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Design and principle of operation
3 Design and principle of
operation
(see Fig. 2)
The medium flows through the valve body (1)
as indicated by the arrow. The position of
the plug (3) determines the flow rate across
the area released between plug and valve
seat (2).
The set point springs (7) are loaded by the
set point adjuster (6). When relieved of pres-
sure (p
= p
), the regulator is opened by the
1
2
force of the set point springs.
The downstream pressure p
is tapped downstream of the valve and
transmitted over the control line (14) to the
operating diaphragm (12) where it is con-
verted into a positioning force. This force is
used to move the valve plug (3) according to
the force of the set point springs (7). The
plug stem (4) with the plug is connected to
the actuator stem (11) of the actuator (10).
The spring force is adjustable at the set point
adjuster (6). When the force resulting from
the downstream pressure p
adjusted pressure set point, the regulator
closes proportionally to the change in pres-
sure.
12
to be controlled
2
rises above the
2
3.1 Technical data
Process medium and scope of application
Type 2373 Universal Pressure Reducing
Valve to control the downstream pressure p
in applications with seawater.
For pressure ranges from 0.8 to 16 bar ·
DN 15 to 50
· PN 40 · Suitable for gases
1)
and liquids up to 80 °C.
The regulator closes when the downstream
pressure p
rises.
2
_
Larger valve sizes on request
1)
Dimensions in mm · Weights in kg
The lengths and heights in the dimensional
drawing are shown in Fig. 3.
2
EB 2534 EN
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