Polypropylene plastic valve with neoprene valve disk stops reverse flow of liquid when pressure is interrupted. Useful when connecting a vacuum line to a filter flask Recommended maximum pressure 20psi (1034 Torr) Autoclavable

Can be gas or chemically sterilized 65 total pieces in 13 sizes One-piece, reusable clamp squeezes shut for a leakproof seal. Made of chemical/corrosion-resistant, rustproof nylon. Diameters range from 0.246 to 1.610 inches. Temperature range is 32 to 194°F/0 to 90°C.