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A couple of years ago I found a Variable Speed Pump whose 8-speed selection could be accomplished externally via a 3-bit digital interface. I began intermittently designing a custom DIY automation controller around that pump, and am now at the point where I want to buy it, but cannot find it...

Recommendations, please. Also, what material, if any, should fill the small gap between the thermowell and the sensor probe? (West-Central Florida)

Regarding a Jandy Valve Actuator (JVA), Model 2444 (or equivalent): My inference is that the JVA only draws ~0.75 A from its relay-switched 24 Vac supply while it is moving. That once it finishes rotating to the cam-defined angle, a microswitch opens the current path to the motor. Is that...

The threaded rod (onto which my filter cover's lock-nut assembly screws) became unscrewed from the molded threads in the base of the filter assembly. I'm being told it is non-repairable and that I must buy a new filter assembly. Is that factual? Or is there an epoxy or helicoil solution that...

My pre-existing roof-mount solar panels installation lacks a check valve in the return path. I bought a Jandy 7305, whose documentation states that it should be installed horizontally, or vertically with flow ascending. Why can I not install it vertically with flow descending? I want the water...