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  1. JoseCH

    Differential Pressure between Clean Rooms Classes

    That's exactly the point. After the explanation tip I got (5 lbf) it seems that in theory it does matter (1/8" or 1/2", however from my practical experience this 0.05"wg value has likely been maintained from one project to the next, from one company to the other, along the time being. That...
  2. JoseCH

    Differential Pressure between Clean Rooms Classes

    Thank you very much... According to the given codes, for a 3 x 7 hinged door P = 5 lbf / 21 sqft = 0.238 lbf/sqft which is exactly 0.05 in wg. PERFECT! This means that the Differential Pressure could turn dependent on the door size, eg, Bigger doors less Delta P. Smaller doors higher Delta P. Is...
  3. JoseCH

    Differential Pressure between Clean Rooms Classes

    WHat is the PHYSICAL reason for the 0.05"wg ? (Sometimes acceptable 0.04 to 0.06) value for DP? WHy not smaller of larger

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