Samson 46-7, Инструкция по монтажу и эксплуатации

Страница: 13 / 36

EB 3131-1 EN 13
Design and principle of operation
3.1 Technical data
Process medium and scope of application
Flow rate and differential pressure control
with pressure control in district heating sup-
ply networks and industrial plants · Valves
DN 15, 25 and 40 · Pressure rating PN 16
and 25 · Suitable for liquids up to 150 °C
The valve closes when the flow rate, differen
-
tial pressure or pressure rises.
Regulator for installation in the low-pressure
pipe, e.g. plant return flow pipe of a district
heating substation.
Min. differential pressure Δp
min
The minimum required differential pressure
Δp
min
across the valve is calculated as fol-
lows:
Δp
min
= Δp
restriction
+
(
V
)
2
K
VS
·
Δp
min
Minimum differential pressure across the valve in bar
Δp
restriction
Differential pressure created at the restriction for measuring the flow rate
V
·
Adjusted flow rate in m³/h
K
VS
Valve flow coefficient in m³/h
Dimensions and weights
The lengths and heights in the dimensional
drawings are shown on pages 15 and
16.
Dimensions in mm · Weights in kg
The dimensions and weights of valves with
flanged bodies (DN 40) are the same as
valves with screwed-on flanges.
Note