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Product description
The Mark ED Series is intended for general control applications over a wide variety of temperatures and pressure drops. This design has an upper piston ring seal and metal-to-metal seating.
The Mark ET Series is intended for applications requiring low leakage rates with composition seating (TFE) for tight shutoff requirements or metal-to-metal seating for higher temperature capabilities. The valve plug has a two-piece upper seal.
Control valve MK ED/ET (8")
Size
- 8″
Body Material
- LCC, WCB, WCC, WC9, C5, Monel, CF8M SST, additional materials may be available upon request
End Connections
- ANSI Flanges – Class 150. 300, 600
- Raised Face or Ring Type Joint Flanges as per ASME B16.34 latest edition
Seat Materials
- Metal, PTFE
Trim Material
- 316SST, 416SST, 17-PH, Alloy 6-Co.Cr-A, Cobalt, 316/Tungsten Carbide
Shutoff
- Mark ET: ANSI Class IV & V
- Mark ED: ANSI Class II & III
Max. Inlet Pressures/Temperatures
- consistent with ASME Class per ASME 16.34
Max Pressure Drop
- all valves are capable of full rated pressure drops
Flow Characteristics
- Quick opening, linear, equal percent
Trim Options
- Noise abatement, Anti-cavitation
Flow Direction
- Normally Down, Linear, Quick Opening, Equal Percent
- Always up, Noise Abatement
- Always Down, Anti-Cavitation
Valve Travel Indication
- valves are supplied with visual travel indicator
Features and Benefits
- Top entry cage design allows easy, in-line maintenance
- Balanced Plug allows the use of smaller actuators
- Characterized flow options including equal percentage, linear, and quick opening
- Available in a variety of body and trim materials make the Mark E Series suitable for a variety of applications including liquids, gasses or steam
- Cage guiding allows the Mark E to handle high pressure drops while providing greater plug stability
- Sour Service Capability: Optional NACE MRO175/ISO15156-2009
- Tight shutoff
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