Most control valves and faucets have internal mechanisms that substantially reduce water flow, even when they are completely open. They are also commonly difficult to operate.
These shut-off valves overcome both problems. The internal mechanism is a cross-drilled ball that can be fully opened or fully closed in a quarter turn.
The polished stainless-steel ball in an all-brass body operates with a 3-1/2" long handle that is a breeze to turn. The oversized internal openings dramatically increase water flow compared with other in-line valves. They make wonderful in-line shut-off valves to let you control sprinklers without having to run back to the hose bib every time.
For cantankerous faucets, you can attach one directly, turn the faucet on full and then use the smoothly functioning ball valve for shut-off or general control the rest of the summer. The valves have standard male and female fittings.
Available in two styles, straight or Y-valve. Both are excellent valves at remarkable prices.