BSTOCK:PrimoChill SX Pressure Check Valve - TX Matte Black

B stock items are items that did not pass our aesthetic quality standards. They may contain nicks, dents, or other cosmetic defects, but are fully functional. If you don't mind a little character and no retail packaging, these discounted items are just right for you! *Picture only reflects approximate color and not the actual quality you will be receiving which may have several cosmetic defects as stated above. All B Stock Sales FINAL. Returns not available on B Stock items.  The PrimoChill Pressure Check Valve is a stop fitting that allows air to escape once pressure has built up in your system. By installing this on the top of your reservoir or another high point in your system, the pressure check valve will exhaust air to alleviate any pressure build up. Installing this pressure check valve will help eliminate air locks in your loop and make the priming (filling) process of your system much easier. Features Industry Standard Thread Installs in seconds. Specifications Thread: G 1