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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 4 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 |
25 |
25 |
25 |
25 |
16 |
16 |
10 |
| Special version DN |
15...25 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
| Kvs |
0.16/0.4/1/2.5/3.2 |
5 |
5 |
8 |
12.5 |
20 |
32 |
50 |
| Differential pressure
∆p |
25 |
16 |
10 |
| 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 |
PN 40 |
| Length of capillary tube |
3 m (special version : 5, 10 or 15 m) |
◘
Material (WN = DIN Material
Number)
| Type 4 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 Iron
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 |
| Bellows blousing |
St 35.8(WN 1.0305) |
| Balancing bellows |
stainless steel WN 1.4541 |
| Body gasket |
Graphite on metal core |
| Type Thermostat
2231-2241 |
| 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 DINIIEC 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).
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