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When installing a jet or submersible pump it is important to select pipe that has a pressure rating that matches or exceeds the working pressure that will exist in the well.

Two factors are used to determine Working Pressure:

1. Number of feet from the top of the well to the pumping water level:

   • One Foot of Water Depth = .433 PSI

2. The setting of the tank pressure switch(in PSIG)

The following formula will provide the Working Pressure:

(Depth X .433) + (switch setting) = Working Pressure

For example, if the Pumping level is 360 ft. and the Pressure Switch set at 40 PSIG the formula will be:

A pipe with a rating of 200 PSI or greater is needed. Use of pipe with a lower pressure rating may result in pipe failure and will void the Pipe Warranty.

Caution: If the pumping level used to calculate pipe requirements for a well is substantially above the bottom and the pumping level drops due to drought or other conditions, the pressure rating of the pipe could be exceeded.

Depth Settings of Pumps Using Endot Prime Pipe

Maximum Pressure
Switch Setting   0 PSIG     40 PSIG     50 PSIG    60 PSIG
                             Maximum Depth
200 PSI Pipe     457 ft.    365 ft.     343 ft.    320 ft.
160 PSI Pipe     365 ft.    274 ft.     251 ft.    228 ft.
100 PSI Pipe     228 ft.    131 ft.     114 ft.    91 ft.

Note: Endot Deep Well Pipe is manufactured in accordance with ASTM D2239 and D1248. The specification determines the pressure rating of the pipe. Any claims that pipe can be used at greater depths cannot be supported by technical data.

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