STAINLESS STEEL 1 x 11 or 1.25 x 14 PRESSURE TANK TEE W/UNION or W/O UNION for WATER WELL (1 x 11 + UNION) All tees 100% lead free #304 STAINLESS STEEL 1" x 11" + UNION - 11" is overall tee measurement; 1" npt thread tank side 1" male thread / 3/4" female thread on the in and out sides (2) 1/4" ports on top for pressure gauge, pressure switch (2) 1/2" ports out front for boiler drain, pressure relief valve