Pneumatically actuated
For controlling up to 20 filter pulse valves
Internal thread P = G 1/8 Z = G 1/4 Publication 7500979.06.09.96
Operating pressure 2 to 8 bar Catalogue index
A 20

The device controls a maximum of 20 filter pulse valves and replaces the solenoid control unit. The pulse valves are connected to the pressure chamber of the controller by small bore airlines. The wiper arm assembly of the controller is operated by a pneumatic ratchet drive. It pauses between valve connections for a preset time which is adjustable by the user. The switching time is also user adjustable by means of a throttle valve accessed after removal of the bottom casing. During the switching time the wiper arm passes beneath a valve connection port and vents the pilot line to that particular valve. The valve opens and remains open until the wiper arm moves on to the next position. The pilot air is vented through the port marked „R“ underneath the manual override knob, which is marked to show the exact position of the wiper
arm.

The control section consists of a pneumatic timer for adjusting the interval, throttle valve for adjusting the switching time and pneumatic ratchet drive for the wiper arm assembly. The operating section consists of pressure chamber, control ports and wiper arm. Fluid (control section): filtered air – compressed air supply via conditioning unit with a 5 to 10 µm filter, without oiler (for unpurified compressed air we recommend an additional 50 to 75 µm primary filter. Temperature range: 0 to +70°C, -25 to 70°C for dry air Interval: adjustable 2 to 200 s, set on about 10 s in factory
Reproducibility: ± 5% Mounting position: optional

Material: body: grey cast iron

Features
Compact design
Switching time and interval adjustable
Fully pneumatic controller, suitable for robust operation

Characteristic data
Control section
Pressure port P: G 1/8
Operating pressure min: 2 bar
max: 8 bar
Operating section
Control port Z: G 1/4
Control pressure min: 0.5 bar
max: 8 bar
Number of control ports 1 2