Series GX15 Pneumatic Chemical Injection Pump
Operating Manual
CP-MAN-PRD-GX15
REV06
EFF. DATE 07/23/2019
Page 9 of 12
NOTE:
To ensure accurate stroke rate measurement, allow sufficient measurement duration. Where possible,
allow at least 15 seconds of gauge drawdown.
NOTE:
At extremely slow stroke rates, a small turn of the speed control valve will alter the stroke rate. Initial
adjustments to the pump stroke rate should use only a few degrees of rotation with the speed control
knob.
3.
AIR/GAS CONSUMPTION
If emissions are a concern, refer to Section 1.3.6 for details on how to use the gas recovery feature of your
CheckPoint pump.
Use the following equation along with the appropriate gas consumption factor from Figure 3 to calculate air/gas
consumption.
Gas Consumption [SCFM] @ 68F = Chemical Flow Rate [GPH] * Gas Supply Pressure [PSIA] * English Gas
Consumption Factor
Gas Consumption [Nm3/Hr] @ 0C = Chemical Flow Rate [LPH] * Gas Supply Pressure [BARA] * SI Gas
Consumption Factor
NOTE:
Gas supply pressure value must be absolute pressure, not gauge pressure (Absolute pressure =
gauge pr atmospheric pressure). For reference, the Earth's atmospheric pressure at sea level
is approximately 1 atm or 14.696 psi or 1.0133 bar.
NOTE:
This is a theoretical consumption rate that will vary depending on gas density and other actual field
conditions. Air/Gas consumption can be minimized by using the minimum supply pressure required
to achieve the target application. Please contact CheckPoint for assistance estimating optimal supply
pressure and associated consumption rate for a particular application.
FIGURE 3: GAS CONSUMPTION FACTORS
GAS CONSUMPTION FACTOR
PUMP
SERIES
PLUNGER
DIAMETER
[IN]
ENGLISH
SCFM
@ 68F
SI METRIC
NM3/HR
@ 0C
GX15
1/4
0.0115
1.0128
