Review on Highly Efficient 110V NPT3/4'' Domestic Water Circulation Pump With 3-Speeds For Hot Water Recirculation And Solar Heater/Faucet Applications (RS15/6G) by Bob Trapp

Purchased for a hot water recirculation line between master bath and water heater to have instant hot water at sink and shower. Used copper O-ring fitting flex lines to attach to pump and adapt to Poly pipe. NPT threads are not reliable to use and not leak. Major gripe is that there is no place to attach any mounts/brackets/etc. to suspend/mount this under a floor in basement. The only was is to use the pipe as support, mainly at the water heater fill pipe. Due to the nature of how the tank was plumbed, I could not mount in that fashion. Pump operates intermittently via a aquastat to open/close circuit between temp setpoints. 8 months in operation and no issues at this time.