WT20X — Featuring a 5.5 HP Overhead Valve engine, full frame, 2" suction and discharge ports, 170 gallons per minute discharge capacity, and Oil Alert.

WT30X — Featuring an 8 HP Overhead Valve engine, full frame, 3" suction and discharge ports, 343 gallons per minute discharge capacity, and Oil Alert.

WT40X — Featuring an 11 HP Overhead Valve engine, full frame, 4" suction and discharge ports, 608 gallons per minute discharge capacity, and Oil Alert.