Hale Master Intake Valve - Manual (Page 12)

10
M
ASTER
I
NTAKE
V
ALVE
b. The relief valve mounting pad on the
Hale MIV valve body has 2-½ inch NPT
female threads, install a 2-½ inch NPT
threaded pipe nipple into the mounting
pad.
c. Screw a 2-½ inch NPT Hale type 115
4-
3 /
8
inch bolt circle flange (Hale P/N
115-0070-00-0) onto the pipe nipple.
d. Making sure the relief valve
discharge is pointing down and away
from the operator position, attach the
relief valve adapter and relief valve to
the Hale 115 flange using a gasket, four
7 /
16
-14 UNC X 2-½ inch long grade 5 zinc
plated steel hex head cap screws and
four
7 /
16
-14 UNC zinc plated steel nuts.
Torque the cap screws and nuts to 40 lb-
ft (54 N-m).
2. Attach a pipe or hose to the 2-½ inch
NPT outlet of the relief valve to direct the
discharge of the relief valve away from
the operator position. DO NOT restrict
the flow of water through this pipe.
Make sure the pipe is properly supported
to withstand the potential force of water
that can flow from the relief valve.
3. Two aluminum relief valve warning
placards, one wired to the relief valve
adjustment screw and the other with the
installation kit, are provided with the
Hale MIV. One of the placards must be
permanently affixed near the relief valve
adjustment screw and the other must be
mounted on the access panel for the
relief valve.
D. SUCTION HOSE WATER DRAIN
NOTE: On bottom mount valves the
drain connection on the valve is not
used. Remove the plastic shipping plug
and install a ¼ inch NPT pipe plug.
NOTE: Coat all pipe threads with a
suitable sealant before connections are
made.
1. Remove the plastic plug from the ¼ inch
NPT water drain connection on the
bottom of the valve body
2. Install a ¼ inch NPT x 3/8 inch tube
compression fitting or elbow into drain
hole.
3. Using 3/8 inch OD tubing rated at
maximum pressure of fire pump (500 PSI
(34 BAR) minimum) connect to an
individual drain valve located on the
pump operator panel.
E. AIR BLEEDER VALVE
WARNING: The Hale MIV is shipped with
a plastic plug in the ¾ inch NPT air
bleeder connection port. During
installation of the Hale MIV the plug must
be removed and an air bleeder control
valve, controllable at the pump
operator position, must be installed.
WARNING: If the optional Hale Air
Bleeder Valve (ABV) assembly IS NOT
installed, a warning placard must be
mounted on the operator panel next to
the air bleeder control stating:
“WARNING: ALL AIR MUST BE BLED FROM
INTAKE HOSE PRIOR TO OPENING MIV
VALVE.”
1. Remove the plastic shipping plug from
the ¾ inch NPT air bleed connection
that is located on the top of the valve
body and install an air bleeder control
valve that is controllable by the pump
operator. The discharge of the air
bleeder must be directed away from the
pump operator position. If the optional
Hale Air Bleeder Valve (ABV) is used,
refer to figure 6 and do the following:
2. Install ¾ inch NPT X ¼ inch NPT bushing
into the ¾ inch NPT tapped hole on the
valve body.
3. Install one of the ¼ inch NPT X 3 /
8
inch
tube compression fittings into the ¼ inch