Applying Low Application Rates

When applying low application rates, it may be necessary to turn orifice valve (A) to the closed (low) position.

To determine when to close orifice valve, calculate boom flow rate. When solution flow rate is 100 Lpm (26 gpm) or less, close the orifice valve. If solution flow rate is greater that 100 Lpm (26 gpm) open orifice valve all the way.

A-High/Low Flow Valve

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Determining Solution Flow Rate:

When spraying, go to Page 2 of RUN and check solution flow rate on Line E. If solution flow rate is 100 Lpm (26 gpm) or less, close the orifice valve. If solution flow rate is greater than 100 Lpm (26 gpm) open orifice valve all the way.

Determine size of nozzles and multiply by the total number of nozzles on the boom. If solution flow rate is 100 Lpm (26 gpm) or less, close the orifice valve. If solution flow rate is greater that 100 Lpm (26 gpm) open orifice valve all the way.

Example: If 8003 type nozzles are installed and there are 54 on the boom: 0.3 gpm x 54 = 16.2 gpm (solution flow rate).

Operator would close orifice valve.

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