Markco Globe Control Valve MK-GL Series

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

    Purchase details
This series of control valves can be equipped with special structures such as bellows – sealed type, steam – jacketed type, and extended bonnet. It is suitable for working conditions with a wide range of pressure drops and temperatures. There are various forms of trim available, and corresponding solutions can be provided for harsh working conditions such as high – pressure difference resistance, flashing cavitation, and noise.
 
Product Features:
 
  • The MK – GL type control valve complies with both European EN and American ANSI standards.
  • The wall thickness of the valve body follows ASME B16.34 – 2013. Each valve body cavity is optimally designed through 3D modeling and CFD simulation to ensure fluid stability.
  • The valve body and the upper bonnet are pressed together as a whole by double – ended studs, and the design specifications conform to ASME Ⅷ.
  • Quick – change trim — For valve bodies of the same size and pound – class, different forms of trim can be quickly replaced to meet different on – site process requirements.
  • Dynamically – loaded packing — The standard – configured control valve system is equipped with dynamically – loaded PTFE V – ring packing. The dynamically – loaded design helps to provide reliable sealing of the process medium. It greatly reduces the possibility of fugitive emissions from the valve stuffing box, complying with ISO 15848 – 1 and TA – LUFT VDI2440 low – emission specifications.
  • Easy maintenance — It is convenient to quickly replace trim components. With a clamped – in 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 — It adopts a streamlined flow passage design, and compared with most straight – through valves of the same size, it has a stronger flow – through capacity.
  • The valve body structure allows the material to comply with NACE 0175 – 2003.

Table 1: Valve Specifications

 
 
SpecificationANSI
Nominal Diameter12″, 14″, 16″, 18″, 20″, 30″, 16″x12″, 20″x16″, 24″x16″, 24″x20″
Nominal PressureClass 150/300/600, Compliant with ASME B16.34
Connection Type• Flanged: Requirements for raised face (RF), ring-type joint (RTJ) per ASME B16.5
• Also compliant with HG/T 20615-2009 and SH/T 3406-2013
• Butt Weld: per ASME B16.25
Face-to-Face DimensionCompliant with ANSI/ISA 75.08.01
Bonnet TypeStandard, Extended I, Extended II, Bellows Seal
Leakage ClassMetal Seat: ANSI/FCI 70-2 Class IV (Optional: Class V)
Flow DirectionFlow Up (Upward)
Flow CharacteristicQuick Opening, Equal Percentage, Linear
Rangeability50:1
Trim TypesCage-Guided Trim, Multi-hole Guided Trim, Labyrinth Trim, Multi-stage Trim
Working Temperature• WCB/LCB Material: -29°C to +232°C (LCB: -46°C min). 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-GL for your system, please contact the Kateteco sales team.

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