Hose clamp with worm drive Norma 220–240 mm, model 73584

Norma worm-drive hose clamp model 73584 is a metal band clamp with an adjustable diameter range of 220–240 mm designed to secure hoses, pipes and ducts where a reliable mechanical fastening is required. The clamp uses a worm gear screw to convert rotational motion into linear movement across the band, producing uniform clamping pressure and allowing easy manual adjustment during installation and maintenance.

Advantages

The hose clamp provides consistent, even pressure around the hose circumference to reduce the risk of leakage and slippage. Constructed from corrosion-resistant metal components, it is suitable for repeated tightening and loosening without loss of grip. The worm-drive mechanism enables precise tension control through a standard screwdriver or nut driver, and the wide diameter range covers a variety of hose and pipe outer diameters within the 220–240 mm span.

Suitable for

• Securing large-diameter rubber or silicone hoses in automotive and heavy equipment systems
• Clamping ventilation ducts and flexible air hoses in HVAC installations
• Fastening hoses and pipes in industrial process lines and machinery
• Temporary or permanent connections where adjustable metal band clamps are required

Key specifications

• Clamping diameter range: 220–240 mm
• Type: Worm-drive (screw) hose clamp
• Material: Metal band with screw-driven housing (corrosion-resistant finish)
• Adjustment method: Screw/worm gear operated with standard screwdriver or nut driver
• Application environment: Suitable for automotive, HVAC and industrial use

How to use

Position the clamp around the hose or duct so the band seats evenly against the hose outer surface and the screw housing is accessible. Rotate the screw clockwise with a screwdriver or nut driver to reduce the clamp diameter until the hose is firmly secured against the fitting or pipe. Avoid over-tightening; tighten until a secure seal is achieved without deforming the hose material. To remove or readjust, turn the screw counterclockwise to increase the diameter and slide the clamp off or reposition as needed.

Usage recommendations

For reliable performance, select the clamp so the hose outer diameter sits well within the 220–240 mm range rather than at either extreme. Inspect the clamped joint after initial operation and periodically during service for signs of corrosion, loosening or hose damage. Use the correct tool size and apply moderate torque to prevent stripping the screw head or damaging the hose.