Jetstream Milk Line St/Stl Adapter – 2″ x 4″ The Jetstream Milk Line St/Stl Adapter – 2″ x 4″ is a high-performance stainless steel connector engineered to create a secure, hygienic, and leak-free link between 2-inch and 4-inch milk line systems. Designed for heavy-duty dairy operations , it delivers exceptional reliability, smooth product transfer, and long-lasting durability — ideal for both on-farm setups and large-scale processing plants. Crafted from premium corrosion- and chemical-resistant stainless steel (St/Stl) , this adapter withstands harsh cleaning agents, moisture, and extreme temperatures. Its precision-engineered design ensures a tight, accurate fit that minimises turbulence, preserves milk quality, and maintains system efficiency. The polished internal finish enhances hygiene, preventing bacterial build-up and meeting rigorous dairy sanitation standards . Installation is quick and simple, with a robust construction that guarantees years of dependable use . Whether upgrading or maintaining your milk line system, this adapter provides a trusted solution for smooth, efficient milk transfer . When properly fitted, the Jetstream Milk Line St/Stl Adapter – 2″ x 4″ helps