Hale Master Intake Valve - Manual (Page 5)

3
M
ASTER
I
NTAKE
V
ALVE
Figure 1. Component Part Identification (Electric Valve)
The Hale Master Intake Valve is a NFPA
compliant large diameter intake valve that
is mounted in the pump suction tube
behind the pump operator panel. The valve
is a butterfly type valve that is available
either in manual or electric operation.
Safety features on the valve include an
integral relief valve and air bleeder valve
tap that vent to the atmosphere. The valve
assembly, less relief valve, is factory tested
to 600 PSI (41 Bar).
The Hale Master Intake Valve has a 6.4 inch
(163 mm) diameter bore with a butterfly
disc designed to provide minimum flow
restriction when the valve is open. The
unique design of the valve and butterfly
permits the valve to provide full water flow
up to 1500 GPM (5678 LPM) from draft
through a single 6 inch NST suction hose
when mounted on Hale pumps directly to
the main suction inlet under all standard
operating conditions. Due to the design of
the valve, there is minimum friction loss and
pressure drop across the valve.
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 UL flows up to 2000
GPM (7570 LPM) from draft through dual 6
inch NST suction hoses. The disc design also
permits easy maintenance and lubrication
of the valve disc. The disc is coated with
nitrile rubber material that is compatible
with most chemicals in use on the fire
ground.
2
GENERAL DESCRIPTION
OPERATOR PANEL
PLACARD
TO +12 VDC
POWER SUPPLY
AIR BLEEDER
CONNECTION
GEARBOX
GEARBOX SHAFT
EXTENSION
(76 AND 81 INCH
PANELS)
RELIEF
VALVE
SUCTION
EXTENSION ON
MIDSHIP PUMP
MANUAL
OVERRIDE
PANEL
PLACARD
ELECTRIC
MOTOR
PROTECTIVE
COVER
OUTBOARD
PRIMING TAP
WATER DRAIN
CONNECTION
SUCTION
TUBE
MANUAL
OVERRIDE
HANDWHEEL
VALVE
DISC
VALVE
BODY