VIGOUR>> VMV Series Precision Low-Pressure Metering Valves
VIGOUR's VMV Series low-pressure metering valves are engineered to deliver precise and repeatable flow control in demanding analytical, laboratory, and industrial applications. Manufactured with a 316 stainless steel body and designed in compliance with the VS001B process specification, these valves provide reliable performance at working pressures of up to 2000 psig (138 bar).
Available in both straight and angle flow patterns, the VMV Series supports panel mounting and offers optional vernier handles to enable finer flow adjustment and enhanced control accuracy.
Repeatable Flow Adjustment
Optional vernier handles allow adjustment resolution of up to 1/25 of a turn, making the valves well suited for applications requiring high reproducibility and precise control.
Broad Configuration Options
The VMV Series is available with a wide range of end connections, including tube fittings, male and female NPT threads, and VFS male connections, ensuring compatibility with diverse system requirements.
Robust Material Construction
All wetted components are manufactured from 316 stainless steel, providing excellent corrosion resistance and long-term durability across a variety of operating environments.
Flexible Installation
A compact, panel-mount design helps save space and simplifies integration into both new and existing system layouts.
Technical Performance
The VMV Series includes three primary valve types, each offering distinct pressure-temperature ratings, orifice sizes, and shutoff capabilities:
| Series Type | Temperature Range | Max Working Pressure (bar) | Orifice (in.) | Shutoff Service | Stem Taper |
|---|---|---|---|---|---|
| A Type | -23°C to +204°C | 137 | 0.032 (0.81 mm) | No | 1° |
| B Type | -23°C to +204°C | 68.9 | 0.056 (1.42 mm) | No | 3° |
| C Type | -23°C to +204°C | 68.9 | 0.128 (3.25 mm) | Yes | 6° |
Note: During adjustment, downstream pressure should not exceed 500 psig (34.4 bar). L Series valves are not recommended for vacuum or gas shutoff applications, nor for repetitive liquid shutoff.
Flow Characteristics
The VMV Series offers predictable and stable flow control with a linear response over the adjustment range. Flow coefficients (Cv) for straight-pattern valves range from 0.004 to 0.16.
Typical airflow performance at 70°F (20°C) is shown below:
| Cv | Pressure Drop (bar) | Air Flow (std L/min) |
|---|---|---|
| 0.004 | 0.68 | 1.1 |
| 3.4 | 2.8 | |
| 6.8 | 5.6 | |
| 0.03 | 0.68 | 9.3 |
| 3.4 | 25.4 | |
| 6.8 | 42.4 | |
| 0.16 | 0.68 | 56.6 |
| 3.4 | 181 | |
| 6.8 | 323 |
Vernier Handle
Helps ensure repeatable flow adjustments.. Provides readings accurate to 1/25 tur. Kits contain all parts necessary to adda Vernier handle to an existing valve.
VMV metering valves are available in multiple port sizes and connection styles. Ordering codes follow a standardized format, for example: SS-VMV-AL-02-Y
- SS = Stainless Steel
- VMV = Valve Series
- AL = Angle Pattern, Type A
- 02 = 1/8 inch size
- Y = Vernier Handle option
Conclusion
VIGOUR's VMV Series low-pressure metering valves combine precision engineering, durable materials, and flexible configuration options to meet the demands of critical flow-control applications. With well-defined performance data and scalable ordering options, the VMV Series provides a reliable solution for both standard and customized fluid handling systems.
