Page 145 - Bürkert

5/2-way Solenoid Valve for pneumatics, Ex i-Version

6519 Ex i G 1/4”

• Intrinsically safe version
• High flow rate
• High switching reliability
• Corrosion-resistant construction

4(B) 2(A)
12
5(S) 3(R)
1(P)

The 6519 Ex i valve consists of an intrinsically-safe pilot control and a Envelope Dimensions [mm] (see datasheet for details)
pneumatic amplifier. The diaphragm-controlled valve seats work with
very low friction, ensuring reliable switching of the valve, even after long
shutdown periods.

Technical Data
Orifice DN8.0 mm
Body materials
Pilot valve Stainless steel 1.4305 or brass
Main valve Polyamide, glass-fibre reinforced
Thread insert material Stainless steel or brass, nickel-plated
Seal material NBR and PUR
Pneumatic connection
Supply ports 1,3,5 Threaded port G 1/4”
Service ports 2 and 4 Threaded port G 1/4” C
Electrical connection Tag connector acc. to DIN EN 175301-803
Form A (previously DIN 43650) for cable plug
Type 2508 (not included). Ensure correct
polarity!
Protection class IP65 with cable plug see datasheet for details
Ambient temperature -25 °C to +55 °C
Medium Lubricated or non-lubricated compressed air, A
instrument air, nitrogen
Environmental conditions Open air, chemical atmosphere A B C
For use in zone 1, 2, 21 and 22 B 53 32 173.5
Response times 1)
Opening 75 ms
Closing 115 ms G 1/8 29 51
1) Measured at valve outlet at 6 bar and +20°C acc. to ISO 12238. 11
Opening: Pressure rise 0 to 90%
G 1/8
Closing: Pressure drop 100 to 10% 29 51
11 40
Note: Valves with Ex i coil are not suitable for block construction.

Options 40 G 1 /4 / NPT 1 /4
• With manual override 14 173.5
G 1 /4 / NPT 1 /4
• High impedance coil 136 2 8 - 4.3 tiefe 36 ø 4.3
24
107.5 12 ø 4.3 4 107.5

13.5 25.5 25.5 ø 4.3 39.5
ø 4.3 24 43 24 43
32 32
53 53

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