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This is a 4" PVC swing check valve for backflow prevention. It features socket ends and an EPDM seat. NSF Certified for potable water use. Minimum order pressure is less than .5 psi. Part No: S1520-40 Size: 4" Open Pressure: 150 psi Back Pressure: 75 psi Max Temperature: 140 deg F Flow velocity should not exceed 5ft/sec
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🇺🇸 Ship from USA · On Agora since 2026
$106.63