The Jandy 3-Way valve never needs lubrication and is guaranteed to never fail. The diverter seals are made of a proprietary material that will not leak or break during the life of the valve. The CPVC construction is resistant to temperature and chemical fluctuations and is designed to allow maximum water flow while maintaining structural strength.
Knife Valves are designed specifically for restricting water flow and, as such, are best suited for full open or full closed operation. These valves work just as well as their metal counterparts, are less expensive, and are resistant to freezing.
Check Valves limit the flow of water to one direction. This prevents water from flowing backwards or backing up into your pump or filter. Check valves should be used only in areas under pressure where water is flowing upwards.