Cole-Parmer Venturi Vacuum Pump, 0.5 cfm, 28.0"Hg

These new pumps take advantage of the venture effect-as a stream of compressed air exits a constricted orifice the resulting pressure drop draws air through a vacuum port. Since they require no oil or electricity, the resulting vacuum (up to 29.5 inch Hg) is clean and efficient. With no moving parts or electrical hazards, these pumps are also intrinsically safe. The remarkably compact size of these pumps enables you to design vacuum systems with smaller, less expensive components and reduced maintenance costs. Each AO-78165-00 (except 79165-40) includes a replaceable silencer that reduces noise levels up to 30 percent while offering minimal resistance to air flow. Select the pump AO-78165-00 best suited to your specific application. AO-78165-00 78165-20 includes a vacuum gauge which provides easy visual monitoring-helpful when troubleshooting. We recommend an air filter upstream of the pump to prolong service life. Filter should have a Pore size of 50 µm or smaller. Order our 75300-92 filter/regulator below. No moving parts ensures long life with low maintenance. Venturi pumps are air-powered-require no electrical power source or lubricant. Place these compact pumps close to application for fast response and minimal vacuum loss.