Homewerks VGV-2LH-B3CB Gas Ball Valve, Female Thread x Female Thread, Brass, 1/2-Inch 2-Piece forged brass body 1/2 PSIG and 5 G CSA CR91-002 Certified for use on piping ANSI Z21.15 / CSA 9.1 Certified for appliances and appliance connectors ASME B16.44 Certified for use in above ground piping systems up to 5 PSI