Astral Pool Sight Glass Kit (4404120706) potterbrumfield and this Intermatic version is

and this Intermatic version is an SPST 115 volt model with override capability using the PB913N66 reference

Helps restore proper vent transition support

Helps restore related barb-style plumbing support

Because heater parts can look similar across different brands and model years

The SPX1105Z2 is a practical replacement fitting for compatible Hayward systems that need renewed hose-elbow support and cleaner plumbing performance

Astral Pool Sight Glass Kit (4404120706) potterbrumfield and this Intermatic version isThe Astral Pool sight glass kit is designed for compatible valve applications where visual monitoring of water condition or flow during maintenance is needed. A sight glass is useful because it gives the user a direct view into the line, helping make service tasks like backwashing more informed and more efficient. This replacement kit is especially useful when the original sight glass is cloudy, cracked, leaking, or no longer dependable. Replacing it