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◘
Technical Data
Pressures stated in bar (gauge). The permissible
pressures and differential pressures specified are
limited by the Pressure Temperature Diagram and the
nominal pressure ratings acc. to DIN 2401.
| Type 1 Control Valve |
PN 16 / 40 |
| kvs-values and permissible
differential pressures ∆P ☼ |
| Standard version DN |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
| kvs |
3.2 |
5 |
8 |
12.5 |
20 |
32 |
50 |
80 |
125 |
| Differential pressure ∆P |
25 |
25 |
14 |
12 |
6 |
4 |
2.5 |
1.25 |
0.75 |
| Special version DN |
15 ... 25 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
| kvs |
0.16/0.4/1/2.5/3.2 |
5 |
5 |
80 |
12.5 |
|
| Differential pressure
∆P |
25 |
14 |
12 |
|
| Leakage rate |
≤0.05 % of kvs valve |
| Permissible temperature of the Valve |
See
Pressure-Temperature Diagram |
|
| Type 2231, 2241 Control Thermostat |
size 15 - 150 |
|
| Set point range |
-10 ...+90 °C, 20... 120
°C, 50...
150 °C |
| Permissible
ambient temperature at the set point adjustment cylinder -40 to + 80 °C |
| Permissible excess temperature at the sensor |
75 °C above the actual set point |
| Permissible pressure at the sensor |
PN 40 |
| Length of capillary tube |
3m (special version: 5, 10 or
15m) |
☼ = The
differential pressure refers to the pressure upstream of the valve with
steam and the pressure head of the pump with water.◘ Material (WN = DIN
Material Number)
| Type 1 Control Valve |
| Nominal Size |
DN 15 to DN 100 |
| Nominal pressure |
PN 16 |
PN 25 / 40 |
Valve body and
connection flange |
Cast Iron
GG-25
WN 0.6025 |
Cast Steel
GS-C25
WN 1.0619 |
Stainless
Steel
WN 1.4581 |
| seat / plug |
Stainless Steel WN 1.4059
/ WN 1.4301 |
| Plug stem / spring |
WN 1.4301 / WN 1.4301 |
| Body gasket |
Graphit on Metal core |
Distance piece
Distance piece stem |
Brass (special version: WN 1.4301)
Stainless Steel: WN
1.4301 |
| Type 2231, 2241 Thermostat |
| Operating element |
Brass,
Nickel - Plated |
| Sensor |
Brass, Nickel - Plated |
| Capillary tube |
Copper,
Nickel - Plated |
| Thermowell with treaded nipple |
Brass Nickel Plated
(special version stainless steel) |
 ◘ Flow Diagram of Water
The values shown are
valid for a fully-opened
control valve.
Control valve sizing for other media according to DIN/IEC 534, parts 2-1 and
2-2, with following terms:
FL = 0.95 and XT = 0.75
◘
Accessories
If the operating conditions affect the reliability of
the operating element, an extension piece and I or a distance piece is
mounted between the control valve and the operating element.
The extension piece is needed for temperature
above 150 °C or 220 °C respectively (See Pressure-Temperature Diagram).
The distance piece is needed for operating
pressure above 16 bar. Furthermore there is provided a thermo well to
prevent corrosion resulted from direct contact between the sensor and fluid
and also easy installation of thermostat.
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