Prevent back pressure with aspirator-type vacuum pumps using the Thermo Scientific™ Nalgene™ Vacuum Check Valve and Pressure Connector. Designed for use with 1/4 in. (6.35mm) to 5/16 in. (7.94mm) ID tubing, they work best between 10- and 28- in. Hg.

• Two-piece design is easy to disassemble for cleaning
• Silicone diaphragm prevents back pressure

Note:

Not for use with liquids.

Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days thereafter.

Disclaimer to internal research use restriction: Any restrictions on the purchaser to utilize the product(s) for internal research purposes only does not apply to the product(s) on the web pages associated with this statement.