Compatible Boumatic DK1X Liner – Pack of 4 (Vented) The Compatible Boumatic DK1X Liner – (Vented) is a high-quality pattern replacement liner set designed for milking systems that require vented DK1X specification liners . Correct liner selection is essential for maintaining stable vacuum conditions, consistent milk flow, and good teat health throughout the milking cycle. These liners feature a vented design , allowing controlled air admission to support smooth milk flow and stable cluster performance. Vented liners can help reduce vacuum fluctuations, improve liner stability, and contribute to more consistent milking across all teat cups. Each liner has a length of 310mm , with a 23mm hole head and an 11mm connection , ensuring accurate fit within compatible Boumatic DK1X shells and clusters. Matching the correct dimensions is important to prevent liner slip, ensure correct pulsation, and support efficient milk-out. Supplied as a pack of four , this set is ideal for replacing all liners in a single cluster at the same time, helping maintain balanced performance and hygiene. Replacing liners together is recommended to ensure even wear and consistent operation across the cluster. As