VENTIL MED STANDARDLUFTMAENGD OCH FOERFARANDE Før a valve regulating the MED STANDARDLUFTMAENGD.

摘要

PCT No. PCT/FI86/00100 Sec. 371 Date May 1, 1987 Sec. 102(e) Date May 1, 1987 PCT Filed Sep. 25, 1986 PCT Pub. No. WO87/02120 PCT Pub. Date Apr. 9, 1987.A constant air flow rate valve with changing cross-section, and having a throttling member disposed within a passage of changing cross-section, the throttling member changing shape depending upon differential pressure across the passage section. The throttling member is also disposed to be displaceable in a direction of a central axis of the passage section, for imposing a set-point value of flow rate. A procedure for controlling the constant air flow rate valve is also provided.