Hale MG - Manual (Page 31)

Muscle Pumps
1-24
Valves
Suction Valves
Hale has available valves that mount in the suction
of the midship pump.
The Hale Master Intake Valve (MIV) becomes an
integral part of the fire pump. When the valve is
ordered as part of a Hale Midship fire pump, the
pump will pass UL requirements up to 1500 GPM
(5678 LPM) from draft through a single 6 inch
NST suction hose with the valve in place. When
two valves are mounted to the fire pump the pump
can achieve NFPA Performance Point flows of
2000 GPM (7580 LPM) from draft with dual 6
inch NST suction hoses. NFPA Performance Point
flows of 2250 GPM (8516 LPM) is achieved with
two MIVs and three 6 inch NST suction hoses. The
Hale MIV meets NFPA requirements for
operations using a large diameter supply hose. See
figure 1-22 for Master Intake Valve. Further
information on the MIV can be found in manual
P/N 029-0020-35-0.
At least one full flow suction valve with locking
handle is normally mounted on the pump. The
body of each suction valve connects into the pump
suction with a maximum of one long sweep 90°
elbow between the valve and the pump suction.
Discharge Valves
Discharge valves regulate the amount of water
leaving a pump. Each valve includes a locking device
that permits operation in any position from fully
opened to fully closed. The 2-1/2-inch discharge
valves are quarter-turn ball-type with a locking
handle. As the valve handle is moved the ball can
rotate from being in-line with the waterway to a
position 90° to the waterway, or any position in
between, thus reducing or stopping the flow of water.
In-line valves are also quarter-turn ball-type valves.
HANDWHEEL
SUCTION TUBE
MANUAL OVERRIDE
HANDWHEEL
DRAIN CONNECTION
NITRILE RUBBER COATED DISK
SEAL GEAR ACTUATORS
12 VOLT DC MOTOR
PANEL PLACARD
AND INDICATORS
SUCTION EXTENSION
3/4 NPT (FEMALE)
BLEED CONNECTION
ELECTRICALLY
OPERATED
HALE TYPE "115" SERIES
FLANGE WITH 2 1/2
NPT(FEMALE) THREAD FOR
REMOTE MOUNTING
MIV VALVE
MANUALLY OPERATED
Figure 1-22. MIV Valve
3/4 NPT (FEMALE)
PRIMING CONNECTION
PANEL PLACARD
AND INDICATORS