Product review (4 stars): Initial operation is strange, but works properly after a few gallons
The install took a couple of retries and required some light tapping/shoving to stop the water flow from having random air pockets. The directions were straightforward enough, but the water pressure initially was rather dynamic (especially with intermittent air pockets).

After removing and re-installing a few times, and after pushing more water through the system, things started to work better. Operation 'normalized' only after the first few gallons so perhaps the initially oddities were just a part of the process? Documentation had nothing about air pockets though, so there was some cause for concern.