Introduction
4
April 2019
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3
Section 2: Introduction
Figure 1
Identification
1
2
3
4
Size
End cap design
5
Spring design
6
Pinion bottom /
Insert design
2
Notes:
1. Top auxilliaries according (VDI/VDE 3845; NAMUR). Bettis Q-Series comes with a proprietary pneumatic
interface for direct mounting of the Control modules.
2. Valve interface available according ISO5211 or DIN 3337. Actuator sizes 40 to 1600 can be fitted with drive
inserts with various inner shapes.
3. Spring-Return actuators: - with springs
4. Double-Acting actuators: - no springs
5. Actuator sizes 40 to 100 have high end caps for double-acting and spring-return models. Actuator sizes
150 to 1600 have low end caps for double-acting models and high end caps for spring-return models.
6. Actuator sizes 40 to 600 are fitted with a maximum of 12 spring cartridges. Actuator sizes 950 and 1600
are fitted with a maximum of 6 loose springs.
40 -
100
Maximum 12
spring cartridges
Left
Right
SR
DA
150 -
600
SR
Left
Right
DA
Maximum 12
spring cartridges
950 -
1600
Left
Right
SR
DA
Maximum 6
loose springs
