Midland A-520 Series User Manual

Page 17 of 28
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Remove the stop plate (item 8) and then
carefully press the valve stem (item 2) into
the body (item 4) cavity and remove it.
TIP: The use of a brass or plastic hammer
may be required to overcome the
resistance of the compressed stem
packing.
F
igure 4-8 Remove Stop Plate and Stem
Remove the stainless-steel spacer collar (Item 6) from the valve-stem bore.
F
igure 4-9 Remove Space Collar
Remove the Teflon® packing (item 5) from the valve-
stem bore. Avoid
scratching or gouging the interior surfaces for the valve-stem bore.
F
igure 4-10 Remove Teflon Packing
Carefully remove the body ball seal (item 10) from the inside-bottom of the
valve body (item 4).
F
igure 4-11 Remove Ball Seal
8
2
2
4
6
5
10
4
A-520/A-522/A-522A, Rev. 3.0

Midland A-520 Series Specifications

General

Brand	Midland
Model	A-520 Series
Category	Control Unit
Language	English