7-1434-01 Hose Barb fits on DEL Ozone Injector Manifolds (some, not all).  DEL Ozone injector manifolds are typically used for in-ground pools and spas, or portable spas that are really old and don't have ozone hook-ups.  The black hose barb can get brittle and crack over time, so replace them annually, especially in hot, dry climates.

Which Hose Barb do you need?

• If your DEL Ozone Injector Manifold was built in 2004 or after AND you're sure your injector has male components, this 7-1434-01 Hose Barb is correct.  It has threads on the inside so you screw this hose barb ONTO the Mazzei Injector.  It has 3/4" FPT x 1/4" HB

• If your DEL Ozone Injector Manifold was built in 2004 or prior AND you're sure your injector has female components, the 7-0127 Hose Barb is the one you need.  It has threads on the outside so you screw it INTO the Mazzei Injector

• IU-201 (replaced with IU-211; see below)
• IU-206 (replaced with IU-211; see below)
• IU-211 (used in kit 9-0210-11)