screw clamp

(redirected from Hand screw)
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screw clamp

Etymology: OFr, escroe, screw; AS, clam, fastener
a device, usually made of plastic, equipped with a screw that can be manipulated to close and open the primary IV tubing for regulating the flow of IV solution. Turning the screw clockwise closes the tubing; turning it counterclockwise opens it. Different positions of the screw between the open and the closed positions allow the IV fluid to flow at different rates. Compare roller clamp, slide clamp.
References in periodicals archive ?
The new Tire Pressure At-A-Glance Tire Safety Gauge easily hand screws on to each tire's valve stem; staying in place while continuously monitoring the pressure in each tire.