Red-Handle 16 mm Barb to 1/2-Inch Male Thread Valve

Connect and isolate a small drip branch

The stepped barb connects compatible 16 mm tubing to a 1/2-inch male thread. A red butterfly handle adds manual branch control at the transition.

Check fit before assembly

Confirm tubing inner diameter and receiving thread standard. Push tubing fully onto the barb and seal the thread appropriately. Keep pipe strain off the plastic body and leave clearance for the handle. Inspect both connections as pressure rises.

Plan the threaded transition

The pictured valve places a red butterfly handle above a black body with a stepped barb at one end and a male thread at the other. It is useful where a small tubing branch needs local control at its connection to a receiving fitting. Check both ends independently: tubing marked with the same nominal diameter can have a different internal fit, and a matching nominal thread size still requires the correct standard.

Leave access for maintenance

Arrange the branch so tubing does not pull the valve sideways or restrict movement of the handle. Check that water reaches the downstream emitters when open and stops when closed. At the start of the season, inspect the tubing at the barb and check the threaded joint during filling. Depressurize before removing the fitting. Replace damaged tubing ends and reseal a threaded connection as needed before testing the branch again.