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PENN Controls Products Catalog

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Figure 81: Available Water Pressure 4. Select the proper valve size from the flowcharts by locating a point on a chart that satisfies the flow, the head pressure rise above opening point, and the pressure drop across the valve. Use these equations to convert between U.S. and S.I. units. - 1 dm 3 /s = 3.6 m 3 /h = 15.9 U.S. gal. /min. = 13.2 U.K. gal. /min. - 1 bar = 100 kPa = 0.1 MPa = 1.02 kg/cm 2 = 0.987 atm = 14.5 psi The maximum recommended differential water pressure across a valve is 60 psi (4.1 bar). Figure 82: 3/4 in. V146EK Valve Figure 83: 1 in. V146AL Valve Figure 84: High Refrigerant Pressure 3/4 in. V146GK1 Valves Figure 85: High Refrigerant Pressure 1 in. V146GL1 Valves 258 Refrigeration Products Catalog

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