This rugged blower/vacuum system handles 1/2" to 6" conduit. Blo-Vac systems are designed to provide a convenient means of installing pull line in a "sealed" conduit. "Sealed" conduit for this purpose is considered EMT conduit with compression type couplings, rigid conduit with threaded joints, or PVC conduit with adhesive bonded joints. Conduit with set screw type couplings does not effectively seal joints and substantial air or vacuum loss occurs making it difficult to maintain pressure or vacuum to place a line in the conduit.

• Product NOT usable for conduit runs that have set-screw fittings that have not been sealed