INSTALLATION NOTES FOR
SERIES 37G
A. It is important that the Series 37G are installed level within
the pipe. An equal amount of space must exist above and
below the end of the bill. The Series 37G may "gap open" it
installed improperly.
B. The bill of the Series 37G must have room to expand
outwards, while bottom of the bill area rises. The area around
the bill must be kept free of debris to allow the bill to close in
order for the valve to seal properly.
C. The Series 37G effectively reduces the inside diameter of
the pipe in which it is installed, creating a restriction. It may
also create a "ledge" inside the pipe, causing standing water.
D. Back pressure in excess of the maximum line pressure
may invert the sleeve and cause valve failure.
E. Should the conditions that the Series 37G was designed for
change, (line pressure, back pressure, chemical compatibility)
the performance of the valve may suffer.
Nominal Pipe I.D./Valve Size* Maximum Bill Height Maximum Length Maximum Back
(A) (B) (C) Pressure (psi)
6" 5-7⁄8" 11" 75
8" 7-3⁄4" 12-1/4" 75
10" 9-3⁄4" 15-1/4" 65
12" 11-3⁄4" 18-1/4" 65
14" 13-1/2" 21-1/4" 50
16" 15-1/2" 22-3/4" 50
18" 17-1/2" 23-3/4" 25
20" 19-1/2" 31-3/4" 25
24" 22" 37" 25
30" 27" 40-1/2" 15
36" 34" 46-3/4" 15
42" 40" 49" 10
48" 45" 51-1/2" 10
60" 57" 63-7/8" 10
72" 69" 72-1/2" 10
*For pipe I.D.'s other than the nominal pipe I.D.'s shown, consult factory to verify 37G dimensions.
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