Round duct system

Round Ventilation Coupling – Female

manufacturer: Akvilon | Kods: VASMUA

Ventilation Coupler (External Connection)

Product Description

A ventilation coupler is a connection element designed to assemble system sections consisting of fittings. Unlike a nipple, a coupler is used to connect two fittings (e.g., two bends, a bend and a tee, or a silencer and a reducer) together.

The coupler has a female (socket) design on both sides. It features an internal stop bead in the center, which helps to correctly position the connected parts.

Key Features and Options

  • Main Function: Connecting two fittings that cannot be connected directly to each other.
  • Construction: Consists of a pipe section with an inner diameter matching the outer diameter of the fitting, with a stop bead in the middle.
  • Connection Type: External (female/socket). Connects two spigots.
  • Reliable Material: The standard version made of galvanized steel (DX51+Z275) ensures durability and corrosion protection.

Available Diameters and Specifications

Standard Couplers (VASMUA)
Diameter D (mm) Insertion Depth H (mm) Article
100 40 VASMUA100
125 40 VASMUA125
160 40 VASMUA160
200 40 VASMUA200
250 40 VASMUA250
315 40 VASMUA315
355 40 VASMUA355
400 40 VASMUA400
450 45 VASMUA450
500 55 VASMUA500
560 55 VASMUA560
630 55 VASMUA630

Material and Thickness:

  • 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

  • Connecting fittings: Insert the spigots of two connected elements (e.g., two bends) into the coupler sockets on both sides until they hit the stop.
  • Sealing: If the connected fittings have rubber gaskets, the connection will be airtight immediately. If there are no gaskets, the joints must be sealed with aluminum tape.
  • Fastening: It is recommended to additionally secure the connection with self-tapping screws or rivets.

Availability and Ordering

  • Availability: All couplers shown in the table are supplied on a custom-order basis.
  • Custom Order: We manufacture couplers with non-standard diameters (up to 1250 mm) and any other non-standard variations (including the materials specified in the characteristics).

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