Check Ball Assembly f/ Bucket Lids

Check Ball Assembly for Bucket Milkers. Fits on nipple extension beneath lid to prevent backflow into the milk line. Does NOT fit on Coburn items: 140425, 140427, 140435, 3100032, 3100033, 3100035 or 3100036. Recommend of use on Fresh Cow Lids. Includes ball, cage and adjustable clamp.