a variety of body and trim materials
  • Mark D/DA Series is suitable for a variety of liquid and gas applications
  • Optional trim materials are available for erosive applications
  • Sour service capability: Optional NACE MRO 175/ISO 15156-2009
  • Tight shutoff
Specifications

Sizes: 25.4 mm (1″) and 50.8 (2″)

End Connections:

  • ASME Class 150 through 2500
  • D Series are available with cast integral flanges, welded flanges, screwed or socket weld connections
  • DA Series are available with welded flanges, screwed or socket welded end connections

Body Materials: LCC, WCB, WCC, WC9, C5, Monel, CF8M SST, Additional materials may be available upon request

Trim Materials: 316 Stainless Steel, Tungsten Carbide; Stellite Overlay, Cobalt, Ceramic

Seats: Metal

Shutoff: Class IV and V

Maximum Inlet Pressure & Temperature: Consistent with ASME Class per ASME 16.34

Maximum Pressure Drops: Capable of full rated pressure drops

Flow Characteristics: Equal Percentage

Flow Direction:

  • Mark D Series: Flow up through seat ring
  • Mark DA Series: Flow in other direction

Valve Travel Indication: Valves are supplied with visual travel indicator

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