Square D Pressure Switch, (1) Port, 1/4-18 in FNPT, SPDT, 1.5 to 75 psi, Standard Action 9012GAW4 | Zoro
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Amazon.com: Square D Diaphragm Pressure Switch, Differential: 10 to 1.5 psi, Range: 5 to 250 psi, NEMA Rating 4, 4X, 13 : Industrial & Scientific
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Amazon.com: Square D Diaphragm Pressure Switch, Differential: 6 to 30 psi, Range: 3 to 150 psi, NEMA Rating 4, 4X, 13 : Industrial & Scientific
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