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VG2831TM
The VG2831TM from Johnson Controls is a three-way mixing flanged globe control valve that operates without an actuator. It is designed with a flow coefficient of 49 Cv and a valve stroke of 3/4 inch, making it suitable for various applications requiring controlled fluid mixing.
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Technical specifications for VG2831TM
| Manufacturer | Johnson Controls |
|---|---|
| Product Type | Three-way mixing flanged globe control valve (no actuator) |
| Product Line | VG2000 Series |
| Part Number | VG2831TM |
| Flow Coefficient | 49 Cv |
| Valve Stroke | 3/4 in. (19 mm) |
| Trim/Flow Characteristics | Brass Trim, Modified Linear Flow |
| End Connections | Flat-Faced ANSI Class 125 Flange Connections |
| Stem Type | 3/8 in. threaded stem |
| Operating Temperature Range | 2 to 138°C (valve fluid) |
| Valve Body Rating | ASME B16.1, Class 125 |
| Maximum Allowable Pressure/Temperature | Steam: 35 psig at 138°C; Water: 175 psig at 66°C, 125 psig at 138°C |
| Leakage | 0.1% of max. flow |
| Rangeability | 6.5:1 |
| Body Material | Cast iron with a black lacquer finish |
| Max. Recommended Operating Pressure Drop | 35 psig (241 kPa) |
The Johnson Controls VG2831TM is engineered as a three-way mixing globe valve, specifically designed without the inclusion of an actuator. This valve provides a flow coefficient of 49 Cv, which facilitates efficient fluid dynamics suitable for numerous applications. With a valve stroke measurement of 3/4 inches (19 mm), it effectively manages flow control.
Constructed with a robust body made of cast iron, it features a black lacquer finish for added durability. The valve utilizes brass trim, incorporating modified linear flow characteristics that enhance operational precision. The end connections follow the flat-faced ANSI Class 125 flange standards, allowing seamless integration into existing piping systems. The stem is a threaded type measuring 3/8 inches.
Operating temperatures for the VG2831TM range from 2°C to 138°C, making it versatile for liquids and steam. It is capable of withstanding maximum allowable pressures of 175 psig at 66°C and 125 psig at 138°C for water applications, while for steam, it is rated at 35 psig at 138°C. Additionally, the leakage rate is maintained at 0.1% of the maximum flow, ensuring reliable operation.
Moreover, the valve possesses a rangeability factor of 6.5:1, which indicates its effectiveness in adjusting flow rates to accommodate varying system demands. The maximum recommended operating pressure drop across this valve is capped at 35 psig (241 kPa), which ensures stable performance during operation.
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