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Design and principle of operation
922
850
902
916
917
901
900
911
595
904
906
61
40
927
921
919
Fig. 3-4: Type 3276-R Actuator (actuator stem extends)
Legend for Fig. 3-4 and Fig. 3-5
Housing with yoke
40
Actuator stem
61
Setting bolt
352
Washer
557
Spring
595
Handwheel
600
Handwheel pin
770
Stem protector
824
Handwheel cap
825
Top diaphragm case
850
Bottom diaphragm case
900
Diaphragm plate
901
Diaphragm holder
902
Bushing
903
Spring plate
904
3-6
B
A
Yoke flange
905
Spring adjuster
906
Stem connector
907
Actuator diaphragm
911
Screw (bottom diaphragm
915
case)
Bolt (diaphragm case)
916
Nut (diaphragm case)
917
Retaining ring (bushing)
918
Travel indicator nut
919
Travel indicator
921
Vent plug
922
O-ring (bottom diaphragm
923
case)
Internal O-ring (bushing)
924
External O-ring (bushing)
925
918
924
925
903
923
926
915
905
B
926
927
940
941
942
1027 Anti-rotation fixture
1029 Housing bolt (top-mounted
1030 Housing nut (top-mounted
A
Seal (bottom diaphragm
case)
Travel indicator
Handwheel housing
Drive (handwheel)
Drive nut
handwheel)
handwheel)
EB 8318 EN
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