S
emi-Automatic
P
riming
V
alve
11
replace these components when the valve is
disassembled. If the brass seat on the valve
body is damaged the Hale SPV must be
replaced.
12. During re-assembly of the valve use thread
locking compound (Loctite #290 or equal) to
lock threads in place.
13. Apply a light coating of thread sealing
compound and install the service elbow and
vacuum hose connection fitting into the
valve body.
14. Insert the new valve into the valve body from
the side that attaches to the pump or
universal adapter.
15. Place the small end of the compression
spring over the boss in the valve body
around the valve.
WARNING:
Parts under spring tension can
become projectiles and cause serious injury.
When removing or installing these parts
make sure they are restrained and spring
tension is released slowly.
16. With the Hale SPV on a stable surface,
place the diaphragm plate over the spring
and press down to compress spring. While
holding diaphragm plate down with spring
compressed, install #10-24 x
1
/
2
inch long
screw into the valve.
17. Place a new diaphragm on the valve body
and align screw holes.
18. Place the diaphragm cover over diaphragm
aligning matchmarks ensuring the cover
drain hole will be in the correct position
when the valve is installed on the pump.
19. Install the 5/16-18 x
3
/
4
inch long cap screws
to hold the cover in place.
20. Apply a light coating of grease to the seal
ring then place strainer and new seal ring
into valve body. Install seal ring, strainer
and valve assembly on pump (or universal
adapter) over studs. Secure in place using
7
/
16
-14 nuts. Tighten nuts.
21. Connect the
3
/
4
inch (19 mm) ID vacuum
hose from the priming pump to the hose
connection fitting on the Hale SPV
assembly.
22. Test operation of the Hale SPV. Conduct
vacuum and hydrostatic tests in accordance
with department procedures.