Seal unused 3/4" manifold ports in your spa plumbing system with this Smart Plumb barb plug. Designed to cap off individual outlets on hot tub manifolds, this plug creates a watertight seal where ports aren't being utilized.
The insertion section features a 7/16" outside diameter that's intended to be permanently bonded inside compatible manifold barbs using appropriate PVC adhesive.
Compatibility varies by manifold manufacturer and model. We stock various plug designs to match different manifold brands, so confirming your measurements before purchase is essential to ensure proper fit.
