Non-return valve with patented technology
Protection against backflowing flue gas in shared chimney systems and cascade layouts.
The CoxDENS® PP non-return valve is an innovative new development and currently the most compact of its kind on the market.
Available in D60, D80 and D110 mm.
Non-return valve for shared chimney systems and cascade layouts
When a heating system is designed in a multiple or cascade configuration, there are specific challenges regarding the connected flue gas systems. There is a risk that flue gas from operation heaters will flow through the common flue system into inactive or failed boilers. To mitigate this risk, a mechanical safety device in the flue gas pipe is required in addition to the electronic backflow safety device in the boiler.
The mechanical safety device must close off the flue gas path to a switched-off boiler. The non-return valve completely fulfils this requirement. Additionally, the patented condensate drain with integrated siphon allows for the largest possible cross-sectional area to be retained while only minimally increasing the operating pressure of the boiler.
Available in diameters D60, D80 and D110 mm.
Exclusively sold in combination with our connecting material CoxDENS® PP or PPs.
More information? Please contact our Sales department.
• Patented technology • innovative •
• Can be retrofitted to existing systems •
Advantages
- Effectively protects against flue gas backflow.
- Sophisticated and functional technology including siphon function.
- Error-resistant closing mechanism.
- Siphon with controlled backflow of condensate.
- Easy assembly and disassembly.
- Can be retrofitted to existing systems.
- The most compact variant on the market in D60.
- Exceeds the service life required by DIN 15502-2-1.
Properties
- Material: polypropylene with flame-retardant additive.
- Flue gas temperature: up to 120°C.
- Diameter: D60, D80, D110.