Check Valve 5-Pack
The ThriftyVac Check Valve is an industrial-grade check valve adapted to work with both the ThriftyVac Housing and the ThriftyVac Mason Jar Lid.  It handles both air and liquids and resists pressures as high as 300 KPa (approximately 3 atmospheres).  The ThriftyVac Check Valve is sold mainly for those users interested in building their own custom food packing applications, or as replacements parts.The ThriftyVac Check Valve features a barb on the inlet stem to facilitate engagement with mating components, and a trapezoidal-shaped exhaust port for mating with vacuum pumps.The ThriftyVac Check Valve comes with an O Ring pre-installed on the inlet stem.  This O Ring is only needed for use with the ThriftyVac Mason Jar Lid and may be removed when vacuum packing food bags.  The O Ring comes pre-lubricated with food-grade silicone O Ring grease which is necessary when used on the ThriftyVac Mason Jar Lid.The ThriftyVac Check Valve is sold in groups of five.