3-Way Brass T-Fitting with 1/4" Hose Barb for Vacuum Gauge
Tee Fitting with 1 Hose Barb.
The VA-3530 tee fitting allows you to mount your liquid-filled gauge directly on your "Little Tuffy" Vacuum Pump (or any pump with a 1/4" NPT inlet).
Simply screw the nipple end into your pump, orienting it so your gauge will sit on top.
Screw in your gauge; then just place your hose over the nipple.