TinnerFlow™Round, Spiral & Flat Oval Duct
Round pipe, spiral duct, flat oval, collars, saddle taps, reducers, lockseams, and round fitting problems.
Round, Spiral & Flat Oval Duct questions
How do I handle and install exposed double-wall spiral duct without scratching it?3rd Year · Stop / VerifyHow do I ensure fire-stopping is done correctly around duct penetrating a floor slab?3rd Year · Stop / VerifyWhy would spiral duct bulge or unzip at the lockseam under pressure?4th Year · Check firstShould round duct through a block wall have a sleeve?2nd Year · Check firstWhy can an adjustable round elbow split open on a high-velocity duct run?3rd Year · Check firstWhy are thin hanger straps slicing into round duct?2nd Year · Check firstCan a round pipe hanger be too tight?2nd Year · Check firstWhy does spiral duct drift side-to-side in teardrop hangers?2nd Year · Check firstWhy did the inner liner buckle when installing double-wall spiral duct?3rd Year · Check firstWhy is flat-oval spiral duct bowing or pancaking under static pressure?3rd Year · Check firstWhy does a crooked field cut make spiral duct run out of line?1st Year · Standard CorrectionCan you save spiral pipe after the lockseam unzips?2nd Year · Check firstWhy does a round saddle tap whistle after install?2nd Year · Standard CorrectionWhy can a concentric reducer cause water pooling in round duct?3rd Year · Check firstWhy are loop hangers buckling round spiral duct?2nd Year · Check firstCan a vertical spiral riser be supported by wall straps on studs?3rd Year · Stop and get directionWhy is round spiral duct amplifying low-frequency fan noise?3rd Year · Standard CorrectionWhy did the round volume damper blade get stuck in spiral duct?3rd Year · Check firstWhy did the slot diffuser boot rotate after connecting the round branch?2nd Year · Standard CorrectionCan over-tightening round companion rings cause leaks?3rd Year · Standard CorrectionWhy is there a gap under the heel of a round saddle tap?2nd Year · Standard CorrectionWhy is shower or locker exhaust leaking water through spiral duct seams?3rd Year · Check firstHow much collar engagement does a spiral fitting need?2nd Year · Check firstWhy did the spiral 45-degree elbow slide off its collar during testing?2nd Year · Check firstWhy is a short-radius 45-degree elbow hurting fan performance?3rd Year · Check firstWhy is a sloped spiral run sliding downhill in teardrop hangers?3rd Year · Stop and get directionWhy does a 45-degree spiral riser keep slipping out of the elbow throat?3rd Year · Check firstHow do I avoid the rounded-face sheet metal slant (denting the duct)?1st Year · Field ReferenceHow do I avoid the flying un-chained plasma torch ground?1st Year · Field ReferenceHow do I avoid the loose-shaft hole-saw core wobble?1st Year · Field Reference