Mazzei Venturi Injector [3/4" Barb, #684] (KYNAR-0684-K) productsunlimited The Sundance Spas PCB circuit

The Sundance Spas PCB circuit board is designed for compatible spa control applications where the main board needs to be replaced to restore system operation

Supports cleaner and more dependable plumbing fitment

This type of part is especially useful when the main filter body remains serviceable and the issue is centered on the cartridge element itself

The gray scalloped face helps this Waterway internal blend well across a wide range of shell and trim colors

A low-flow heater is useful because it supports systems that operate with reduced circulation while still delivering dependable heating in a form matched to the supported design

Mazzei Venturi Injector [3/4" Barb, #684] (KYNAR-0684-K) productsunlimited The Sundance Spas PCB circuitThe Mazzei venturi injector is designed for compatible ozone and chemical injection applications where a barb connected venturi device is needed. A venturi injector is useful because it helps draw ozone or other treatment media into the water stream, supporting more dependable mixing and treatment performance. This replacement is especially useful when the original injector is clogged, cracked, damaged, worn, or no longer drawing correctly. Matching