Product Description

A round ventilation transition, also known as a reducer, is used in ventilation systems to smoothly connect two ducts of different diameters. This allows for a change in the channel cross-section while maintaining optimal airflow and minimizing pressure loss.

Key Features and Options

• Two Geometry Types: We supply both concentric (central, axes aligned) and eccentric reducers (axes offset).
• Connection Types: The standard version is "male-male" ("-" connection), for insertion into ducts. "Female" ("+") or "female-male" (+/-) connections can be manufactured on request.
• Construction: Short pressed reducers (for small diameters) and segmented reducers (for large diameters and custom configurations) are available.
• Airtightness Options: The standard version is supplied with EPDM rubber gaskets for Class "D" airtightness. A version without a gasket can be manufactured upon request (to reduce cost).
• Custom Manufacturing: We produce S-shaped transitions ("offsets"/"pants"), as well as items with a custom length or required lateral offset based on your drawings.

Available Reducer Types

Concentric (Central) Reducers

Eccentric Reducers (Offset)

Material and Thickness (for all types):

• Material: Galvanized steel DX51+Z275. Stainless steel (AISI430, AISI304, AISI316), aluminum, and powder coating (according to RAL or RR catalogs) are available on request.
• Thickness: From 0.5 to 0.9 mm depending on the diameter.
• Certification: The products comply with CE, EN 1505:2000 and EN 1506:2007 standards.

Application and Installation Tips

• Installation: Both ends of the reducer (larger and smaller) with gaskets are inserted inside the female sockets of the corresponding diameter ducts, ensuring an airtight connection.
• Sealing: When ordering the version without a gasket, the joints must be sealed with aluminum tape.
• Type Selection: Use a concentric reducer for axial runs and an eccentric one for offset runs (e.g., along a wall or ceiling).

Availability and Ordering

• Availability: Standard concentric reducers (VASPAG), shown in the first table, are kept in stock or delivered within short lead times.
• Custom Order: On request, it is possible to manufacture eccentric reducers (VASPAGA), S-shaped "offsets", connections without a rubber gasket (to reduce cost), non-standard diameters (up to 1250 mm), and any other non-standard variations (including the materials specified in the characteristics).