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Sink Aspirator with Coupling offers adequate vacuum capacity for many applications and is an economical laboratory tool for use with a 10-50psi water supply. This 6in (152mm) Chapman-style aspirator has a 3/8in (9.5mm) NPT water inlet or adapts to threaded faucets with the included coupling. This unit is nickel-plated with a ball valve to prevent water backflow.
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