3-way thermostatic mixing valve Herz Dn25, 20-45°C, with external threads, 1776642

Housing made of forged brass,

Seals made of EPDM,

External thread G, flat-sealing.

Max. differential pressure: 5 bar

Hot water inlet temperature:  100 °C (1 7766 42 / 43 / 44 / 45).

KVS : 4.4

Max. static pressure: 10 bar,

Max. differential pressure: 5 bar,

Max. flow rate: 82 l/min.

HERZ thermostatic mixing valves are essential components in heating and cooling systems, ensuring a stable mixed water temperature regardless of fluctuations in hot and cold water inlet conditions. Designed for precision and reliability, these valves maintain a consistent output temperature, enhancing system efficiency and user comfort. Typical applications include systems incorporating heat pumps, underfloor heating and  heating systems with radiators, where precise temperature control is critical for safety and performance. Valves have integrated anti-scald function, that automatically stops the hot water flow in case of failure of the cold water circuit.

Regulation :

The regulation locking mechanism ensures that the set adjustment remains unchanged by preventing unauthorized or accidental modifications. By removing the fastening screw and repositioning it in the designated locking position between MIN and MAX, the knob is securely fixed. This tamper-proof feature enhances system reliability and prevents unintended alterations, making it particularly suitable for applications where maintaining precise settings is critical. Once locked, adjustments can only be made by authorized personnel, ensuring operational stability.