DU146 M Automatic bypass and differential pressure valve for district heating systems

DU146 M Automatic bypass and differential pressure valve for district heating systems
The DU146 M automatic bypass and differential pressure valve is used to maintain a constant differential pressure in a heating system. It reduces flow noise in a system, particularly as thermostatic radiator valves are closed. The boiler return temperature is raised and this reduces corrosion caused by flue gas condensation. In addition, when radiator valves are closed it also maintains flow over the temperature sensor on the boiler to ensure proper operation of external temperature compensation controls. On gas-fired water heaters it guarantees a minimum flow circulation when thermostats or radiator valves are closed.
Specially designed for disctrict heating systems, but can also be used for pump-driven warm water heating systems.
Materials Brass housing, spring bonnet and valve disc, plastic adjuster knob, stainless steel spring, EPDM seals
Body pattern angle
Medium type water or water-glycol mixture according to VDI 2035
Max. media temperature 130 oC
Max. operating pressure 16 bar
Differential pressure setpoint range 0.05 ... 0.5 bar
Port connection type internal threads
Additional description Special versions available on request.
Product descriptionType
Flow rate V = 3 cubic metres/hDU146M-3/4A  PDF
Flow rate V = 10 cubic metres/hDU146M-11/4A  PDF
Załączniki
No. Document type (Language) File name File size
1. Instrukcja montażu PDF DU146-m-pl01r1120.pdf 750 KB
2. Karta katalogowa PDF DU146M -k-pl01r1020.pdf 2028 KB