Product description
The Mark 128PQC Series Control Valve body assembly is suitable for on-off dump valve service in oil and gas production applications, in either sweet or sour gas conditions. This valve is also useful for on-off high-pressure control of numerous gasses and liquids, and can be used with materials that are viscous or erosive.Control valve MK 128PQC
Size
- 1″
Body Material
- WCB
End Connections
- NPT
Seat Materials
- Metal, Soft-seat, Cageless-soft seat
Trim Material
- 316
Shutoff
- Metal Ball Seal: 0.001% of valve capacity at full travel: 1/10 of Class IV per ASME/FCI 70-2
- TCM Ball Seal: 2 ml of air/min/inch of nominal valve size at 50 psi differential (3.4 bar, differential)
- Flow Ring: 2% of valve capacity at full trave
Max. Inlet Pressures/Temperatures
- 3600 psi @ 100°F; 3520 psi @ 180°F
Flow Characteristics
- Quick opening with a 45° taper plug
Flow Direction
- Either direction
Features and Benefits
- 1″ screwed end connections
- Quick opening flow characteristic
- Can be converted from straight through flow to angle flow
- Field reversible multi-spring actuator
- Stem guided valve plug
- Sour service capability: optional NACE MRO 175/ISO 15156-2009
- Tight shutoff
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