Page 33 - Bürkert

3/2-way Solenoid Valve with pivoted armature pilot drive
for low pressures and vacuum

0344 G 1/4” - G 1”

• Pivoted armature pilot drive,
media isolated
• Smoothly operating servo-piston
2(A)
• For neutral gases with low pressures
• For technical vacuum 1(P) 3(R)
• Manual override as standard 4(B)
10
12
1(P) 3(R)

The pilot-controlled 3/2-way valve, Type 0344, with a smoothly operating Envelope Dimensions [mm]
servo-piston requires a differential pressure of 0.25 bar for complete
opening and closing. In the circuit functions NC and NO, it is particularly
suited for use with neutral gases with low pressures and for vacuum,
even with dry running.

Technical Data
Orifice DN8.0-40 mm
Body material Brass
Coil material Epoxy
Coil insulation class H
Seal material NBR
Medium Neutral gases, compressed air, vacuum
Medium temperature 0 °C to +90 °C
Ambient temperature Max. +55 °C
B
Voltage tolerance ± 10%
Duty cycle 100% continuous rating C
Electrical connection Cable plug for Ø 7 mm cable, A
acc. to DIN EN 175301-803 Form A
(supplied as standard)
Electr. power consumption DC: 8 W, AC: 30 VA (inrush), 15 VA (hold)
Protection class IP 65 with cable plug
Installation as required, preferably with actuator upright

Response times 1)
Orifice Opening Closing
[mm] [ms] [ms] DN A B C
8 25 25 8 46 33 154.5
12 30 30 12 46 33 179.5
20 40 40 20 62 52 215.5
25 70 70 25 82 60 237.5
40 120 120
40 117 88 274.0
1) Measured at valve outlet at 6 bar and +20 °C
Opening: pressure rise 0 to 90%, closing: pressure drop 100 to 10%

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