Scienceware* Check Valves
Useful when connecting a vacuum line to a filter flask. Polyethylene valves operate positively and instantly in any position. Arrows indicate direction of free flow. Neoprene disk, no metal.
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Colonial Scientific has teamed up with the industry leaders, Fisher Scientific and VWR, and now offers their entire product line. Colonial Scientific provides any part from the Fisher Scientific site with a part number.
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