Pulsar® Infinity Operation and Installation Manual – Water Treatment 28
9 Appendix
Appendix A – Technical Bulletin: Pitot Tubes for 2 ½” and 3” Pool piping
Pitot Tubes for 2 ½” and 3” Pool piping - Part Numbers
Part Description Qty Part Number
Pitot Tube – 1 7/8” ¾” (19 mm) sch 40 pipe, for 2 ½” Pool Piping, 45° angle cut, 1 7/8”
length from bottom of threads, (2 pack)
1 73141
Pitot Tube – 2 5/8” ¾” (19 mm) NPT, for 3” Pool Piping, 45° angle cut, 2 5/8” length from
bottom of threads, (2 pack)
1 73142
Background: As part of the design of the Pulsar® Infinity Feeder, pitot tubes help provide up to 2 times the flow rate increase with the same pres-
sure differential. The increase in flow rate is needed to provide enough flow through the feeder to reach the maximum feed rate output established
by the feed rate table, section 4.2.2, of the installation and operator’s manual.
The pitot tubes listed in the parts of the manual are designed for 1 ½” to 2” piping as that will accommodate the majority of pools in this market.
For the remaining pools that have between 2 ½” and 3” piping, design modifications to the pitot tubes were required to provide the same level of
performance.
The pitot tubes for 2 ½” to 3” pool piping are shown in the pictures below. They have the same 45° angle cut similar to the smaller pitot tubes
that come with the feeder system, but instead come with a threaded fastener that threads right into the pool pipe. No saddle clamps are needed
making for a simple installation. Once the pitot tubes are installed, the isolation ball valves (part number 74061 from section 7.2 of the operator’s
manual) are used to complete the inlet and outlet connections of the feeder following section 3.4 in the manual.
Pitot Tube – 1 7/8”
For 2 ½” pool piping
Pitot Tube – 2 5/8”
For 3” pool piping
½” MNPT for ball
valve
Notch aligned with
45° angle cut
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