| Availability: | |
|---|---|
| Quantity: | |
MK-GT
The MK-GT series of three-way control valves with sleeve guidance feature balanced or unbalanced valve cores and sleeve guidance. They can be used for regulating and on-off control of various fluids and are available in the following structures:
MK-GT-C (Balanced) - Suitable for general flow combination (fluid mixing) and flow division (fluid dispersion) conditions. Standard design and high-temperature resistant design are available.
MK-GT-S (Unbalanced) - Suitable for general river conditions.When this structure is used in flow division conditions, it is only recommended for on-off applications.
Three-way flow division valves divide one fluid stream into two fluid streams,and three-way flow combination valves combine two fluid streams into one fluid stream. The MK-GT series valves are suitable for a variety of applications, including sulfide and chloride stress cracking environments commonly found in the oil and gas production industry.

| NAME | MATERIALS | ||||||||||||||||||||||||||||||||||
| Valve body material | A216WCB,A217-WC6,A217-WC9,A352-LCB | ||||||||||||||||||||||||||||||||||
| Valve core | 17-4 PH | 316 | 316+ overlay hardfacing | ||||||||||||||||||||||||||||||||
| Valve sea | 410 HT | 316 | 316+ overlay hardfacing | ||||||||||||||||||||||||||||||||
| sleeve | 410 HT | 316 | 316 | ||||||||||||||||||||||||||||||||
| Allowable leakage of the valve seat | Class IV,V | Class IV,V | Class IV,V | ||||||||||||||||||||||||||||||||
| Gasket | Wound gaskets (316L + PTFE, 316L + flexible graphite, etc.) | ||||||||||||||||||||||||||||||||||
| Valve cover packing | PTFE packing & reinforced PTFE packing & flexible graphite packing & reinforced flexible graphite packing | ||||||||||||||||||||||||||||||||||
| Operating temperature | WCB Valve body | -29-425℃ | -29-425℃ | -29-425℃ | |||||||||||||||||||||||||||||||
| WC6 Valve body | |||||||||||||||||||||||||||||||||||
| LCB Valve body | --- | -46-232℃ | -46-232℃ | ||||||||||||||||||||||||||||||||
| NAME | MATERIALS | |||||||||||||||||||||||||||||||||
| Valve body material | A351-CF8,A351-CF8M | |||||||||||||||||||||||||||||||||
| Valve core | 316+RTFE | 316 | 316+ overlay hardfacing | |||||||||||||||||||||||||||||||
| Valve sea | 316 | 316 | 316+ overlay hardfacing | |||||||||||||||||||||||||||||||
| sleeve | 316 | 316 | 316 | |||||||||||||||||||||||||||||||
| Allowable leakage of the valve seat | Class VI | Class IV,V | Class IV,V | |||||||||||||||||||||||||||||||
| Gasket | Wound gaskets (316L + PTFE, 316L + flexible graphite, etc.) | |||||||||||||||||||||||||||||||||
| Valve cover packing | PTFE packing & reinforced PTFE packing & flexible graphite packing & reinforced flexible graphite packing | |||||||||||||||||||||||||||||||||
| Operating temperature | -75-200℃ | -196-565℃ | -196-565℃ | |||||||||||||||||||||||||||||||
NOTES:
1) For the material treatment of the valve internals, the operating temperature and pressure range, please refer to the selection criteria for the material treatment of the valve internals.
2) For the valve core of 1/4" and below, only full overlay welding of Stellite alloy is available, and partial overlay welding of Stellite alloy is not provided.
| SPECIFICATION | HYD-C | HYD-S | ||||||||||||||||||||||||||||||||
| Nominal diameter | 1/2 ,3/4,1,1 1/2,2,2 1/2,3,4,6,8 inch | |||||||||||||||||||||||||||||||||
| Nominal pressure | Class 150/300/600 conforms to ASME B16.34 | |||||||||||||||||||||||||||||||||
| Connection method | Flanged (ASME B16.5), threaded or socket-welded NPS 1/2 to 2 (ASME B16.11), butt-welded (all ASME B16.25 nominal pipe wall thicknesses consistent with ASME B16.34) | |||||||||||||||||||||||||||||||||
| Upper valve cover type | Standard bonnet (-18 to 232℃) Extended Type I top bonnet (-46 to 427℃) Extended Type II top bonnet (-101 to 427℃) Bellows type top bonnet | |||||||||||||||||||||||||||||||||
| Filler | PTFE packing, graphite packing, reinforced PTFE, reinforced graphite | |||||||||||||||||||||||||||||||||
| Leakage level | IVLevel | IV Level(Voluntary for Level 5) | ||||||||||||||||||||||||||||||||
| Flow characteristics | Linear | Linear | ||||||||||||||||||||||||||||||||
| Adjustable ratio | 50:1 | 50:1 | ||||||||||||||||||||||||||||||||
Quick replacement of valve internals
Standard quick-change valve internals facilitate on-site maintenance. Even if the valve is on the pipeline, all valve internals can be easily removed from the valve body.
Valve core stability
The robust and durable valve cage guide provides excellent valve core stability, reducing vibration and mechanical noise.
Long service life of valve internals
The valve internals made of hardened materials have excellent wear resistance.
The wall thickness of the valve body is in accordance with 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 valve cover are fastened together as a whole by double-endedstuds, and the design complies with ASME Ⅷ.
The valve body structure allows the material to comply with NACE 0175-2003.