Flow MACH 300, Manual, Page: 171 / 185

Recommended pressure settings for CF900 pressure
regulators
To ensure the pinch valve closes all the way and to help prevent early pinch valve failure, make sure
you use the following settings:
PRI pressure ………………………… 4.83–6.21 bar (70–90 psi)
PR2 pressure …………………………1.38–2.76 bar (20–40 psi)
Required pressure differential between PR1 & PR2 …………………………3.45 bar (50 psi)
Initially, set PR1 to 5.5 bar (80 psi) and PR2 to 2 bar (30 psi). Next, adjust the pressure for PR2 since
this is what pushes abrasive to the metering valve. Pressure may be ok at 2 bar (30 psi), but if you have
to make adjustments, keep it between 1.39–2.76 bar (20–40 psi). After you've established the correct
pressure for PR2, adjust PR1 to 3.45 bar (50 psi) more than PR2. This ensures the pressure differential
of 3.45 bar (50 psi) is maintained.
Schematic
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Retrieved from Flow KB on April 14, 2021 PST
Ancillary option: PASER CF900 Abrasive Delivery System