Backwash filter pureliQ:RD

The backwash filter pureliQ:RD is designed for the filtration of drinking and industrial water. It may be used in the pressure as well as in the negative pressure range. A backwash, however, can only be performed if the filter is used in the pressure range. Solid substances, such as rust flakes or sand grains, may cause serious corrosion damage to pipes and fittings. The backwash filter pureliQ:RD makes sure that it does not come to that. It represents the important first stage of water treatment and effectively protects water installations in households, trade and industry from malfunctions and corrosion damage.
The unfiltered drinking water flows into the filter from the inlet side and then from the outside in through the filter element and to the pure water outlet.
Depending on the filter element, foreign particles the size of > 100 µm (DVGW version) are thus retained.
Our new backwash filter pureliQ:RD ensures reliable filtration day for day thanks to the manually operated backwash that has to take place every 6 months. During the backwash process, the water flows through the filter element in the reverse direction. The particles retained in the filter are washed out via an outlet, together with the backwash water.
In addition, the pureliQ:RD version features a pressure reducer. The backwash filter pureliQ:RD is designed according to the stipulations of DIN EN 13443-1 and intended for installation into the drinking water pipe according to DIN EN 806-2 (installation immediately downstream of the water meter).

  • Lickety-split: installation within mere minutes thanks to pre-assembled components
  • Ergonomic: rotatable click-type connection flange for convenient installation in all kinds of mounting positions
  • Accurate: hand wheel & interval indicator to precisely set the pipe pressure and maintenance interval
  • Protected: well-thought-out design with inspection window to protect against UV light
  • Moveable: flexible drain connection for a precisely fitting installation and perfect tightness
  • Powerful: Grünbeck’s Vortex technology for residue-free cleaning thanks to water turbulences
  • Reliable: hose adapter for a clean backwash even without a drain connection
  • Smooth organic design
  • Connection diameters: ¾“, 1“, 1 ¼“
  • Nominal pressure: PN 16
  • Water/ambient temperature: 30°C/40°C
  • Pore size: 100 μm

Installation requirements

Please observe local installation directives, general guidelines and technical specifications.
The installation site must be frost-proof and ensure the filter’s protection from chemicals, dyes, solvents, vapours and direct sunlight.
The installation site must be easily accessible for maintenance purposes.

Scope of supply

  • Backwash filter pureliQ:RD, complete with filter element and pre-assembled click-type connection flange
  • Water meter screw connection
  • Seals
  • Hose adapter
  • Operation manual



For additional information on technical details, please refer to the product data sheet which is available for download.