Components and accessories

Set for DUPLEX uninterrupted operation systems with valves 1″/1.25″

Artnumber: DUPLECO1
Article: DUPLECO1

The set is intended for creation of the DUPLEX uninterrupted operation system. It provides simultaneous operation of filters which doubles capacity and covers peak loads for water demand.   

A restaurant, hotel, boiler plant, laundry or any production process will be supplied with the purified water, since even during regeneration one of the filters will be working.

Key advantages:

  • easy and convenient to install at the control valve

  • simple design, long and reliable operation

  • does not burn out

  • connected without microswitch

  • does not create water hammers

Technical parameters

  • Connection size 1″

  • Material – noryl, polypropylene

  • Operating pressure 1.4 to 8.6 bar

  • Operating temperature +4 to +43 °C

  • Installed only on cold water mains  


Consists of two NHBP (no hard water bypass) valves, one set of vertical adaptors, two microswitches, two cables.  

In DUPLEX uninterrupted operation systems two filter vessels are switched on and work simultaneously, leading to double capacity. Every vessel has a separate control unit to manage filtration and regeneration modes.  

To prevent supply of unpurified water to consumer during regeneration of one of the filters, at the outlet line of each filter NHBP valve is installed. The NHBP valve is connected with the cable to the special connector of the filter’s control valve. In the beginning of regeneration, the control valve switches the NHBP valve into the off-state. By this, it blocks the access of unpurified water to consumer. After the regeneration the NHBP valve returns to its on-state.

The set requires regular maintenance which involves disassembling and thorough cleaning of the flow distributor and other elements of the NHBP valve. The service should be performed by qualified staff.