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All couplers are "push-to-connect" and offer automatic pin-type connections
Pump "runaway" is prevented with ARO-STOP® shut-off valves. Pump runaway happens when the material container becomes exhausted, causing the pump to cycle rapidly and inefficiently. When the material container is empty or a fluid line on the pump's outlet side is broken, the ARO-STOP® valve shuts off the air supply, protecting the pump. Use in conjunction with oil or grease pumps.