Flow and differential pressure controller
The DKH 512 is a flow and differential pressure controller with a wide range of applications. Perfect for use in district heating substations, central heating and air-conditioning systems. Compact, and featuring an electrophoretically painted ductile iron body for optimum rust protection, the DKH 512 also features two inline valves that keep noise to a minimum. A manual shut-off function ensures easy maintenance.
Technical description
Application:
District heating substations, primary side, as well as in central heating and air-conditioning.
Heating and cooling systems with variable flow.
Function:
Differential pressure control over the load and flow control.
Closes at increasing flow or Δp.
Dimensions:
DN 15-80
Pressure class:
PN 25
Max. differential pressure (ΔpV):
1600 kPa = 16 bar
Pressure drop in the throttle (Fc):
12, 20 or 40 kPa.
Setting range:
Differential pressure fixed at 15, 40, 60 or 100 kPa.
Temperature:
Max. working temperature: 120°C
Min. working temperature: -10°C
Media:
Water and neutral fluids, water-glycol mixtures.
Material:
Valve body: Ductile iron EN-GJS-400
Diaphragms and gaskets: EPDM
Surface treatment:
Electrophoretic painting.
Marking:
TA, DN, PN, Kvs, Δp, Material and flow direction arrow.
Flanges:
DN 15-50 (optional): According to EN-1092-2:1997, type 16.
DN 65-80: According to EN-1092-2:1997, type 21.