Self-operated Regulators Type 2373 Pressure Reducing

Self-operated Regulators
Type 2373 Pressure Reducing Valve for Corrosive Media
Applications
Pressure regulators for set points from 0.8 to 16 bar · Valve
sizes DN 15 to 50 1) · Nominal pressure PN 40 · Suitable for
liquids and gases up to 80 °C
The Type 2373 Pressure Reducing Valve controls the pressure
downstream of the valve (p2) to the adjusted set point pset point
within the range between 0.8 to 16 bar.
Special features
• Low-maintenance proportional regulators requiring no
auxiliary energy
• All wetted parts are free of non-ferrous metal
• Wide set point range and easy set point adjustment over a
nut
• Soft-seated plug for high shut-off requirements
Versions
Type 2373 Pressure Reducing Valve consisting of:
Actuator with rolling diaphragm made of EPDM, FPM or NBR
Valve with body made of corrosion-resistant steel 1.4408
Nominal sizes DN 15 to 50
ANSI version
Special version
With special materials for applications involving sea water:
1.4538, duplex 1.4470 · Nickel-based alloy: 9.4610 · With
flanges in higher pressure ratings · Other special materials on
request
Accessories
Screw joint to connect control line
Control line kit for pressure tapping directly at the body
1)
Fig. 1 · Type 2373 Pressure Reducing Valve
Larger nominal sizes on request
Associated Information Sheet
T 2500 EN
Edition October 2013
Data Sheet
T 2534 EN
Principle of operation
The medium flows through the valve (1) as indicated by the
arrow. The position of the valve plug (3) determines the flow
rate across the area released between the plug and seat (2).
To control the pressure, the set point springs (7) are tensioned
by the set point adjuster (6) so that the valve is opened by the
force of the set point springs when it is relieved of pressure
(p1 = p2).
The downstream pressure p2 to be regulated is tapped
downstream of the valve, transmitted over the control line (14)
to the operating diaphragm (12) where it is converted into a
positioning force. The positioning force is used to adjust the
valve plug (3) depending on the force of the set point springs.
The plug stem (5) together with the plug is connected to the
actuator stem (11).
The spring force can be adjusted at the set point adjuster (6). If
the force resulting from the downstream pressure p2 exceeds the
pressure set point adjusted, the valve closes in proportion to the
change in pressure.
6
7
10
11
12
14
5
Installation
In normal cases, install the regulator in a
horizontal pipeline with actuator in an
upright position.
Refer to EB 2534 EN for further details on
installation.
– The direction of medium flow must
correspond with the arrow on the
valve body.
– Install a strainer upstream of the valve.
2
p2
p1
1
3
Type 2373 Pressure Reducing Valve
1
2
3
5
6
7
10
11
12
14
Valve body
Seat
Plug with soft sealing
Plug stem
Set point adjuster
Set point springs
Actuator
Actuator stem
Operating diaphragm
Control line
Upstream pressure p1
Downstream pressure p2
Fig. 2 · Functional diagram
2
T 2534 EN
Table 1 · Technical data · All pressures in bar (gauge)
Type 2373 Pressure Reducing Valve
Nominal size
DN 15 to DN 50 1)
Nominal pressure
PN 40
80 °C 2)
Max. perm. temperature
Max. perm. differential pressure Dp
See Table 3
Set point ranges
0.8 to 2.5 bar · 2 to 5 bar · 2.4 to 6.3 bar · 4.5 to 10 bar · 8 to 16 bar
Leakage rate acc. to IEC 60534-4
Metal-seated plug
Soft-seated plug
£ 0.05 % of KVS (leakage class I)
£ 0.01 % of KVS (leakage class IV)
Actuator
Actuator diaphragm area
1)
See Table 4 · Dimensions and weights
Larger nominal sizes on request
20 °C for sea water (approx. 3.5 % salt content) with duplex 1.4462/1.4470 or 40 °C with super duplex 1.4410/1.4469
2)
Table 2 · Materials · Material number according to DIN EN
Valve
Valve body
Stainless cast steel 1.4408
Seat and plug
CrNiMo steel
Soft sealing
EPDM, FPM, NBR or PTFE
Seal
Graphite with metallic core
Actuator
Diaphragm cases
1.4301
Diaphragm
EPDM, FPM or NBR
Table 3 · KVS coefficients and max. perm. differential pressures
Nominal size
Standard version
DN 15
4
DN 20
6.3
DN 25
8
DN 32
16
DN 40
20
DN 50
32
3
Max. perm. differential pressures Dp
KVS coefficients
Special version
Standard version
Special version
1 · 2.5
10 bar
14 bar
10
16
4 bar
10 bar
8 bar
T 2534 EN
Dimensions
H
H1
L
Type 2373 Pressure Reducing Valve
Fig. 3 · Dimensions
Table 4 · Dimensions in mm and weights in kg
Type 2373 Pressure Reducing Valve
Nominal size
DN
Length L
Valve dimensions
0.8 to 2.5 bar
20
25
32
40
50
130
150
160
180
200
230
Height H1
55 mm
Height H
560 mm
Height H
560 mm
Height H
560 mm
Height H
Weight
in kg, approx.
560 mm
575 mm
Æ D = 170 mm, A = 80 cm²
Æ D = 170 mm, A = 80 cm²
19
20
20
23
26
29
Weights apply to regulators with a diaphragm area of A = 80 cm². For A = 160 cm², add 4 kg.
Ordering text
Type 2373 Pressure Reducing Valve
DN …, PN …
Set point range .... bar
Optional accessories
Special version …
SAMSON AG × MESS- UND REGELTECHNIK
Weismüllerstraße 3 × 60314 Frankfurt am Main · Germany
Phone: +49 69 4009-0 × Fax: +49 69 4009-1507
Internet: http://www.samson.de
Specifications subject to change without notice
T 2534 EN
2013-10
1)
1)
575 mm
Æ D = 170 mm, A = 80 cm²
Actuator housing
Actuator housing
575 mm
Æ D = 170 mm, A = 80 cm²
Actuator housing
8 to 16 bar
575 mm
Æ D = 170 mm, A = 160 cm²
Height H
4.5 to 10 bar
575 mm
560 mm
Actuator housing
2.4 to 6.3 bar
72 mm
Æ D = 225 mm, A = 160 cm²
Actuator housing
2 to 5 bar
Set point ranges
15