Feeding of pneumatic conveying systems
242 Feeding of pneumatic conveying systems where K 2 is the loss factor for tapered contractions and lies between and for included angles less than 45°. At an included angle of 25° a typical loss factor of K 2 = the basis of the discussions for K 1 it must be noted that there is no need for correcting K 2. Venturi calculations start with the downstream static pressure