| Round duct system
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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