- featuring explosion-proof construction, heavy duty cast aluminum manifolds; spark resistant housings, covers, impellers, muffler towers, and seals; Teflon lip seal; and explosion-proof motors.
- featuring the same explosion-proof construction as the E series with the added benefit of externally driven operation.
- featuring E explosion-proof designs with chemically corrosion resistant treatments, chemical duty motors.
- featuring explosion-proof construction, heavy duty cast aluminum
manifolds; spark resistant housings, covers, impellers, muffler
towers, and seals; Teflon lip seal; and explosion-proof motors. 
- featuring the same explosion-proof construction as the E series
with the added benefit of externally driven operation. 
- featuring E explosion-proof designs with chemically corrosion
resistant treatments, chemical duty motors.