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Duplex Sewage Systems

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see Liberty Pump simplex grinder packages and sump box systems - see sewage pumps
see sewage ejection pumps and sewage basin assemblies from Little Giant - see single sewage systems
see float switches and sump pump alarms - see water pressure boosting system from Grundfos
see duplex grinder systems from Liberty - see sewage ejection systems from Zoeller
see Zoeller brand sewage ejection packages - indoor or outdoor installation
see Grundfos domestic circulator pumps - see other water removal systems
see the Takagi "Flash" TH1 tankless water heater

Zoeller dual-pump systems for indoor applications

Package includes:
  • 2 - Automatic pumps: M264 or M267, 115 volts
  • 1 - 10-0804 Smart Pak residential alternator
  • 1 - 31-1105 (30" x 36") Poly-foam basin with 2" vent
  • 2 - 30-0101 Tri-check valves

Duplex system with (2) M264 pumps = $1631.03
Duplex system with (2) M267 pumps = $1783.66
Zoeller dual pump package system

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assembly required


Zoeller dual-pump package systems

Electrical alternating systems includes:
  • 1 - Electrical alternator with 3 floats, alarm light & horn
  • 1 - Duplex fiberglass basin 36" x 36"
  • 2 - 2" or 3" unicheck
  • 2 - Nonautomatic pumps (267 or 268 series pumps)
  • 3 - Control switches or 4 when specified

Dual-pump system with electrical alternator
with fiberglass basin
Pump Unicheck Volts Price
N267 2" 115V $2545.84
E267 2" 230V $2640.99
N268 3" 115V $2611.21
E268 3" 230V $2729.03

Zoeller dual pump sewage package system

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assembly required




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Dual Pump Sewage Systems"What's the difference between simplex and duplex packaged systems?"
Duplex sewage systems from Zoeller Duplex systems contain two pumps and are mainly used when high volumes are needed. The pumps will alternate while pumping low volumes and both pumps will work simultaneously to handle high volumes when needed.

Dual Pump Sewage Systems"My automatic pump stops and starts constantly, how can I make the pump run longer?"
Duplex sewage systems from Zoeller A pump short cycling is a function of the basin diameter and the "on/off" pumping range. Since the basin is in the ground it is unlikely that it can be enlarged. If you have an automatic unit which has a self contained float switch the "on/off" pumping range cannot be adjusted. But with a nonautomatic unit controlled with a pump switch you can have flexibility in the pumping range adjustment. Short-cycling can decrease the service life of a switch assembly. If this occurs, an automatic unit can be converted to operate with an external pump switch which will expand it's pumping range and decrease the amount of short cycling. Installing a check valve in the discharge line will help decrease short cycling.

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