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Control Valves
GL7, Micro Flow Globe Control with Diaphragm Actuator
GL7 Model, Micro Flow Globe Control Valves
Valution's Model GL7, Micro Flow series is designed with a traditional straight and 90 degree angular pattern flow path structure with a high 'FL factor'.
Generally, the body size is applied to 1/2"~1", the pressure rating is limited to ASME 150~2500#, and the adjustable flow rate range is limited to Rated Cv 0.00013~4.5.
This model can implement EQ-%, linear, and modified-% flow characteristics with the shape of the contoured plug. The body is streamlined, S-shaped and 90-degree angled, with less fluid resistance and plenty of space around the trim.
Since the model has a very low rated flow rate, careful attention should be paid to the conditions of use and selection such as the flow range, temperature, pressure, and connection method to be controlled.
This model can apply a spring diaphragm, cylinder and electric motor type actuator.
Traditional E/P Positioners and Smart and HART Positioners are selectively applied.
GL7, Model Selection & Numbering System
- V10
- -
- GL
- 7
- 1
- 1
- 1
- *B
| Actuator Type | Model | Body Type | Trim Type | Flow Characteristics | Plug Type |
|---|---|---|---|---|---|
| V10. Spring Diaphragm V20. Spring Cylinder V90. Electric Motor V01. Other Type |
GL | 7. Micro Flow | 0. Undefined 1. Un-balanced 3. Hani, 1-stage (Multi-hole) 4. Hani, 2-stage 7. Breeze Trim (Disk Stack) 9. Custom Trim |
0. Undefined 1. Linear 2. Equal % 3. Modified % 4. Quick Open 9. Custom Char. |
0. Undefined 1. Contoured 4. Cascade 5. Micro 9. Custom |
*B : Bellows Bonnet
GL7, Micro Flow Globe Control with Diaphragm Actuator
GL7 Model, Product Range
| Body Style | Straight Globe and 90° Angle | ||
| Body Size | 1/4“, 3/8”, 1/2“, 3/4”, 1“ NPT or RC | 1/2“, 3/4”, 1” | 1/2“, 3/4”, 1” |
| End Connection | Female Threaded Ends | Flange Ends | Welding Ends |
| Pressure Ratings | ANSI Class 150 to 2500 | ||
| Flow Characteristics/td> | EQ-% : Larger than Rated Cv= 0.013 Linear & Quick Open : All Cv |
||
| Bonnet Style/td> | Standard, Extension, Bellows according to Temp. ranges | ||
| Rangeability/td> | 15:1 ~ 50 : 1 | ||
| Leakage Class/td> | Standard : Class IV, Optional : Class V & VI | ||