S
emi-Automatic
P
riming
V
alve
10
Hale SPV Test Procedures:
Performance of the Hale SPV shall be tested
monthly. The following procedures shall be
used to test the Hale SPV. If proper
performance as indicated below cannot be
achieved then the valve must be repaired.
1. Close all valves and drains on the pump.
Cap all suction openings and outlet of
suction side relief valve (if so equipped).
2. Connect a test vacuum gauge to the intake
test gauge connection on the pump panel.
3. Depress and hold the prime push-button to
energize the priming pump motor. Observe
the diaphragm on the Hale SPV while the
priming pump is running. The diaphragm
should draw in when sufficient vacuum is
generated in the vacuum hose.
4. Continue operation of the priming pump
while observing the vacuum test gauge.
When the vacuum gauge stops dropping at
approximately 22 in (559 mm) Hg. release
the push-button. Observe the vacuum
gauge. If the vacuum falls more than 10
inches (254 mm) in 5 minutes it is certain
there is a leak in the system. Check for
leakage of the system.
5. Hydrostatic test the Hale SPV to 250 PSIG
(17 BAR) in accordance with departmental
procedures.
Repair Procedures:
The following procedures are provided for repair
of the Hale SPV. Refer to the exploded view in
section 5 of this manual to determine the
relative location of parts as the Hale SPV is
being disassembled.
1. Disconnect the vacuum hose from the hose
The Hale SPV is designed to provide trouble free service with a minimum of preventive
maintenance. Performance degradation can result from a ruptured diaphragm or worn seat on the
valve. A Hale SPV repair kit that contains a manual, seal ring, valve and diaphragm is available
from Hale Products, Inc. The repair kit part number is 546-1680-00-0
MAINTENANCE
connection on the valve body.
2. Remove the
7
/
16
-14 nuts that hold the valve
assembly to the pump body or universal
adapter.
3. Remove the valve assembly, strainer and
seal ring from the pump.
4. Matchmark the diaphragm cover and valve
body to permit proper alignment of the drain
hole during re-assembly of the valve.
5. Remove the
5
/
16
-18 x
3
/
4
inch long cap
screws that hold the diaphragm cover and
diaphragm to the valve body.
6. Carefully pry the cover and diaphragm from
the valve body being careful to not damage
the diaphragm. Separate the cover and
diaphragm.
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.
7. Support the valve on a stable work surface
to prevent accidental release of spring
tension. While pressing in on the
diaphragm plate unscrew the #10-24 x
1
/
2
inch long screw. Once the screw is
removed slowly release the spring tension
and remove the diaphragm plate.
8. Remove valve spring from valve body.
9. Remove the valve from the valve body.
10. Remove vacuum hose connection fitting and
service elbow from the valve body.
11. Carefully inspect all components of the valve
for damage and wear. The Hale SPV repair
kit (Hale P/N 546-1680-00-0) contains a new
diaphragm, valve and seal ring. Always