🚪 ISO 14644-4 (Cascading Differential Pressure +15 Pa / 0.06" WC, Infiltration CFM)

Cleanroom Pressure Cascade Calculator

Size room pressurization and exfiltration airflow through door perimeters and pass-through airlocks to maintain positive or negative pressure cascades under ISO 14644-4 & FDA cGMP: calculate required differential pressure ($Delta P ext{ } +10 ext{ to }+20 ext{ Pa}$ [0.04" to 0.08" WC] between cleanliness zones), calculate door leakage ($Q = 2,610 imes A imes sqrt{Delta P}$), and airflow profits.

1. Project & Operating Inputs

Cleanroom Suites Monitored (Room Count e.g. 12 Cascading Suites)

Differential Pressure Setpoint (Pascals e.g. 15.0 Pa Positive Pressure)

Customer Bid Price for Supplied & Calibrated Pressure Controls ($ / Room)

Setra Room Pressure Monitor, Fast Venturi Air Valve, Pneumatic Tech ($)

2. Financial Breakdown & Yield

ISO 14644-4 PRESSURE CASCADES

Turnkey Cleanroom Pressure Control Profit

Cleanroom Controls Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost