At the highest end of the scale, our bronze Normblock pumps push up to 3000 GPM. Now a stocked item, we’ve dramatically reduced our lead times on these largest of pumps. The Normblock Series has a robust horizontal single-stage design. This commercial pool pump is perfectly suited for aquatic facilities, waterparks, fountains, aquaculture and pools with elevated brine concentration.


  • Available in 40, 50 & 60 HP Models.
  • Superior slow (1750 rpm) running design reduces vibrations resulting in quiet operation.
  • Heavy duty energy efficient totally enclosed fan cooled (TEFC) motor, Class F insulation, protection class IP 55. Sealed ball bearings need no lubrication.
  • Shaft coupling allows motor to be replaced without replacing the mechanical seal.
  • A high wear, rugged Carbon/SiC - EPDM mechanical seal allows for long life and long maintenance intervals. SiC/SiC seals available upon request.
  • Impellers are made of Bronze and individually balanced for optimum performance.
  • Stainless steel shaft with 316 stainless steel protective shaft sleeve.
  • The pump is ceramically coated.
  • Optional all plastic strainer tank for horizontal flooded suction applications.
  • Every pump is tested to factory & customer's specifications before leaving the Speck factory.

Please Note: (The noise level from both the motor and pump are greatly influenced by how they are installed. Consideration should be given to minimize vibration and noise transmission.)