Duct Stiffener for Internal Reinforcement made of PVC-U PPs PPs-EL PP-H PE-HD PVDF

HVAC systems consist of both round and rectangular ducts and fittings.

To stabilize the ducts against negative overpressure,
reinforcement is required depending on the size and pressure of the duct – the corresponding deflection parameters are regulated in DIN EN 1507.

The duct stiffener serves for internal reinforcement and consists of two parts – a sleeve and an impact bolt.

As a preparatory step, a 20 mm hole is drilled on both sides of the duct.

A tube with a diameter of 32 mm x 3.0 mm, made of the material used in the duct, is clamped into the sleeve.

The impact bolt is then driven in from the outside through the hole with a rubber mallet.

The simple impact system offers the advantage of faster and thus cost-efficient production.

The duct stiffener is available in the following materials:
PVC, white PVC, PPs, PP-H, PP-EL-s, PE-HD and, upon request, in PVDF.