USE WITH THE MAXLINE TUBING SYSTEM 1/2″ Tubing Inlet x 1/4″ Female NPT Outlet In wall tubing or surface mount tubing Includes: 90120 – Aluminum Block 50120 – Drain Valve 50135 – Brass Plug 50130 – 45 Degree Brass Elbow M8001 – 1/2″ Tubing Adaptor Or Optional Shutoff Valve Use Rapidair K6221 or K7221 Quick Coupler