Page 151 - Bürkert

5/2- from 3/2-way Convertible Pneumatic Solenoid Valve, NA-
MUR Ex i Version

G 1/4” NAMUR
6519 NAMUR Ex i • Intrinsically Safe 6519 NAMUR Ex ia
WW C
ohne Handnotbetätigung
• High flow rate
• High reliability
6519 NAMUR Ex ia
4 2
WW H
12
• Corrosion-resistant design
3
1
ohne Handnotbetätigung
4 2 5
12
513

Type 6519 NAMUR Ex i is used for the pneumatic control of double or Envelope Dimensions [mm] (see datasheet for details)
single-acting actuators with a NAMUR adapter plate flange. The circuit
function can easily be changed using an adapter plate. In the 3/2-way
function, feedback of the exhaust air takes place in the spring area of the G 1/8 29 51 11
armature drive. The diaphragm-controlled valve seats work with very low
friction, ensuring reliable switching of the valve even after long shutdown
periods and at ambient temperatures below 0 °C. The valves work with-
out a continuous air consumption. 40
G 1 /4 / NPT 1 /4

Technical Data
Orifice DN6.0 mm 3 173,5
Body materials 2
Pilot valve Stainless steel 1.4305 or brass 1
Main valve Polyamide, glass-fibre reinforced 48 24
Thread insert material Stainless steel or brass, nickel plated 5 4
Seal materials FKM, NBR and PUR 51,5 51,5
Pneumatic connection
Supply ports 1,3,5 Threaded port G 1/4”
Service ports 2 and 4 NAMUR flange acc. to VDI/VDE 3845 32 53
Electrical connection Tag connector acc. to DIN EN 175301-803
Form A (previously DIN 43650) for cable plug 37
Type 2508 (not included). Ensure correct
polarity!
Protection class IP65 with cable plug
Ambient temperature -25 °C to +55 °C
Medium Lubricated or non-lubricated compressed air,
instrument air, nitrogen
Environmental conditions Open air, chemical atmosphere
Response times 1)
Opening 75 ms
Closing 115 ms
1) Measured at valve outlet at 6 bar and +20 °C acc. to ISO 12238.
Opening: Pressure rise 0 to 90%
Closing: Pressure drop 100 to 10%

Options
• With manual override
• High impedance coil

150