IMH Precision Orifices
IMH Precision Orifices are economical, reliable, highly accurate miniature flow restrictors. They are available for installation in both metal and plastic, and are 100% flow tested to ensure that every orifice is within ± 5% of its nominal flow rate. Tighter tolerances are available as specials. Tight flow tolerances are only possible if entrance and exit conditions of the orifice are closely controlled. This provides far more accuracy than an orifice specified by hole tolerance. An ordinary hole held to a very tight hole tolerance will not result in a tight flow tolerance.
IMH Precision Orifices are available in forward and reverse flow directions and in gas and liquid versions. Integral safety screens are incorporated where the orifice diameter is 0.5mm (.020") or below.