Watts Regulator has introduced its B-6111-PEX ball valves. The ball valves have ribbed PEX end connections for use with PEX tubing in 1/2-, 3/4-, and 1-in. sizes with standard clamp rings. The B-6111-PEX quarter turn bubble-tight ball valve and PEX tubing can control flow where flexible PEX tubing is used. Watts Regulator Co.