Specification :

Application
Diaphragm-type safety valves of this type are used to protect
pressurised water heaters according to the require-ments of DIN 4753, Part 1 and DIN 1988.

In accordance with statutory requirements, the diaphragm safety
valve is preset to the required fixed set pressure by the manufacturer
and is sealed with an embossed security cap marked with the test badge and pressure rating to prevent unauthorised tampering with the setting. Subsequent alteration of the setting is
not permitted and is impossible without destroying the security cap.

The preset pressure is embossed on the security cap.
Special Features
• Replacement insert tested to TRD 721
• Easy venting
• Replacement insert makes servicing simple
• Meets KTW recommendations for potable water
• Certified to Pressure Equipment Directive 97/ 23/ EC, Reference
No. CE 0035
• Standardised discharge connection
Range of Application
For closed water heaters in compliance with DIN 4753, Part 1 and
DIN 1988
Tested to TRD 721 for pressure range 1.0 bar to 10.0 bar.
Technical Data
Medium Water
Installation position Horizontal with spring bonnet upwards
Opening pressure Set by manufacturer at 6.0, 8.0 or 10.0 bar
Special settings between 1.0 bar and
10.0 bar are also available
Subsequent alteration of the setting is not
permitted and is impossible without
destroying the security cap
Operating temperature
Max. 95 ° C
Connection size 1/ 2" - 11/ 4"
Valve size is defined by the size of the inlet connection