D51 / D61 / D71 / D91 Centrifugal Pumps

D51 / D61 / D71/ D91 Centrifugal Pumps

MTH Close-coupled centrifugal pumps offer economical performance up to 240 gallons per minute (GPM). Perfect for applications requiring heads to 360 feet. MTH combined the latest concepts in pump design with precision manufacturing, the D Series pumps deliver excellent efficiency and low NPSH requirements. Efficient manufacturing processes and highly optimized mechanical designs control costs. Maintenance costs are kept to a minimum by combining a highly serviceable design with quality components to provide a long service life.

Mechanical Seal Type 21 Buna-N seal is rated to 225°F and up to 175 PSI and is used on the D51, D61, D71, and D91 Pump Series. The carbon seal face mates with a ceramic seat providing years of trouble-free service. The seal cooling jacket high temperature version of the D51 unit uses a Type 21 Viton seal that is rated to 400°F with pressures up to 175 PSI. Alternate seals available upon request.

Limitations

• Discharge Pressure 250 PSI 
• Suction Pressure (Max) 250 PSI
• Suction Pressure (Min) 26” Hg Vac.
• Speed (Max.) 3600 RPM

Temperature

• Standard Construction -20° F
• Ceramic Seal Seat - Water +225° F
• Graph. Imp. Silicon Carbide 
• Seal Seat & Seal Flush +250° F
• Cooling Jacketed 500° F 
• Horsepower 56J Frame 3 HP JM Frame 100 HP