Hale SPV - Manual (Page 12)

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
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
determine the relative location of parts as
the Hale SPV is being disassembled.
1. Disconnect the vacuum hose from the
hose 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.