The actual requirements would never really exceed .5psi and would be variable flow/pressure. In full flow conditions, it would be normal to see only 10-20"wc. Really the flow volume is the biggest component but the system must run with reasonable pressure because it has to close a check valve...
We got involved with a company to help design a device. It is a consumer to light commercial grade product. The air blower requirements are .5-1.0psi/40-80cfm. Only pumping ambient air. Blower requirement are primarily longevity, low noise, and cost.
Primarily a regenerative blower has...
