Venturis & Nozzles 

A venturi is an integral component of some pulse-jet collectors.  It directs the blast of compressed air into the center of the filter bag to prevent abrasion caused by misaligned blowpipes and turbulent airflows.  If venturis become damaged or worn, compressed air doesn’t gain the velocity required to effectively clean the filter bags.

Nozzles measurably increase developed pressures in filters during reverse pulse cleaning by balancing the flow through all holes along the blow tube, ensuring that the pulse jet is directed fully into the filters, and minimizing the pressure drop through the blow tube holes.