Handy, three-way stopcock shuts off the vacuum supply quickly and easily with the turn of a valve! Serrated tubulations accept 1/4" to 3/8" i.d. tubing. Removable leakproof plug is made of chemical-resistant, non-stick Teflon®. Three-way valve allows for connection of two or all three arms. Pressure rated to 35 psi.
Flinn Catalog/Reference Manual Page 264
Flinn Middle School Catalog/Reference Manual Page 206