2 L1 71 en
13
An extra long screw is needed for opening angles
<80°.
6.4.8
Spring-return cylinder actuator B1JA
Spring-to-open
The actuator being unpressurized the valve is open.
Unscrew the close limit stop screw (actuator hous-
ing). Apply tabulated shut-off pressure Pc to the air
connection at the cylinder bottom end against the
spring force to close the valve.
Check through the stop screw hole that the piston
rod does not touch the cylinder top end. If it does,
loosen the bracket screws and turn the actuator
clockwise to increase the adjusting margin.
Turn the closed position stop screw until it touches
the piston, then turn back 1/4 turn and lock up. Leak-
proof with Loctite 225 or other non-hardening seal-
ant. The sealant must not flow inside the cylinder.
An extra long screw is needed for opening angles
< 80°.
7
TOOLS
No special tools are needed for servicing the valve.
However, we recommend an extractor for removing the
actuator from the valve. The tool can be ordered from the
manufacturer.
Extractor tools (Actuator Series B1C/B1J)
8
ORDERING SPARE PARTS
When ordering spare parts, always include the following
information:
type code, sales order number, serial number
(stamped on a valve body)
number of the parts list, part number, name of the
part and quantity required
This information can be found from the identification plate
or documents.
Fig. 25.
Cylinder actuator, Series B1J
Fig. 26.
Cylinder actuator, Series B1JA
Stop screw for the
closed position
Stop screw for the
open position
Stop screw for the
closed position
Stop screw for the
open position
Product: ID:
B1C/B1J 6
303821
B1C 8-11 / B1J 8-10
8546-1
B1C 12-17 / B1J 12-16
8546-2
B1C/B1J 20
8546-3
B1C/B1J 25
8546-4
B1C/B1J 32
8546-5
B1C 40 / B1J 322
8546-6
B1C 50
8546-7
B1C 502
8546-8
