Waterway Poly Storm Jet Internal [4" FD] [Twin Roto] [5-Point Scallop] [Threaded] [White] (229-8170) controlsystems A lock-nut like this is

A lock-nut like this is useful because it helps secure the pressure gauge properly

1-1/2 inch MPT by 1-1/2 inch union configuration

Designed for compatible spa pump applications

A jet body in this format is useful where the plumbing setup is intended for water-only service without an air connection at the body

The Raypak control bezel cover is designed for compatible 206A

Waterway Poly Storm Jet Internal [4" FD] [Twin Roto] [5-Point Scallop] [Threaded] [White] (229-8170) controlsystems A lock-nut like this isThe Waterway 229 8170 Poly Storm jet internal is designed for compatible threaded jet assemblies and features a 4 inch face diameter with twin roto action, 5 point scallop styling, and a white finish. A part like this is useful because it restores an advanced rotating style jet pattern while keeping the visible trim bright and clearly defined at the spa surface. The threaded format helps this Waterway internal remain version correct for the assemblies