Oakton* Portable Water-Jet Aspirator Pumps

Simple-to-use pumps create a strong, pulseless vacuum up to 29.5 in. Hg (74 cm). They feature an air suction rate of 12 to 14 liters per minute at each of two ports. They contain a built-in circulating pump that continuously forces water across a series of venturies for quiet, clean and efficient operation. Use the built-in 10 liter water tank to eliminate water waste, or connect the pump to a faucet for continuous water feed. Special two-compartment design reduces motor noise and allows easy access to the water tank. Built-in overflow port and gravity drain allow the pump to be connected to a tap for easy water changes. Pumps operate on the Bernoulli effect. A fast-moving stream of water passes a port in the line; that motion creates a pressure drop down to the vapor pressure of water at that temperature (0.67 in. at room temperature). Since vapor pressure is inversely proportional to water temperature, the pressure is increased by lowering that temperature.
Useful in biotech labs for use with electrophoresis gel dryers and in chemistry labs for use with distillation and filtration apparatus, and to enhance rotary evaporator efficiency. 14.4 x 9.6 x 14.4 in. (360 x 240 x 360 mm) [W x D x H]. 115V, 50/60 Hz, 2.8 A.