SYSTEM PERFORMANCE 15
Rev C
Flow Information for Standard Installations
For typical single faucet under-the-sink Merlin installations using only the
components shipped in the box, the following flow rates can be expected.
This information assumes 4 feet of 3/8-inch permeate tubing, 2 feet
elevation difference, use of the faucet as shipped, and no additional
obstructions or pressure drop. Data shown is based on water containing
750 ppm NaCl.
Table 2 - Merlin System Flow Rates, gpm, based on
750 ppm NaCl Inlet Water
a
Typical Single Faucet Installation
Flowing Inlet Pressure psi [bar]
Temperature
°F [°C]
80
[5.5]
75
[5.2]
70
[4.8]
65
[4.5]
60
[4.1]
55
[3.8]
50
[3.4]
45
[3.1]
40
[2.8]
80 [27] 0.77 0.73 0.68 0.64 0.59 0.55 0.50 0.45 0.40
70 [21] 0.72 0.68 0.63 0.59 0.55 0.50 0.46 0.41 0.36
60 [16] 0.65 0.61 0.57 0.53 0.49 0.45 0.40 0.36 0.31
50 [10] 0.57 0.53 0.49 0.45 0.42 0.38 0.34 0.30 0.26
a. To adjust data to actual conditions, multiply measured TDS by -0.0002 and add 0.15.
Add answer to Table data to achieve actual flow rate. Estimated flow change from 750
ppm NaCl = -.0002 X measured TDS + 0.15
NOTE: Actual system performance may vary because of
manufacturing tolerances and installation factors.
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