- 35 items in stock
Spiral pipe check valve without rubber seal
Spiral pipe check valve without rubber seal
Non-return valves for spiral duct without sealing rubber
Installing a check valve between a spiral ventilation duct is recommended to prevent backflow of air through the spiral duct. The air pressure created in the pipe will cause the non return valve blades in the valve to open or close. In addition, the back draugt shutter also prevents air from outside entering the pipe.
Various diameters of check valves for an optimal ventilation system
This non-return valve, also called back draugt shutter, is available in various diameters and fits perfectly on a spiral duct of the same size. Besides being able to be placed between spiral ducts, the non-return valve is also suitable for placement between a spiro duct for the extractor hood. Like the spiral ducts, the valve is made of durable galvanised steel for a long service life and meets the strict airtightness class D (ATC 2) requirements. This spiral duct attachment simply plugs into the pipe. No additional connection piece is therefore required for connection.
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