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Figure 76: Companion Flange Kit V47 Series Temperature Actuated Modulating Valve technical specifications V47 Series Temperature Actuated Modulating Valves Maximum Bulb Temperature 20F° (-6.7 C°) above temperature range Maximum Water Temperature 170°F (77°C) Maximum Supply Water Pressure 150 psig (1,034 kPa) Capillary Nylon Armor 1 Temperature Bulb Style 4 2 (pictured) (1/2 in. NPT closed tank immersion) 1 For capillary length, refer to the selection chart on the previous page. 2 V47AA-26, V47AB-2, V47AB-27 — Temperature Bulb Style 1 (no 1/2 in. NPT external fitting) Table 277: Metric Conversion °F °C 20 to 65 -6 to 18 40 to 85 4 to 29 75 to 115 24 to 46 75 to 135 24 to 57 115 to 160 46 to 71 115 to 180 46 to 82 160 to 205 71 to 96 160 to 230 71 to 110 V47 Valve sizing information To Select Water Valve Size, see the flow chart for selection of water valves. Carefully follow the steps as outlined below. 1. Determine the maximum water flow required. Draw a horizontal line through this flow across the upper half of the flow chart. 2. Use the following method to determine the temperature rise above the opening point. a. Valve closing point is the highest temperature at which it is desired to have no flow through the valve. b. Valve opening point is about 5F° above the closing point. c. Determine the temperature the valve is to maintain, this is the operating temperature. d. Subtract the opening temperature from the operating temperature. This is the temperature rise above the opening point. 3. Determine the available system pressure for use with the valve by the following appropriate method: Open System: Available System Pressure = Inlet Pressure - condenser pressure drop - friction losses in piping. Closed System: Available System Pressure = Inlet Pressure -static head - condenser pressure drop-friction losses in piping. The available sys- tem pressure is represented by the curve in the lower half of the flow chart. 4. In the lower half of the flow curve, draw a horizontal line from the temperature above the opening point (Step 2d) to the available system pressure (Step 3). If the point falls between two pressure drop curves, use the curve to the left (this gives an automatic factor of safety). 5. From this point, draw a vertical line until it intersects the flow line from Step 1. 6. If the intersection falls on a valve size curve, this is the valve size. 250 Refrigeration Products Catalog

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