Push-button bubbler, self closing, with built-in adjustable volume control which controls flow from 20 p.s.i. to 105 p.s.i. LK1141A - Flexi-Guard® Bubbler*. Push-button valve bubbler designed so that water never comes in contact with lead containing materials. Built-in adjustable water volume control. Heavy chrome plated body with a 1/2 (13mm) straight pipe thread connection. Requires single faucet hole. Ship. Wt. 2.3 lbs.