9
Piping
1. For improved pool plumbing, it is recommended to use a larger pipe size.
2. Piping on the suction side of the pump should be the same or larger than the return line diameter.
3. Plumbing on the suction side of the pump should be as short as possible.
4. For most installations, always INSTALL a valve on both the pump suction and return lines so that the pump can be
isolated during routine maintenance. However, we also recommend that a valve, elbow or tee installed in the
suction line should be no closer to the front of the pump than five (5) times the suction line diameter. See
Figure 2.
Example:
A 2.5 inch pipe requires a 12.5 inch (31.8 cm) straight run in front of the suction inlet of the pump. This
will help the pump prime faster and last longer.
NOTICE:
DO NOT install 90° elbows directly into the pump inlet or outlet.
Fittings and Valves
1. Do not install 90° elbows directly into pump inlet.
2. Flooded suction systems should have gate valves installed on suction and discharge pipes
for maintenance, however, the suction gate valve should be no closer than five times the suction pipe diameter as
described in this section.
3. Use a check valve in the discharge line when using this pump for any application where there is significant height
to the plumbing after the pump.
4. Be sure to install check valves when plumbing in parallel with another pump. This helps prevent reverse rotation of
the impeller and motor.
