The Air Valve 4523-20C-D012 is a specialized valve designed for controlling the flow of air in various industrial and commercial applications. With its focus on efficiency and reliability, this valve is suitable for use with air as the primary media, making it an essential component in pneumatic systems. Built to last and perform at high levels, this valve is a valuable addition to any plumbing or hydraulic setup requiring precise control over air flow. .YOU WILL RECIEVE A BRAND NEW ONE. WATCH VIDEO!!WORKS AND MOUNTS EXACTLY LIKE VERSA IF NOT BETTER for the price you can’t beat it!! I’ve been using these for about 4 years now with no problems..