To keep your boat running smoothly and efficiently all season long we provide a wide range of boating accessories Browse from the wide range of products and choose the right boat accessories depending on your needs preferences and budget Features . In Line Check Valve 0 5 in Barbs. Allows flow in one direction only. Safeguards against backsurge up to 100 PSI Specifications . Size 0 5 . Weight 0 2 lbs