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Combination Primary and Backup Pump System

Model Number
20% Off Special Price $397.00 Regular Price $499.00
Watchdog BW4000 Combination Primary and Backup Pump System
Combination Primary and Battery Backup Sump Pump System Includes a Basement Watchdog AC pump and a Basement Watchdog battery backup system.
  • Already assembled for easy installation
  • Compact footprint fits in any size sump pit
  • Dual float switches provide dependable activation for each pump
  • Unique monitoring controller sounds an alarm if maintenance is needed
  • " Battery sold separately

The Basement Watchdog Combination sump pump system is designed to provide both primary and backup pumping capabilities. The primary pump will operate as long as it is receiving AC power. If the power is interrupted, or more water is coming into the sump than the AC pump can handle, the backup sump pump will begin pumping automatically. The backup system has unique monitoring features that diagnose a problem and sound an alarm. A light on the display panel of the control unit will indicate the cause of the alarm and the corrective action. The two systems have been preassembled for easy installation.

Model# DFK961 BW4000
Backup System Emergency Special
Backup GPH @10' 1000 GPH 1730 GPH
AC Pump HP 1/3 HP 1/2 HP
AC GPH @10' 2,200 GPH 2,820 GPH

Dual Float Switches: Both Basement Watchdog Pumps have dual redundant floats on each switch. Should one float fail to activate the pump, the second float takes over. The result...added reliability.

Installation: Installation is easy: Cut discharge pipe and remove old unit. Place new unit in sump pit. Connect combination unit to discharge pipe with rubber union. Connect backup controller and battery. Plug in both controllers. System comes with detailed installation instructions complete with pictures and diagrams. combination system iscompact and will fit in a sump pit as small as12” wide and 14” high (the size of a 5 gallonbucket). It measures 18“ inches from thebottom of the pump to the top of the Yconnectorwhere it will be attached to thedischarge pipe.

Click for Watchdog Battery Model # 30HDC140S. Order separately.

More Information
Model Number BW4000
Series Watchdog Battery Backup Sump Pump
Max Flow (GPM.) 55
Max Flow GPH 3300
TDH Maximum (Ft) 30
TDH BEP (FT.) 10.000000
Horse Power (HP) 1/2
Horsepower (IE .5, 1, 1.5, 20) 0.5000
Outlet Connection Type FNPT
Outlet (In.) 1.5
Wetted Materials Acetal-Delrin
Elastomers / O-ring Buna-Nitrile
Voltage (V) 115
Voltage (Range) 110-120
Phase (Ø) Single (1)
Motor Frequency 60
Motor Hermetically Sealed
Speed (RPM.) 3450
Self Priming Yes
Max Operating Temperature (F) 105
Viscosity Milk 3.20 cp 40.00 ssu
Shaft 416SS
Mechanical Seal No
Drain Yes
Port Rotation Yes
Weight (Lbs) 21.000000
Warranty (YRS.) 2