Product Overview

Made in the U.S.A. 1128
NOT FOR DISTRIBUTION OF COMPRESSED AIR OR GAS
Progressive Products from Spears
®
Innovation and Technology
Utility Swing & Spring Check Valves
General Installation Information: Utility Swing check valves are designed for horizontal installations,
but may be installed in up-flow only vertical position. Check valves MUST be installed with the valves
FLOW arrow pointing in the direction of the flow. Do not install valve upside down. Flow velocity should
not exceed 5ft./sec. Minimum opening pressure less than 0.5 psi.
Utility Swing Check Valve
Utility Spring Check Valve
A
B
B
C
D
A
B
B
C
D
FLOW
Temperature Pressure Rating
System Operating
Temperature °F (°C)
100
(38)
110
(43)
120
(49)
130
(54)
140
(60)
150
(66)
160
(71)
170
(77)
180
(82)
190
(88)
200
(93)
210
(99)
Valve
Pressure
Rating psi
(MPa)
1/2" - 8" PVC
150
(1.03)
135
(.93)
110
(.76)
75
(.52)
50
(.34)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
150
(1.03)
140
(.97)
130
(.90)
120
(.83)
-110-
(.76)
-100-
(.70)
-90-
(.62)
-80-
(.55)
-70-
(.48)
-60-
(.41)
-50-
(.34)
-0-
(-0-)
Dimensions
Nominal
Size
Dimension Reference (inches, ± 1/16)
A
B
C
D
Socket Threaded/SR Threaded Swing Spring
1/2 1-3/8 2-19/32 2-5/8 4-3/32 2-1/8 2-5/8
3/4 1-3/8 2-5/32 2-1/16 4-1/16 2-1/8 2-5/8
1 1-11/16 2-5/16 2-15/16 4-9/16 2-5/8 2-5/8
1-1/4 2-1/16 2-15/16 3-5/8 5-1/2 3-3/8 3-3/8
1-1/2 2-7/16 3 3-11/16 5-5/8 3-3/8 3-3/8
2 3 3-5/8 4-3/8 6-3/8 4-1/4 4-1/4
2-1/2 3-9/16 4-3/8 5-1/4 7-7/8 5-1/8 5-1/8
3 4-5/16 4-11/16 5-5/8 8-7/16 5-3/4 5-3/4
4 5-1/4 6 7-1/16 10-1/16 6-3/8 6-3/8
6 7-11/16 8-1/2 11-5/16 14-9/16 9-1/4 N/A
8 9-7/16 11-3/16 N/A 19-1/4 11-15/16 N/A