Push-button bubbler, self closing, with built-in adjustable volume control which controls flow from 20 p.s.i. to 105 p.s.i. LKSS1141A - Flexi-Guard® Bubbler*. Stainless steel body with a 1/2 (13mm) straight pipe thread connection. Requires single faucet hole. Ship. Wt. 2.3 lbs.