Precision Preset Piston Valve for Positive Displacement Flow Meter Systems
Reliable and precise shut-off is critical in liquid metering systems, especially when dealing with high-value fuels or chemicals. The V-XX Series Preset Piston Valves are engineered to deliver smooth, controlled, and repeatable operation, minimizing pressure loss while maximizing system safety and accuracy. These valves are ideal for a wide range of industrial applications and can handle varying flow rates with precision.
The V-XX Series features mechanically actuated pistons that are designed to mount directly on the meter outlet. Whether manually operated or linked to a preset counter, these valves provide either single-stage closure for low flow applications or two-stage closure with a dwell period to prevent hydraulic shock. This flexibility allows operators to fine-tune system performance according to specific process requirements, ensuring that each shut-off is controlled, predictable, and safe.
A key design feature of the V-XX Series is the pressure-balanced dash pot mechanism. By directing vector forces at right angles to the valve opening mechanism, the system achieves effortless operation regardless of line pressure. This ensures a soft, precise closure without opposing forces, improving the longevity of both the valve and the connected meter system. The valves can be indexed in 90° increments, offering versatility for up, down, or side-facing outlets in diverse piping configurations.
Globally, these valves are recognized under several names depending on the market. In North America and Europe, they are often called Preset Piston Shut-Off Valves. In Southeast Asia and the Middle East, operators may refer to them as Meter Outlet Control Valves, while in Latin America and Africa, the term Flow-Regulated Piston Valve is commonly used. Regardless of the terminology, the function is consistent: smooth, accurate, and reliable flow control for positive displacement meter systems.
The V-XX Series is available in aluminum with square flange options and covers multiple flow ranges: V-50-AL supports up to 550 LPM for M-40 (1.5”) and M-50 (2”) meters, V-80-AL supports up to 1150 LPM for M-80 (3”) meters, and V-100-AL supports up to 1700 LPM for M-100 (4”) meters. Its robust design makes it suitable for fuel terminals, oil depots, chemical plants, and bulk liquid distribution systems worldwide.
In conclusion, the V-XX Series Preset Piston Valves are not just accessories—they are essential components for controlling liquid flow, protecting meters, and ensuring safe, accurate operation in industrial metering systems. For facilities requiring precise shut-off performance and long-term reliability, this series offers a proven, globally recognized solution.
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