Nelson 800 Series Application Manual
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Summary of Contents for Nelson 800 Series
- Page 1 800AG-4 800 SERIES CONTROL VALVES CONTROL VALVE APPLICATION GUIDE By Tom Young, P .E., M.S.
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Page 2: Types Of Controls
Pressure Control Valves Rate-Of-Flow Control Valves Combination Valves Special Purpose 2.0 SELECTING THE RIGHT VALVE 2.1 UNDERSTANDING THE CONTROL FUNCTIONS Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com... - Page 3 Control Valve SELECTING THE RIGHT VALVE Application Guide 2.2 TYPICAL VALVE APPLICATIONS 2.3 800 SERIES SLEEVE VALVE PARTS TERMINOLOGY Figure 1 Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
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Page 4: Typical Control Applications
Control Valve TYPICAL CONTROL APPLICATIONS Application Guide Figure 2 Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com... -
Page 5: Manual On-Off
AUTO RATE-OF-FLOW CONTROL RATE-OF-FLOW CONTROL Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com... - Page 6 = 28 PSI 80 PSI — C3 MODEL begin opening = 6 PSI fully open = 18 PSI Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 7 Control Valve PROPER VALVE SIZING Application Guide DP = (Q/C v ) NOTE: Graph 1 Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 8 A NOTE OF CAUTION: RATE OF FLOW 4.0 UNDERSTANDING HOW THE PRESSURE CONTROL REGULATOR WORKS 4.1 DIFFERENCES BETWEEN 3-WAY AND 2-WAY REGULATORS Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 9 The sleeve chamber pressure is opened to vent to the atmosphere. is opened to upstream pressure until the set point is reached. Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 10 FULLY OPEN OR CLOSE VALVE 8" 4 quarts 6" 2 quarts 4" 1 pint 3" 1 cup 2" 5 oz. (145ml) Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 11 5.2 USE AIR VENTS TO PREVENT AIR ACCUMULATION Figure 7 5.3 SOME THINGS WHICH CAN HELP REDUCE THE DANGER OF WATER HAMMER • • • • Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 12 ATE OF 6.0 ELECTRICAL APPLICATIONS 6.1 VALVE WIRING (FROM THE CONTROLLER TO THE VALVE) Figure 8 6.2 METHODS OF WIRE SIZING Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 13 EXAMPLE OF USING TABLE 4: Enter the table for 50 PSI maximum line pressure. Find the maximum length of wire run (distance from controller to valve) using 14 AWG power wire and 16 AWG common wire is 2132 feet. Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 14 Table 7 Table 5 Table 6 Eq. 1 R w = AVL * 1000 L * 2 * I inrush Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
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Page 15: Safety First
Control Valve ELECTRICAL APPLICATIONS Application Guide Figure 9 6.3 WHEN YOU NEED TO USE DC POWER SAFETY FIRST! Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com... - Page 16 This system is like a long freight train ... it is not always constructive to micro manage the pressure. Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 17 Control Valve APPENDIX B Application Guide FILTER SELECTION FOR THE 800 SERIES VALVE EXTERNAL FILTER (option H2) INTERNAL FILTER (option H3) Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 18 The same pressure control is used for both the reducing and sustaining. Only the port label and hook up of the tubing varies. Conversion from reducing to sustaining is made easy by using the #9519 label. Manual selector valve Remote hydraulic relay Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com...
- Page 19 509-525-7660. WARRANTY and DISCLAIMER Nelson Irrigation Corporation 800 Series Control Valves are warranted for one year from date of original sale to be free of defective materials and workmanship when used within the working specifications for which the product was designed and under normal use and service.