The Model 141-2 Needle Valve is an adjustable restriction device installed in the control circuit tubing. The setting of the needle valve meters the flow into and out of the main valve diaphragm chamber, thus controlling the response speed of the main valve. Depending on the application, the needle valve may be used as a closing speed control, opening speed control, or both simultaneously.
Needle Valves shown sizes: 3/4″ & 1/4″
The Model 141-2 Needle Valve is shown on OCV Valve Schematics as:
|EXAMPLE: Shown here on a MODEL 115-3 DIGITAL VALVE
as separate opening and closing speed controls.