Full cast iron Motors barrelsFast heat dissipation, not easily deformed Cast iron MiddleMatch split mechanical sealCooling fast, excellent waterproof Two-pole motor lift
Full cast iron motor barrel heat quickly, easily deformed Full cast middle seat with dual mechanical seal and heat dissipation, good waterproof two-pole motor High Lift
Full cast iron motor barrelHeat fast, not easy to deformationAll cast iron middle seatCollocation and double mechanical sealQuick heat radiation and good water proofingHigh lift motor.