Instruction Manual Form 5421 June 1999
Design 3024S
Design 3024S Diaphragm Actuator Content Introduction .................................... 1 Scope of Manual ...................................... 1 Description ............................................... 1
Specifications ................................. 2 Installation ....................................... 3 Actuator Mounting .................................... 3 Travel Adjustments ................................... 5
Maintenance ................................... 5 Disassembly ............................................ 5 Assembly ................................................. 6 Changing Actuator Action ......................... 8 Side Mounted Handwheel ......................... 8 Adjustable Travel Stops ............................ 10
Parts Ordering ................................ 10
W6681b
Figure 1. Type 3024S Actuator with Design 1018S Valve
Parts List ................................................. 14
Scope of Manual This instruction manual provides information on installation, adjustment, maintenance and parts ordering for the Type GA 1.21, GA 1.31 and GA 1.41 actuators.
Description The direct acting (extends stem) actuator (figure 6 and 9)
Only personnel qualified through training or experience should install, operate and maintain Type 3024S actuators. D102625X012
Introduction
and the reverse acting (retracts stem) actuators (figure 7 and 10) are spring-opposed pneumatic diaphragm actuators that provide throttling or on-off operation of slidingstem control valves. The Type 3024S ATC actuator springs are located under the diaphragm plate, and they fully retract the actuator stem for fail action upon loss of diaphragm casing pressure. The Type 3024S ATO actuator springs are located on top of the diaphragm plate, and they fully extend the actuator stem upon loss of diaphragm casing pressure.