Markco Machine Services "MARKCO" is a business unit DBA of MFC group of companies. MARKCO is focused on manufacturing control valve products to provide dependable, tailored solutions for applications in oil and gas, power, and process generation. These products are manufactured at an approved manufacturing facility approved by MFC/MARKCO.

Markco Product Introduction

Special Working Condition Treatment Method

MK-GS

Straight Stroke Control Valve

Single Seat Valve

Size Range: NPS1/2 to 6, DN15 to DN150

Pressure Level: CL150 to CL300, PN10 to 40

Sealing Level: CL IV (CL V or CL VI optional)


  • The MK-GS control valve is a compact, single-seat design with advanced technology, low maintenance, and simple operation. It offers options like bellows seals, steam jackets, and extended valve covers for versatile applications.

MK-GC

Straight Stroke Control Valve

Sleeve Valve

Size Range: NPS1 to 14, DN25 to DN350

Pressure Level: CL150 to CL600, PN10 to 100

Sealing Level: CL IV (CL V or CL VI optional)


  • The MK-GC control valve is a high-performance sleeve valve with excellent stability and high flow capacity. It handles various liquids and gases under harsh conditions, including wide pressure drops and temperature ranges. Optional trims and features include bellows seals, steam jackets, and extended valve covers.

MK-GH

Straight Stroke Control Valve

High Pressure Sleeve Valve

Size Range: NPS1/2 to 12, DN15 to DN300

Pressure Level: CL900 to CL3200, PN160 to 420

Sealing Level: CL IV (CL V or CL VI optional)


  • The MK-GH regulating valve is a high-pressure sleeve valve with excellent stability for liquid and gas throttling. It handles harsh conditions like high pressure, cavitation, and noise, offering trims for precise control in demanding applications.

MK-GL

Straight Stroke Control Valve

Large Diameter Sleeve Valve

Size Range: NPS12 to 30, DN300 to DN750

Pressure Level: CL150 to CL600, PN10 to 100

Sealing Level: CL IV (CL V or CL VI optional)


  • The MK-GL control valve is a large-diameter sleeve valve with excellent stability and high performance. It manages liquids and gases under harsh conditions, handling wide pressure drops and temperatures. Optional trims and features include bellows seals, steam jackets, and extended valve covers.

MK-AC

Straight Stroke Control Valve

Angle Valve

Size Range: NPS1 to 12, DN25 to DN300

Pressure Level: CL150 to CL2500, PN10 to 420

Sealing Level: CL IV (CL V or CL VI optional)


  • The MK-AC control valve is an angle valve compatible with straight-through valve trims of the same size, offering all the same solutions as straight-through control valves.

MK-GT

Straight Stroke Control Valve

Three-Way Valve

Size Range: NPS1/2 to 8, DN15 to DN200

Pressure Level: CL150 to CL600, PN10 to 100

Sealing Level: CL IV (CL V or CL VI optional)


  • Series three-way cage-guided valves are designed for regulating or switching flow, with the following types:


  • Balanced Type: For general confluence and diversion.
  • Unbalanced Type: For merging; only recommended for switching in shunt service.
  • These valves are ideal for applications in harsh environments, such as sulfide and chloride stress cracking in oil and gas production.

MK-DSH

Straight Stroke Control Valve

Temperature and Pressure Reducer

Size Range: NPS4 to 24(入口),NPS8 to 60(出口)

Pressure Level: CL150 to CL2500

Sealing Level: CL IV (CL V optional)


  • Steam regulating valves are designed for demanding power plant cycles and precise pressure/temperature control. The valve body uses advanced Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) to optimize performance and reliability in steam systems.

MK-A120

Straight Stroke Control Valve

Pulverized Coal Regulating Valve

Size Range: NPS 1-1/2 X 2-1/2, 2-1/2 X 3

Pressure Level: CL600

120° Angle Valve


  • Tungsten Carbide Body Insert
  • Trim and Outlet Liner
  • Bellows Seal
  • Nitrogen/CO2 Purge Flow
  • Suitable for pulverized coal transportation.

MK-LG

Straight Stroke Control Valve

Fluorine Lined Valve

Size Range: NPS1 to 4

Pressure Level: CL150 to CL300

Sealing Level: CL VI


  • Perfluoro alkoxy resin-lined assemblies protect metal components from corrosive media, eliminating the need for expensive alloys. The valve areas in contact with fluid are lined with at least 5mm thickness. Conveyor molding technology ensures consistency, density, and low permeability, with translucent PFA material.

MK-SA

Straight Stroke Control Valve

Food Hygiene Valve

Size Range: NPS1/2 to 6

Pressure Level: CL 150

Sealing Level: VI

Internal surface finish of 20 Ra (0.5 μm) available


  • Hygienic control valves meet 3A hygiene standards, making them ideal for the pharmaceutical and biological industries. They are perfect for throttling high-purity fluids or gases.

MK-MF

Straight Stroke Control Valve

Micro Flow Valve

Size Range: NPS1/4 to 1

Can withstand maximum pressure - 207Bar

Sealing Level: CL VI

CV Value Range: 0.00013 to 2.5


  • Control valves are designed for low flow, high-pressure applications in labs and pilot plants. They adjust flow capacity and are ideal for controlling gases, chemical injection, and acid/alkali solutions in various industries.

MK-EB

Angular Stroke Control Valve

Eccentric Rotary Valve

Size Range: NPS1 to 20, DN25 to DN500;

CL150-CL900

Sealing Level: CL IV

Flow Coefficient: 200:1


  • The MK-EB eccentric rotary control valve, available in D-type and C-type, controls challenging fluids with throttling or switching functions. It features a streamlined flow path, durable metal trim, and a self-centering seat design.

MK-VB

Angle Stroke Control Valve

V-Type ball Valve

Size Range: NPS 1 to 24, DN25 to DN600

CL150-CL600

Sealing Level: CL IV(CL V or CL VI optional)

Flow Coefficient: 300:1


  • The MK-VB V-type control valve combines linear valve durability with rotary valve efficiency. Its V-shaped notch and straight-through flow design enhance performance and reduce clogging for gases, steam, liquids, and fibrous media.

MK-T200

Angle Stroke Control Valve

High Performance Butterfly Valve

Size Range: NPS 3 to 48, DN80 to DN1200

CL150-CL1500

Sealing Level: CL IV


  • High-performance butterfly valves with flangeless wafer or single flange designs feature a patented dynamic seal, suitable for demanding conditions.

MK-P(D/R)

Actuator

Thin Film Actuator

MK-PD series

Maximum thrust: 23 KN

Stroke: 19-100mm

Temperature Range: -50-80


MK-PR Series

Maximum Torque: 1800 N.M

Temperature Range: -45-80


  • The diaphragm actuator is a lightweight pneumatic actuator with a single spring. Air pressure moves the diaphragm to push the rod, while the spring balances the force, positioning the rod. It's perfect for straight stroke control, adjustment, and switch control.

MK-PC

Actuator-Cylinder Actuator

Maximum Thrust: 354 KN

Stroke: 29-610mm

Temperature Range: -50-80


  • The MK-PC cylinder actuator is a double-action, high-output actuator for straight stroke control, ideal for proportional adjustment, switch control, and other linear actions.
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