Check Valve In-Line With Unloader Port Inlet (In.) 1 in (F)NPT Outlet (In.) 1 in (F)NPT Brass Max Pressure (PSI) 500 psi Cracking Pressure (PSI) 1 psi Hex Size (In.) 1 1/2 in Flow Range Free Air (CFM) 60 cfm Max Temp (F) 450 Degrees F Horizontal or Vertical Mounting Tap Size 1 in Length (In.) 4 in Stainless Steel Spring Material 15 in Glass Filled PTFE Poppet Brass Seal Pneumatic Control