Pump Union Compression Fitting Tee on Top 1-1/2" Slip with o-ring 

This Union TEE is a space saver and very low profile to fit under tubs with limited space.

Brands: NuWhirl

Pump Tee, 1-1/2" x 1 x 1 Pump Tee Union (601103)

1-1/2 Pump Tee

1-1/2 Pump Tee