Thread: RB SQ Nozzles
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Old 08-17-2010, 01:43 PM
irrig8r irrig8r is offline
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Join Date: Dec 2004
Location: Silicon Valley, CA
Posts: 4,539
The originals were called XPCNs (for Xeri Pressure Compensating Nozzles) and the flow was stated in gph... for instance:

In the "first" position @ 40 psi the H at 3.0 ft radius used 13.7 GPH and a precip. rate of 1.22 in/hr.

Yet at the "second" position @ 40 psi the H at 4.0 ft radius used the same GPH, but a precip. rate of .54 in/hr.

Both of these as laid out with no overlap.

I didn't really look at the post card yet to see whether these are the same thing or something different.
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