4
B. SIZING & SPECIFICATION REFERENCE
• Suction fitting configuration specific flow ratings MUST NOT be exceeded at any time the pool is open to bathers.
• A system must install a suction fitting, or combination of multiple suctions, such that the resulting individual suction
system flow rating is greater than the pumping system’s maximum system flow rate.
• To reduce the risk of drowning from hair and body entrapment, install suction fittings with a marked flow rate in gallons
per minute that exceeds the flow rate of your system by at least 25%. Increasing size of the pump may increase flow rate
of suction beyond rated safety limits causing entrapment or death.
• Any modification that increases the flow rate of the circulation system shall require reevaluation of the cover/grate and
sump to ensure that the flow rating of the Suction Outlet Fitting Assembly is not exceeded.
• The flow rating for pools with multiple, blockable SOFAs piped together in one body of water without isolation valves shall
be determined by combining the flow rating of all SOFAs, minus the flow rating of one. If the flow ratings of all SOFAs are
not equal, subtract the flow rating of the SOFA with the highest flow rating.
• NOTICE: No modification shall be made to a SOFA structure or flow path unless the new configuration has been certified
as a new SOFA.
TABLE 1: SPECIFICATIONS
WALL FLOW RATE
50 GPM - Flow rate verified to CPSC test protocol
PIPE SIZE
2” Insider (25207-7xx - Gunite Only)
1.5” MIP (25207-8xx - Fiberglass, Vinyl or Gunite)
OPEN AREA
6.82in
2
SUCTION COVER LIFE
7 Years. Replace cover and screws every seven years.
WALL FITTING BODY LIFE
30 Years
TO
TAL HE
AD
L
OSS (Feet o
f Head)
FLOW RATE (GPM)
1
0
10
20
30
40
50
60
70
2
0
3
4
5
6
7
1.5IN PIPE
2IN PIPE
2.7
3.05
4.36
3.32
3.78
3.43
3.89
6.54
4.36
5.46
CHART 1: HEAD LOSS CHARTS
