Fisher 3570 - Page 28

Instruction Manual
D200137X012
3570 Positioners
September 2015
28
Figure 11. Fisher 3570C Positioner
40A8972‐B
B1841
EXTENSION TYPE BIAS
SPRING ASSEMBLY
SECTION OF PART 29
PART 22
DIRECT ACTION
Key Description
34 Spring anchor, SST
35 Machine screw, pl steel (2 req'd)
36 Pipe plug, pl steel
37* Cover gasket,
Cork (std. const.)
Silicone (hi‐temp. const.)
38 Cover screw, pl steel (4 req'd)
39 Cover, aluminum
40 Washer, brass plated (2 req'd)
41 Relay blank, aluminum (see figure 13)
For 3572, 3573, 3576, 3577
42 Screw, SST (see figure 13)
For 3572, 3573, 3576, 3577 (3 req'd)
Key Description
43 Label, paper
For direct‐acting units
For reverse‐acting units
45 Cylinder tubing assembly, copper
For 3570, 3571, 3573, 3577
46 Bolt, brass
w/o restrictor assembly (2 req'd)
w/restrictor assembly (1 req'd)
47 Restrictor assembly, SST
*Recommended spare parts