The 07 Brass Ballcock is the standard against how brass ballcocks are judged. It is heavy patterned brass construction, anti siphon design & is completely adjustable. The 07 is dependable & quiet & operates equally well at high or low pressures. This valve is easily serviced while installed. The 07 Brass Ballcock is available in standard lengths of 10”, 11 ½” & 12 ½” sizes.