NOTE: Take care to prevent debris in the supply gas line from entering the main spool housing and
switching valves, where it could accelerate seal wear and damage the main switching valve
components.
NOTE: In situations where sand, dirt, and other particulate matter may be carried in with the supply gas, a
filter and/or a scrubber is recommended.
1.3.4 Connect the supply gas line to the 1/2" FNPT female connection on the housing. Use a minimum of ¾ tubing.
To ensure positive injection, the supply gas pressure should be a minimum of 50 PSIG and a maximum of 200 PSIG,
set according to the following formula:
REQUIRED GAS INLET PRESSURE =
[DISCHARGE PRESSURE]
X 1.3
[AMPLIFICATION RATIO]
1.3.5 Faster pump speeds can be obtained by increasing the gas inlet pressure from the minimum required by the
formula above.
NOTE: To find the Amplification Ratio for your pump, please see Figures 2 and 3 below.
NOTE: If the above formula yields a result of < 50 PSIG, use 50 PSIG as your supply pressure.
FIGURE 2: AMPLIFICATION RATIO TABLE, 5400 SERIES
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