55
2 - Media Cooled with External Flush
- This construction requires an external flow of water, typically re-use
water. Applications which require this option are typically heavy slurry or sludge service often found in the
treatment plant. This option routes the externally supplied water into the pumped media. No pump modifications
are required.
Required Hardware – Mounting a regulating valve, pressure gauge and automated block valve between the
water supply and the upper jacket port is required. The supply valve should be adjusted to allow the supply of
water to exceed pump discharge pressure. This assures a positive flow of water into the pump chamber. The
block valve should be automated to open whenever the pump is operated.
Start Up Requirements – This jacket must be vented at start up. Additional venting may be required if cooling
water supply is interrupted.
3 - External Fluid Cooled
- This option requires an external flow of water like in option 2 above, but is used
where dilution of the pumped product is not desirable. The supply of water is internally isolated from the pumped
media. The water inlet is routed into the jacket’s lowest port and returned out of the highest port. This option does
NOT allow water to enter the pumped media and pump must be ordered from factory this way.
Required Hardware – Mounting a regulating valve, pressure gauge and automated block valve between the
water supply and the upper jacket port is required. The supply valve should be adjusted to allow for a good
supply of water to flow through the jacket. The block valve should be automated to open whenever the pump
is operated.
Start Up Requirements – This jacket must be vented at start up. Additional venting should not be required.
Vent Valve Installation
HOMA dry pit pumps are supplied with a valve and fitting that must be installed and maintained to ensure the
proper performance of these pumps.
The opening for this valve is located on the base of the motor cap near the mounting screws. The pump is
shipped with a plug installed which must be removed prior to start up.
This opening is a metric straight thread and requires an adapter included with the valve and fitting hardware. It is
also recommended that a length of hose be attached to the valve and routed back to the sump.
Note: Leave vent valve open in wet pit pump application to
prevent air entrapment in jacket.
