Dimensional Drawing; Flow Curves - Xylem Rule LoPro LP900S Instruction Manual

Fully automatic bilge pump

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Table of Contents

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Plumbing:

This bilge pump has been designed to be used with flexible hose. Rigid piping or tubing may damage the pump or the

pump's discharge.

Factors that reduce the flow of a bilge pump may include but are not limited to the following:

• The length of discharge piping (longer runs reduce flow)

• The number or radius of bends

• The roughness of the interior surfaces of piping and fittings (smooth bore hose is best)

• The reduction (hose restriction) in cross-sectional area of discharge system components such as check valves and

thru-hulls

Attach the discharge hose to the hose barb using stainless steel hose clamps.

The thru-hull discharge fitting should be mounted at least 8" (20.3 cm) above the heeled water line to prevent water

siphoning in from outside the vessel or the discharge may be located below the maximum heeled waterline if the

discharge line is provided with both of the following:

• A seacock installed in accordance with the requirements of ABYC H-27, Seacocks, Thru-Hull Connections, and Drain

Plugs, and

• A vented loop or other means to prevent siphoning into the boat. A check valve shall not be used for this purpose.

If the discharges of several pumps are manifolded to discharge through a single thru-hull fitting, the system shall be

designed so that the operation of one pump will not back feed another pump, and the simultaneous operation of each

pump will not diminish the pumping capacity of the system. A check valve shall not be used in the discharge manifold

system.

A check valve may be used only when necessary to prevent an automatic bilge pump from cycling on and off due to back

flow from the discharge line.

Hose connections shall be secured with a non-corrosive type of clamp, or be mechanically fastened with permanently-

attached end fittings, such as swaged sleeve. Threaded inserts shall be attached with corrosion resistant metallic clamps.

Best practice: Use two stainless steel

hose clamps to attach hose to

hose barb.

During the winterization of a vessel, it's recommended that you remove the check valve (if equipped) and drain any residual

water from the plumbing.

Please note that the check valve should NOT be used

with the elbow fitting. The check valve and elbow

combination greatly restrict the flow.