From the manufacturer

Features: Jenn Air 80CR

Once properly installed

Standard Drop-In Sink

the accessory allows you to fully comply with ADA and other barrier-free accessibility guidelines

Hayward Check Valve, 3/4 in, Single, Y Spring, PVC, Socket x Socket - SLC10075SEU Urinal Scren From the manufacturerItem Check Valves: Check Valve; Flow Design: Single; Mechanism and Body Design: Y Spring; Body Material Valves: PVC; Pipe or Tube Size Check Valves: 3 4 in; Connection Type Check Valves: Socket x Socket; Cracking Pressure Check Valves: 2 to 15 psi; Mounting Orientation Check Valves: Horizontal, Vertical; Seal Material Check Valves: EPDM; Max. Temp. Valves: 140 Degrees F; Min. Temp. Valves: 40 Degrees F; Max. Water Pressure Valves: 150 psi @ 70 Degrees