Pentair CHK-100 Series Bronze Commercial 10 HP Three Phase 220-440V - 011659 OmniPL Sensor The EC75A has:

The EC75A has:

and P-R336A-EP-X

Pentair IntelliFlo VSF Literature

Hayward Item Code: FDXLGSV0002

for easier installation and operation

Pentair CHK-100 Series Bronze Commercial 10 HP Three Phase 220-440V - 011659 OmniPL Sensor The EC75A has:COMMERCIAL BRONZE POOL PUMP BUILT SPECIFICALLY FOR COMMERCIAL POOLS Bronze volute and pot with coated iron foot and flanged connections (6" suction, 4" discharge). Pentair Item Code: 011659 Features Large commercial pump with S S basket. Easy serviceability. All bronze construction for strength and durability. 6" suction and 4" discharge for maximum capabilities. Heavy gauge stainless steel strainer basket with an open area 5 times the area of the