The enclosed pumps are upgraded to have both a 5 and 1 micron filters to add additional filtering to keep the nozzles clean from debris. The pumps are also fitted with a sound dampening sheet to reduce the pump's noise level roughly 10db's over our direct drive models. Our misting pumps are designed to operate at 1000 psi. The 110V pumps have a standard plug for your home outlet and garden hose adapter to fit your outdoor spigot for the water supply. We use a 3/8" compression fitting on the outlet of the pump to attach to high pressure nylon tubing.