This John L. Schultz "Aqua-Dynamic" stop valve measures 1/2 in. and is designed for a solderless connection to a copper tubing. It is equipped with a cast-iron handle and ideal for use with water, oil or air. Its stop-and-waste valve allow the draining of the non-pressure side when closed. This part meets the NSF/ANSI 372 lead-free standards and is designed for a -29 °C to 93 ° C. (-20,2 °F to 199,4 °F) temperature range.