4" UNION CONECTION KIT | HCXP6019A Vinyl AVSC Dual Drains with Hydro Stat The gear reduction (5-pack) are

The gear reduction (5-pack) are replacement parts that are made by Hayward

If calcium hardness is present

It installs in seconds: pull the old knob

3900 Sport

4" UNION CONECTION KIT | HCXP6019A Vinyl AVSC Dual Drains with Hydro Stat The gear reduction (5-pack) are4" UNION CONNECTION KIT HCXP6019A Hayward 4" Union Connection Kit (HCXP6019A) is designed to secure connections between your pool's plumbing and Hayward's HCP Series self priming pumps. Functionality: Secure Connections: The kit provides a reliable method to connect the pump to the plumbing system without cutting pipes, ensuring a tight and leak free seal. Ease of Maintenance: Union connections allow the removal of the pump for maintenance or