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Thermoplastic Valves Product Guide & Engineering Specifictions
Backwater Valves
Made in the U.S.A. Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Page 820
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Size A B C E F G H I
2 1-13/16 1-3/4 2-5/8 5/16 3-1/4 5-9/32 4-3/16 4-9/16
3 2-5/8 2 4-3/16 13/32 4-1/8 7-3/4 6 6-1/8
4 3-5/8 3-3/4 5-7/16 23/32 5-7/16 10-15/16 8-1/4 7-15/16
6 4-3/4 4-5/8 7-3/4 13/16 7-3/16 15-3/8 11-1/4 10-13/16
Valve with Extension
Kit Dimensions (Inches)
Standard Valve Dimensions
E
F
I
G
C
A
B
H
D
RISER
PIPE
FLOW
STANDARD VALVE
VALVE WITH EXTENSION KIT
Size
1
Premade
Extension
Size
1
Premade
Extension
Pressure
Rating
2 x 12HT SAEK-020-120 4 x 12HT SAEK-040-120
43 psi
(100 feet of
head)
2 x 16HT SAEK-020-160 4 x 16HT SAEK-040-160
2 x 20HT SAEK-020-200 4 x 20HT SAEK-040-200
2 x 24HT SAEK-020-240 4 x 24HT SAEK-040-240
2 x 36HT SAEK-020-360 4 x 36HT SAEK-040-360
2 x 48HT SAEK-020-480 4 x 48HT SAEK-040-480
3 x 12HT SAEK-030-120 6 x 12HT SAEK-060-120
3 x 16HT SAEK-030-160 6 x 16HT SAEK-060-160
3 x 20HT SAEK-030-200 6 x 20HT SAEK-060-200
3 x 24HT SAEK-030-240 6 x 24HT SAEK-060-240
3 x 36HT SAEK-030-360 6 x 36HT SAEK-060-360
3 x 48HT SAEK-030-480 6 x 48HT SAEK-060-480
1 - Size designates nominal valve size x extension height (HT-top of valve
to top of extension, inches). All extension kits can be cut shorter in the
field for custom fits.
Valve x
Extension
Size
1
Socket
Valve With
Extension
Valve x
Extension
Size
1
Socket
Valve With
Extension
Pressure
Rating
2 x 12HT S275P-120 4 x 12HT S475P-120
43 psi
(100 feet of
head)
2 x 16HT S273P-160 4 x 16HT S473P-160
2 x 20HT S275P-200 4 x 20HT S475P-200
2 x 24HT S275P-240 4 x 24HT S475P-240
2 x 36HT S275P-360 4 x 36HT S475P-360
2 x 48HT S275P-480 4 x 48HT S475P-480
3 x 12HT S375P-120 6 x 12HT S675P-120
3 x 16HT S373P-160 6 x 16HT S673P-160
3 x 20HT S375P-200 6 x 20HT S675P-200
3 x 24HT S375P-240 6 x 24HT S675P-240
3 x 36HT S375P-360 6 x 36HT S675P-360
3 x 48HT S375P-480 6 x 48HT S675P-480
1 - Size designates nominal valve size x extension height (HT-top of valve to
top of extension, inches).
Quick View Backwater Valves with
Extension Kit to Premade Lengths
Socket Valve with complete Extension Assembly in precut lengths.
Quick View Service Access Extension
Kit Only In Premade Lengths
(valve not included)
Extension Assembly in precut lengths. Use existing valve top Access Plug.
FLOW
HEIGHT-D
12
16
20
24
36
48
D = Top of plug Standard Valve to
top of plug with Extension