Doc. #: A-718C, Rev. 1
Page 24 of 36
7.0 Cleaning
NOTE: In preparation for reassembly, all metallic parts should be cleaned
. Do not use
solvents or grease lubricants that are incompatible with the products in the tank. For example, a
petroleum-based grease may cause a chemical reaction when it comes in contact with chlorine.
Contact your supervising engineer for suitable cleaning and lubricating material
recommendations. O-rings and metallic parts that fit together should be lightly greased.
7.1.1 Use a wire brush or pad to clean out the threads of the bonnet and the recess for the packing in the top of
the body. Also, clean the grooves and the bore where the seat inserts fit into the body. Clean the side port
where the outlet O-rings and the outlet flange gasket seal.
7.1.2 With a buffing wheel, clean out the threads of the stem and remove all traces of chlorine deposits on the
unthreaded part of the stem.
Figure 7-3 Clean Stem Threads and Smooth Areas
7.1.3 On the outlet flange, remove all traces of chlorine by buffing the flat flange and the O-ring seal areas. Clean
all solidified product, Teflon
®
tape, etc. from the threads.
7.1.4 Clean the underside of the packing screw. It may also be necessary to buff the exterior male threads, as
well; but take care to not remove part of the Teflon
®
insert that is used to lock the thread.
Figure 7-1 Clean Threads
Figure 7-2 Clean Side Port
Figure 7-4 Clean Outlet
Flange and Threads
Figure 7-5 Clean
Packing Screw
