Mark D & DA Series
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.
- 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
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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