14
2. Use appropriate hose or pipe on 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 po-
tential force of water that can flow from the relief valve.
2.2.4 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 or push on hose fitting 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.
2.2.5 Air Bleeder Valve
THE HALE MIV IS SHIPPED WITH A PLASTIC PLUG IN THE OUTBOARD CONNECTION
PORT. DURING INSTALLATION OF THE HALE MIV THE PLUG MUST BE REMOVED AND
AN AIR BLEEDER CONTROL VALVE, CONTROLLABLE AT THE PUMP OPERATOR POSI-
TION, MUST BE INSTALLED.
IF HALE AIR BLEEDER VALVE (ABV) ASSEMBLY IS NOT INSTALLED, A WARNING PLAC-
ARD MUST BE MOUNTED ON THE OPERATOR PANEL NEXT TO THE AIR BLEEDER CON-
TROL STATING: “WARNING: ALL AIR MUST BE BLED FROM INTAKE HOSE PRIOR TO
OPENING MIV VALVE.”
1.
Remove the plastic shipping plug from the ¼ 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 Hale Air Bleeder Valve (ABV) is used, refer to figure 6 and do the
following:
2.
Install one of the ¼ inch NPT X 3/8 inch tube push on fittings into the ¼ inch NPT
threaded hole in the valve body.
3.
Install the remaining ¼ inch NPT X 3/8 inch tube push on fitting into inlet of the air bleeder
valve body. Hold the valve with a wrench.
TO PREVENT DAMAGE TO THE AIR BLEED VALVE BODY, HOLD THE HEX OUTLET ON THE
VALVE WITH A WRENCH WHILE TIGHTENING ELBOW.
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