Section 2: Introduction; Identification - Emerson Bettis Q Series Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3

Section 2: Introduction

This section explains:
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2.1

Identification

The Bettis Q-Series Rack and Pinion actuators are available as double-acting or spring-
return versions. 9 models are available, ranging from 40 Nm to 1600 Nm (354 to 14161 lbf.
in) nominal torque output.
The Bettis Q-Series package consists of an actuator with a module for control and position
feed back and forms an integrated concept for "On/Off" valve automation.
1.
The basic actuator supplies the torque, required to open and close valves and is
available in various sizes (rated 47 to 1676Nm at 5.5barg or 413 to 14874 In.lb. at 80pisg).
Double acting and spring return executions are available. The spring return execution can be
equipped with multiple spring sets to cover a pressure range from 2 to 8 barg (30 to 120 psig).
The springs in the spring-return version allow a fail action in case of loss of air supply
pressure (Fail-to-Close or Fail-to-Open). As from size FD150 double-acting versions have
flat end caps to reduce actuator length and internal air volume.
The springs in the spring-return version allow a fail action in case of loss of air supply
pressure (Fail-to-Close or Fail-to-Open).
As from size 150 double-acting versions have flat end caps to reduce actuator length and
internal air volume.
2.
The Control Modules contain, next to the components for feedback switches, also all the
pneumatic control components.
Its compact and robust construction incorporates basic control and feedback functionality
and is suitable for indoor and outdoor use.
Introduction
How to identify the received product.
The intended use of the product.
Construction details.
Actuator specifications.
Basic Actuators
Control Modules
Section 2: Introduction
April 2019
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