About this union/fitting
This 1-1/2″ MBT x 1-1/2″ MPT tailpiece (31-3543) is a genuine Hydro Air OEM plumbing component designed for spa jet assemblies and plumbing connections. The union-style design with male buttress thread on one end and male pipe thread on the other ensures secure, leak-free connections in your spa’s water circulation system.
Built to Hydro Air’s exact specifications, this tailpiece delivers the precise fit and durability your spa requires. At Bubbles Supply, we guarantee an exact fit for your application and back every part with our comprehensive 1-year warranty. Orders ship same-day to get your spa running quickly. When installing, hand-tighten the union connection first, then use appropriate thread sealant on the MPT end before final assembly to prevent leaks.
