MARKET PRODUCT(S) REQUIREMENT PROCESS FLUID(S) INLET PRESSURE/TEMPERATURE Chemical Feed – Horticulture Series ABVS Air (Water) to Open by Spring to Close Actuated Ball Valves To provide automatic low pressure shutoff of liquid nutrient/fertilizer lines. Water and Liquid Nutrients/Fertilizer Vacuum to 80 PSI / Ambient A major southern horticulturist needed a “Fail- Safe” method of automatic shutoff of liquid nutrients when his water pressure would

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