Den Holder is a manufacturer of all types of Venturi Tubes, which are designed in accordance with our clients’ requirements, or any international standard. The most commonly used standard is ISO 5167, which covers three types of classical venturi tubes:

A: Venturi tube with a cast convergent section
B: Venturi tube with machined convergent section
C: Venturi tube with a rough-welded sheet-iron convergent section

We can machine Type B venturis over inlet and outlet sections over the whole range of ISO 5167. Type C venturis are made out of a machined throat section and sheet steel inlet and outlet conesections. The throat section can be honed to achieve a smoother surface roughness. Type C venturis are reinforced with stiffeners and supplied with lifting lugs.