Product Overview

Utility Spring Check Valves
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Spring Loaded Swing Assembly Maintains a Positive Seal
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Engineered for Maximum Flow, Quick Response &
Positive Shutoff
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Excellent for Pool & Spa, OEM and General Purpose
Applications
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Compact, Space-Saving Design
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PVC White or Clear Sealed Unit
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High Grade EPDM Seat
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Suitable for Horizontal or Vertical Up-flow Installations
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Socket, Threaded, or SR Threaded End Connections
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Pressure Rated to 150 psi @ 73°F Full Flow (open),
75 psi Back Pressure (closed)
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Maximum Service Temperature 140°F
(temperature/pressure de-ratings apply)
General Installation Information:
Spring check valves are
designed for horizontal installations, but may be installed in up
-flow
only vertical position. Check valves MUST be installed with the
valve's FLOW arrow pointing in the direction of the flow. Do not
install valve upside down. Flow velocity should not exceed 5
ft./sec. Minimum opening pressure = 0.5 psi.
PVC White
Size Socket Thread SR Thread
Std
Pk
Mstr
Pk
Disc
Code
1/2
S1580-05
31.20
S1580-05F
31.20
S1580-05FSR
33.84
20 0 026
3/4
S1580-07
35.31
S1580-07F
35.31
S1580-07FSR
39.07
20 0 026
1
S1580-10
36.78
S1580-10F
36.78
S1580-10FSR
42.01
20 0 026
1-1/4
S1580-12
38.30
S1580-12F
38.30
S1580-12FSR
46.71
12 0 026
1-1/2
S1580-15
40.77
S1580-15F
40.77
S1580-15FSR
55.12
12 0 026
2
S1580-20
42.74
S1580-20F
42.74
S1580-20FSR
58.32
15 0 026
2-1/2
S1580-25
75.86
S1580-25F
75.86
S1580-25FSR
100.02
40026
3
S1580-30
79.12
S1580-30F
79.12
S1580-30FSR
120.76
40026
4
S1580-40
112.28
S1580-40F
112.28
S1580-40FSR
155.43
20026
PVC Clear
Size Socket Thread SR Thread
Std
Pk
Mstr
Pk
Disc
Code
1/2
S1580C05
32.15
S1580C05F
32.15
S1580C05FSR
34.82
20 0 026
3/4
S1580C07
36.39
S1580C07F
36.39
S1580C07FSR
40.19
20 0 026
1
S1580C10
37.94
S1580C10F
37.94
S1580C10FSR
43.16
20 0 026
1-1/4
S1580C12
39.50
S1580C12F
39.50
S1580C12FSR
47.89
12 0 026
1-1/2
S1580C15
41.85
S1580C15F
41.85
S1580C15FSR
56.23
12 0 026
2
S1580C20
43.43
S1580C20F
43.43
S1580C20FSR
59.00
15 0 026
2-1/2
S1580C25
78.21
S1580C25F
78.21
S1580C25FSR
102.33
40026
3
S1580C30
81.44
S1580C30F
81.44
S1580C30FSR
162.04
40026
4
S1580C40
115.71
S1580C40F
115.71
S1580C40FSR
158.85
20026
Pressure Rating @ 73°F (23°C), Water
Full Flow (open) 150 psi
Back Pressure (closed) 75 psi
Maximum Service Temperature
140°F (60°C)
Temperature/Pressure De-ratings Apply
NOT FOR USE WITH COMPRESSED AIR OR GAS
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