Check valve PP DN 110 double flap type 2, for external drainage systems. ZB2K110

Storm gate – protection against flooding and rodents

The two-flap storm gate with a diameter of 110 mm is a reliable protection for rooms against the effects of sewage backflow. It is ideal for use in sewage systems exposed to flooding due to heavy rainfall, snowmelt or floods. The closing structure, equipped with two independent flaps, provides effective protection against backflow in both sanitary and rainwater sewage systems.

Construction and application

The gate is designed for installation in external sewage systems. Its two-flap operating system minimizes the risk of failure – the pressure acting on the first flap does not directly affect the second, which increases the effectiveness of the protection. Additionally, the gate prevents rodents from entering the building through the sewage system and prevents the spread of unpleasant odors during downtime.

Advantages and benefits for the installer and user

• Durability and resistance: Made of high-quality plastics, resistant to corrosion, low temperatures and the action of chemical compounds. The material ensures long-term use even in difficult environmental conditions.
• Effective protection: Two independent flaps provide double protection against sewage backflow, minimizing the risk of flooding basements and other rooms.
• Hygiene and comfort: Prevents unpleasant odors from the sewage system from entering the building, improving comfort.
• Protection against pests: The flap cover made of stainless steel protects the seal from damage by rodents and prevents it from sliding off during sewage flow.
• Easy installation: Simple construction makes installation easier and faster, saving time and labor costs.
• Self-cleaning construction: Smooth internal surfaces prevent sediment buildup and accumulation of contaminants, maintaining high throughput.
• High operating temperature: Can be used in installations with sewage temperatures up to 95°C.
• No flow obstacles: Lack of internal elements disrupting the flow of sewage ensures its free flow without pressure loss.
• Pressure resistance: Above-standard resistance to internal pressure up to 1.0 bar ensures the safety of the installation.

The KARMAT storm gate is an investment in the safety and comfort of the building, in accordance with applicable technical conditions for buildings. The Zeta value of 1.2 confirms its effectiveness in limiting backflow. The nominal diameter is DN 100, the outer diameter of all connections is 110 mm, the working length of connection 1 is 486 mm and the height of the gate is 227 mm. The angle of the check valve is 90 degrees.