Bürkert Servo-assisted 3/2-WAY Solenoid Valve for Pneumatic Systems

Type 6518 is a pilot-operated 3/2-way valve and Type 6519 is a 3/2, 5/2 or 5/3-way valve. Together they form a series. The valves can be used individually or on blocks. They operate without continuous air consumption and are used to control single- or double-acting actuators. The use of high-quality materials allows the valves to be used even in outdoor and chemically aggressive environments. The series includes devices with Ex approval and NAMUR flange design. With the monostable valve circuit functions C, D, and H, a safety level of SIL2 can be achieved in accordance with IEC 61508, depending on the architecture of the safety system.

Circuit function

3/2-way

Operating pressure

0–10 bar

Medium temperature

-10–55 °C

Seal

NBR, PUR

Body

Polyamide, reinforced glass-fibre

Threaded bushing

Brass (stainless steel on request)

Manual override

Standard

Orifice

DN 8...DN 9

Pneumatic module

MP07

Thermal insulation class

of Polyamide coil class B

Compressed air quality

ISO 8573‑1:2010, class 7.4.4 2.)

Duty cycle

100 % continuous operation

Opening

Pressure build-up 0...10 %

Closing

Pressure reduction 100...90 %

Operating medium

Neutral medium (e.g. lubricated or oil-free compressed dry air)

Supply connection 1, 3, 5

Threaded G ¼, NPT ¼

Working port 2, 4

Threaded G ¼, NPT ¼

Auxiliary pilot air port

M5

Degree of protection

IP65 with cable plug

Installation position

As required, preferably with actuator upright

HS Code

8481.80

• Burkert 6518
• Buerkert 6518
• Bürkert 6518
• Type 6518
• Burkert Type 6518