WILO Extract FIRST 304 EM/A submersible pump

Submersible multistage pump with integrated control unit. With the basic version, no additional accessories are needed except for the tap at the end of the hose/pipe. Suitable for private utility and rainwater supply, especially for toilet flushing and irrigation. Ideal for installation in shallow wells, cisterns and reservoirs.

Basic properties

• Pump body and impellers made of composite plastic
• Max. dive 5 m
• Max. number of switches 20 times per hour
• Max. water temperature 40 °C

It is integrated in the pump

• Switching unit with factory-set pressure
• Protection against dry running
• Thermal and current motor protection
• A small expansion tank protecting against pressure shocks and a dripping faucet
• Check valve
• Valve for self-bleeding of hydraulics

SE version

The SE version has a side connection for external suction. The most common way of use and installation is to pump rainwater from a storage tank for toilet flushing and garden irrigation. The pump is installed at the bottom and sucks in the cleanest water from the tank through the floating suction filter, because most of the dirt is settled at the bottom of the tank or floats on the surface. It can also be installed next to the tank by connecting at its bottom.