BURKERT Type 6524 (Model 204710) is a 2 × 3/2-way solenoid valve designed for pneumatic applications. The 2 × 3/2-way valve variant is a combination of two pilot flipper solenoid valves Type 6144 and one pneumatic seat valve. The flipper action system allows the switching of high pressures combined with low power consumption and short switching times.

This compact valve features a 4.0 mm orifice, operates on 24V DC, and handles a pressure range of 2.5 to 10 bar. It is equipped with a manual override as standard, facilitating easy testing and maintenance.

General Technical Data

Property	Value
Material (Seal)	FKM, NBR, PUR
Material (Body)	PPS, polyamide
Weight	40 g (2 × 3/2-way)
Manual override	Standard
Orifice	DN 4.0
Duty cycle	100 % continuous operation
Switching frequency	Approx. 1000 c.p.m.
Switching time	Opening: <10 ms, Closing: <10 ms
Operating voltage	24 V DC (±10 % voltage tolerance)
Nominal power	2 × 0.8 W
Operating medium	Lubricated or oil-free compressed dry air, neutral gases (5 μm filter recommended)
Medium temperature	-10 °C...+50 °C
Ambient temperature	-10 °C...+55 °C
Electrical connection	Rectangular plug with 3 pins, raster 2.54 mm
Degree of protection	IP40 with rectangular cable plug

Circuit Function

Circuit function C (CF C) - 2 × 3/2-way solenoid valve Servo-controlled, with manual override, normally closed.

Dimensions

The following dimensional drawing applies to the standard 2 × 3/2-way variant (dimensions in mm).

Product Design and Assembly

The 2 × 3/2-way variant is assembled using two pilot controls and a shared pneumatic seat valve body.

Installation and Operation

Safety Instructions

• Risk of injury due to high pressure: Switch off the pressure before working on the device or system. Vent or empty the lines.
• Risk of injury from electric shock: Switch off the power supply before working on the device or system. Secure against reactivation.
• Uncontrolled movement: Back pressure in the exhaust air ducts can cause uncontrolled movements of the actuators. Use large-volume silencers.

Manual Override

To operate the valve manually, turn the manual override 90° in the direction of the arrow. This puts the valve into the switched state. The valve remains fixed in the switched state until the manual override is turned back to its original position.

For the double valve 2x3/2-way, the upper manual override switches output 2(A) while the lower manual override switches output 4(B).

Electrical Installation Note

Observe the type plate information on voltage, electrical power, and current type. At 100% duty cycle and maximum ambient temperature, the coil heats up to approx. +105 °C in single assembly and to approx. +120 °C in block assembly.