The Waterway 602-4357 is a single-port, top-access on/off valve turn knob and cap assembly used to regulate water flow or control waterfalls in hot tubs and spas.
Technical Specifications
- Component Type: Valve Cap / Turn Knob
- Manufacturer: Waterway Plastics
- Part Number (MPN): 602-4357
- Face Diameter: 2.5 inches (2-5/8" total outer dimension)
- Plumbing Size: Designed for 1-inch valve assemblies
- Handle Style: Textured 5-scallop grip
- Text Markings: Molded with "ON" and "OFF" text
- Stem Fitment: Square bottom section insert
- Standard Color: Textured dark gray
Compatible Valve Assemblies
This cap replaces the handle on these specific Waterway 1-inch plumbing components:
- 600-4367: 1" Slip x 1" Slip Single Port Gray Valve
- 600-4361: 1" Top Access Valve Assembly
- 600-4387: 1" Dedicated On/Off Spa Valve
Hot Tub Brands Using This Part
Waterway is an industry-standard OEM parts supplier. This specific cap configuration is used natively by several major spa manufacturers to operate water features and air controls:
- Sweetwater Spas: Extensively utilized for waterfall on/off dials across multiple model generations.
- Sundance Spas: Found on selected luxury lines equipped with 1-inch internal bypass waterfall systems.
- Cal Spas: Integrated into zone-control air systems and targeted fountain jet valves.
- Dynasty Spas: Frequently deployed to control localized auxiliary water stream pressures
