Burkert 0344 Panduan Petunjuk Pengoperasian - Halaman 5
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Operating principle 3/2-way valve Type 0343:
Standard Version
A
C
(NC)
P R
B
D
(NO)
P R
The externally controlled valve, Type 0343, requires auxiliary control air which
1)
is at least 2 bar above operating pressure
Protection class:
IP65 in accordance with DIN EN 60529 /
IEC 60529 with cable plug, e. g. Bürkert
Type 2508
4.2 Application conditions
Ambient temperature:
0 °C ... +55 °C
Medium temperature:
0 °C ... +90 °C
Continuity A → R normally open,
connect vacuum generator to R,
external air to P, auxiliary control air to Z
Continuity P → B normally open,
connect vacuum generator to R,
external air to P, auxiliary control air to Z
The following values must also be observed for valves with
UL/UR approval:
Valve
Seal
Orifice
Fluid
type
material
Valve
temperature
seat
°F / °C
[mm]
0340
EPDM 12.0
-4...+194 °F
-20...+90 °C
+41...+194 °F
+5...+90 °C
NBR
8.0
+32...+194 °F
12.0
0...+90 °C
20.0
+41...+194 °F
25.0
+5...+90 °C
0344
NBR
8.0
+32...+194 °F
12.0
0...+90 °C
(Vacuum-
20.0
version)
Viscosity (Type 0340):
21 mm
english
Ambient
Fluid
temperature
(non-
hazardous
°F / °C
Fluids)
-4...+131 °F
dry air,
-20...+55 °C
inert gas
+41...+131 °F
water
+5...+55 °C
+32...+131 °F
dry air,
0...+55 °C
inert gas
+41...+131 °F
water
+5...+55 °C
+32...+131 °F
dry air,
0...+55 °C
inert gas
/s
2
5