Cole-Parmer® Threaded Check Valves, Gamma-Stable Polycarbonate, 1/8" NPT(M)

Dependable backflow prevention with the added security and flexibility of threaded connections

Integrate seamlessly from a threaded port to a hose barb connection while safeguarding against backflows by installing a threaded check valve. All check valves feature a 1/8” NPT(M) thread for an easy, leak-free connection to manifolds, sensors, and instruments. Gamma-stable polycarbonate body and silicone diaphragm construction offers excellent purity and compatibility with gamma irradiation.

The gamma-stable polycarbonate body is ISO 10993 tested for biocompatibility, making these check valves ideal for pharmaceutical and analytical applications. The silicone diaphragm opens at 0.5 psi and closes at 1.9 psi ensuring unidirectional flow. A free-floating, disk-based silicone diaphragm allows installation in any position. Single-barb design accepts flexible tubing.