Part number 229-8031 is a black version of the Waterway Poly Storm Gunite massage jet internal.
It features a 3-3/8" textured, 5-scallop face and a thread-in installation style.
Like the other "Storm" series parts you've asked about, this specific massage jet is widely used across many major hot tub brands that rely on Waterway Plastics for their jetting systems:
Artesian Spas: A primary manufacturer using the threaded Poly Storm series for specialized massage configurations.
Marquis Spas: Utilizes these high-flow massage internals in various therapeutic seating arrangements.
Aruba Spas: Listed as a manufacturer that uses these threaded Poly Storm components for replacement and original equipment.
Dynasty Spas: Frequently incorporates Waterway Storm series jets (both directional and massage styles) in their models.
Viking Spas: Uses the Poly Storm thread-in series as a standard massage jet option in their portable spa lineup.
Clearwater Spas: Often employs the black textured scalloped face for a high-contrast look in light-colored shells.
Custom Concrete (Gunite) Spas: Because this is a "Gunite" style jet, it is the industry standard for custom-built in-ground concrete hot tubs where jets screw into permanent wall bodies.
Technical Identification
Design: Massage (pulsating/multi-nozzle) style that provides a lively massage.
Face Style: 3-3/8" Textured Scalloped face in Black.
Installation: Thread-in style.
Flow Rate: Rated for approximately 10 GPM at 10 PSI.