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Teejet Electric Valves Information
B Style Shutoff Motor Numbers
Items marked with “*” are non-stock items. ** Current draw is a nominal rating @ 13.8 VDC and will vary dependent upon valve usage and chemicals used. Note: DIN cables are ordered separately.
*Bypass Valve (Normally Open) BEC Motors
Items marked with “*” are non-stock items. ** Current draw is a nominal rating @ 13.8 VDC and will vary dependent upon valve usage and chemicals used. Note: DIN cables are ordered separately.
344B & 346B Regulating Motors
Items marked with “*” are non-stock items. ** Current draw is a nominal rating @ 13.8 VDC and will vary dependent upon valve usage and chemicals used. Note: DIN cables are ordered separately.
Electric Regulating Valves
DirectoValve® Electric Pressure Regulating Valves
The proper regulating valve will enhance the operation of a sprayer, especially one with an automatic rate controller. While advanced electronics provide features and control, the proper regulating valve helps the system to respond quickly to input changes and functions over a wide range of application rates. Choosing the proper valve involves determining the maximum capacity required, the range of application rates and the proper motor speed.
System Capacity
A regulating valve’s system requirements will depend on the application amount and the pumping capacity. Additionally, the regulating valve can be used in bypass or throttling mode. In throttling mode, the flow through the valve will be applied through the nozzles. In bypass mode, the excess flow from the pump is recirculated. A valve that works well throughout the flow spectrum has the best chance to work in all situations.
Types of Regulating Valves
Special ball shapes make regulating valves more responsive and able to work with both high and low application rates. Most agricultural sprayers use either a 2-way ball valve or butterfly valve for regulating purposes. When considering sizing a regulating valve, the first concern is to understand the valve’s flow curve to determine how efficiently the valve will regulate. Figure 1 shows typical flow curves for DirectoValve® regulating type valves. This will help to decide the type of valve to use.