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Product Description

Mechanical disconnectors of this type are suitable for the protection of drinking water systems as required by EN 1717 "The technical regulation of drinking water systems". Their purpose is to protect systems against back pressure, back flow and back syphonage of non-potable water into the public water supply network. Mechanical disconnectors of this type can be used to provide protection up to and including liquid category 4 (toxic, very toxic, carcinogenic and radioactive substances). The changeover from shutoff to flow positions can be by means of an hydraulic or electrical/electronic actuator. 

Technical Properties


Cold drinking water  

Liquid category (EN1717) class 4
DN size 100 mm
Port connection flanges
Mounting position horizontal
Minimum inlet pressure 1,5 bar
Nominal pressure PN10
Max. media temperature 40 oC
Flow capacity Kvs 125
Body material cast iron GG25
Body finishing powder coating
Power supply 230V 50Hz
Additional Descriptions
  • Optimal protection of the drinking water supply system
  • Enhanced protection against back pressure, back flow and back syphonage into the water supply network
  • Shut-off position visually indicated on the spring bonnet
  • Compact construction 
  • Powder coated inside and outside - Powder used is physiologically and toxicologically safe
  • Low pressure loss
  • All materials are KTW approved
Set pressure 0,5 bar
Maximum inlet pressure 10 bar