S
emi-Automatic
P
riming
V
alve
7
Make sure the vacuum hose connection is
facing in the down direction when the Hale
SPV is installed.
12. Apply a light coating of thread locking
compound (Loctite #290 or equal) to the
exposed stud threads. Secure Hale SPV in
place using
7
/
16
-14 nuts.
WARNING:
Use only pipe, hose, and
fittings from the priming pump vacuum
connection to the Hale SPV vacuum
connection rated for 29 in (737 mm) Hg
vacuum.
13. Attach
3
/
4
inch (19 mm) ID vacuum hose
from the hose connection on the Hale SPV
to the priming pump connection. Use hose
with
3
/
4
inch (19 mm) inside diameter that is
rated for 29 in (737 mm) Hg vacuum
(Aeroquip 2556-12 or equal). Make sure the
hose is routed and properly secured in place
to prevent chaffing and abraision.
14. Test operation of the Hale SPV and priming
pump. Conduct vacuum and hydrostatic
tests in accordance with department
procedures, NFPA1901 or NFPA 1911.
Figure 5. Hale SPV Valve Installation on Midship Fire Pump
MIDSHIP PUMP
BODY (REF.)
HALE SPV
ASSEMBLY
7
/
16
-14 NUT (2)
7
/
16
-14 x 1-
3
/
4
INCH
LONG STUD (2)
PRIMING
STRAINER
SEAL
RING
DIAPHRAGM
COVER
DRAIN
PRIMING HOSE CONNECTION
USE ¾ INCH (19 mm) INSIDE DIAMETER
HOSE