New Ewal Vacutite (Acquired by Parker Hannifin in 1997) 1/4" Stainless Steel VCR Poppet Check Valves, Approximately 1 PSI Cracking Pressure, Part Number Unknown.  Each bid quantity is for One (1) Check Valve.  You may bid / buy any number, up to the total quantity available above.

These were purchased at a semiconductor manufacturer liquidation a few years ago, and they have some minor dust on the packages from being in storage. They appear to be a quality product, and probably interchangeable with Parker, Swagelok, etc.

NOTE: (22) are still sealed in the original factory bags, but the last two (2) sold in this listing have been opened. Only the first three (3) purchased will have the VacuTite /Electropolished labels. The remainder have less/no labels.