Application
The Horizontal Water Storage Tank DF ZWH is used for raw and treated water storage purposes in water intakes, water treatment and pumping stations. The device may be used also as a grid distribution tank.
- water retention for the peak distribution,
- ensuring necessary access of disinfectants to water,
- ensuring necessary water supply for the fire-fighting purposes and filters cleaning.
The structure enables to use the tank either in above or underground applications.

Structure
The tank is made of welded engineering or stainless steel. The standard device is equipped with boiler ends inlet, outlet, overflow and release stub pipes. The diameters may be adjusted on customer’s demand. The above ground tank version is insulated with heat insulating material protected against mechanical damage and weather influence. The cover colour may be at customer’s choice [RAL range]. The engineering steel tank is protected against corrosion with:
- from inside – thick layer of epoxy enamel used for contact with food products, ar. 300 µm thickness,
- from outside – epoxy anti-corrosion background ar. 140 µm thickness, and bituminous fiberglass based paint of colour selected on order [RAL range].
Different materials may be used on demand. Additional part included is strainer with return flow valve. The underground tank should be assembled in previously prepared and stabilised trench, while the above ground version should be assembled on previously prepared foundation.

Equipment
- Inlet, outlet, overflow and release stub pipes.
- Hatch duct with inspection hatch.
- Ventilation duct.
- Insulation secured against damaging and weather [for the above ground tanks].
- Additional anti-freeze control with heat wire [option].
- Tank filling control fittings – mechanical – floating valves, or electronic – water level probes [option].
- PZH (National Institute of Hygiene) certificate.