Mazzei Injector [#1584, 1-1/2" MIP, PP] (1584A-PP) aircontrols The Hayward rear header set

The Hayward rear header set is designed for compatible Spa Xi heater applications where the hi-limit support section of the rear header assembly needs replacement

Improves system fit confidence and usability

and this Poolvergnuegen version is a gray 10 foot hose designed for 2-wheel and 4-wheel cleaner applications using the PVLHP1900GR reference

Helps reduce leaks

Recommended when the existing valve part is leaking

Mazzei Injector [#1584, 1-1/2" MIP, PP] (1584A-PP) aircontrols The Hayward rear header setThe Mazzei injector is designed for compatible ozone and chemical injection applications where venturi based introduction of gas or solution is needed. An injector is useful because it helps draw ozone or other treatment media into the water stream, supporting more dependable water treatment performance. This replacement is especially useful when the original injector is clogged, cracked, damaged, worn, or no longer drawing correctly. Matching the