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Teejet Catalog 51 - Farmco Distributing Inc

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Plumbing Diagrams<br />

The following diagrams have been developed to serve as a guideline<br />

for plumbing agricultural sprayers. Similar manual valves may be<br />

substituted for electric valves. However, the sequence in which these<br />

valves occur should remain the same. Note that one of the most<br />

common causes of premature valve failure is improper installation.<br />

Positive Displacement Pump<br />

Piston, roller and diaphragm pumps are all types of positive<br />

displacement pumps. This means that pump output is proportional<br />

to speed and virtually independent of pressure. A key component<br />

in a positive displacement system is the pressure relief valve. Proper<br />

placement and sizing of the pressure relief valve is essential for safe<br />

and accurate operation of a positive displacement pump.<br />

bypass<br />

line<br />

bypass<br />

line<br />

bypass<br />

line<br />

agitation<br />

line<br />

throttling<br />

valve<br />

agitator<br />

diaphragm<br />

pump<br />

line strainer<br />

tank shutoff<br />

bypass<br />

line<br />

agitation<br />

line<br />

throttling<br />

valve<br />

agitator<br />

diaphragm<br />

pump<br />

line strainer<br />

tank shutoff<br />

to sprayer<br />

control<br />

pressure<br />

relief<br />

valve<br />

to sprayer<br />

control<br />

to sprayer<br />

control<br />

2-way boom<br />

control manifold<br />

to sprayer<br />

control<br />

pressure<br />

relief<br />

valve<br />

to sprayer<br />

control<br />

to sprayer<br />

control<br />

3-way boom<br />

control manifold<br />

electric<br />

regulating<br />

valve<br />

flowmeter<br />

electric<br />

regulating<br />

valve<br />

flowmeter<br />

boom section 1<br />

boom section 2<br />

boom section 3<br />

boom section 1<br />

boom section 2<br />

boom section 3<br />

Two-Way Plumbing Diagram (Positive Displacement)<br />

Three-Way Plumbing Diagram (Positive Displacement)<br />

Non-Positive Displacement Pump<br />

The centrifugal pump is the most common non-positive<br />

displacement pump. The output from this type of pump is influenced<br />

by pressure. This pump is ideal for delivering large volumes of liquid<br />

at low pressures. A key component of the centrifugal pump is the<br />

throttling valve. A manual throttling valve on the main output line is<br />

essential for the accurate operation of the centrifugal pump.<br />

flow back line<br />

(unrestricted flow<br />

to top of tank)<br />

bypass<br />

line<br />

throttling<br />

valve<br />

agitation<br />

line<br />

agitator<br />

line strainer<br />

tank shutoff<br />

bypass<br />

line<br />

throttling<br />

valve<br />

agitation<br />

line<br />

agitator<br />

line strainer<br />

tank shutoff<br />

to sprayer<br />

control<br />

electric<br />

regulating<br />

valve<br />

throttling<br />

valve<br />

flowmeter<br />

centrifugal<br />

pump<br />

to sprayer<br />

control<br />

to sprayer<br />

control<br />

2-way boom<br />

control manifold<br />

to sprayer<br />

control<br />

electric<br />

regulating<br />

valve<br />

throttling<br />

valve<br />

flowmeter<br />

centrifugal<br />

pump<br />

to sprayer<br />

control<br />

to sprayer<br />

control<br />

flow back<br />

boom control<br />

manifold<br />

boom section 1<br />

boom section 2<br />

boom section 3<br />

Two-Way Plumbing Diagram (Non-Positive Displacement)<br />

boom section 1<br />

boom section 2<br />

boom section 3<br />

Flow Back Plumbing Diagram (Non-Positive Displacement)<br />

TECHNICAL INFORMATION<br />

141

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