Markco Globe regulating valve MK-GH Series | Resistant to high pressure

The MK – GH type control valve is a high – pressure – resistant cage control valve. It is a high – performance control valve with excellent dynamic stability, which can be used for the throttling regulation of various liquids and gases and is suitable for harsh operating conditions.

    Purchase details
It is applicable to a wide range of working conditions in terms of pressure drop and temperature. There are various types of trim available, with corresponding solutions for harsh conditions such as high – pressure difference resistance, flashing cavitation, and noise.
 
Product Features:
 
  • The MK – GH type control valve complies with both European EN and American ANSI standards.
  • The wall thickness of the valve body adheres to ASME B16.34 – 2013. Each valve body cavity is optimized through 3D modeling and CFD simulation to ensure fluid stability.
  • The valve body and the upper bonnet are pressed into an integral unit by double – ended studs, and the design specifications meet ASME Ⅷ.
  • Quick – change trim — For valve bodies of the same size and pound – class, different forms of trim can be rapidly replaced to address diverse on – site process requirements.
  • Dynamically – loaded packing — The standard – configured control valve system comes with dynamically – loaded PTFE V – ring packing. The dynamically – loaded design is conducive to reliable sealing of the process medium. It significantly reduces the likelihood of fugitive emissions from the valve stuffing box, conforming to ISO 15848 – 1 and TA – LUFT VDI2440 low – emission specifications.
  • Easy maintenance — It is convenient to quickly replace trim components. With a clamped – type seat ring, the disassembly time can be shortened. When disassembling trim parts for inspection or maintenance, there is no need to remove the valve from the pipeline.
  • High economic efficiency — With a streamlined flow – passage design, compared with most straight – through valves of the same size, it has a stronger flow – through capacity.
  • The valve body structure enables the material to meet NACE 0175 – 2003.

Table 1: Valve Specifications

 
 
SpecificationANSI
Nominal Diameter1″, 1.5″, 2″, 3″, 4″, 6″, 8″, 10″, 12″, 14″
Nominal PressureClass 900/1500/2500/3200
Compliant with ASME B16.34
Connection Type• Flanged per ASME B16.5 for raised face (RF), ring-type joint (RTJ), male-female (MFM)
• Compliant with HG/T 20615-2009; SH/T 3406-2013
• Threaded or Socket Weld per ASME B16.11
• Butt Weld per ASME B16.25
Face-to-Face DimensionCompliant with ANSI/ISA 75.08.06
Bonnet TypeStandard, Extended I, Bellows Seal
Leakage ClassMetal Seat: ANSI/FCI 70-2 Class IV (Optional: Class V)
Flow DirectionFlow-to-Close, Flow-to-Open
Flow CharacteristicQuick Opening, Equal Percentage, Linear, Modified Equal Percentage
Rangeability50:1
Trim TypeMicro-flow Trim, Cage-Guided Trim, Multi-hole Guided Trim, Labyrinth Trim, Multi-stage Trim
Working Temperature• WCB/LCB Materials: -29°C to +232°C (LCB min: -46°C). With extended bonnet: up to +371°C.
• Stainless Steel (CF8/CF8M/CF3/CF3M): -29°C to +232°C. With extended bonnet: -196°C to +565°C.

For detailed technical datasheets, specific model selection guidance, or to discuss your application requirements, please do not hesitate to reach out to our sales team.

If you have any questions about the specifications or need support in choosing the right MK-GH for your system, please contact the Kateteco sales team.

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