Backflow Prevention

KARZB100 Backflow Valve DN100

Backflow Prevention Valves

Description

Backflow Prevention Valves (non-return valves) effectively secure any rooms located on the lower floors against flooding caused by back flow of storm water and sewage. Back flow may be caused by intense rains, thaw or floods. BS8515 recommends the use of backflow prevention valves for underground rainwater systems.

The flap’s protecting guard as well as all mounting elements (screws, nuts and washers) are made of chromium-nickel stainless steel type 0H 18N9.

The shape of the protecting guard and gasket has been designed to protect against damage of the gasket by rodents and sliding during sewage flow.

Backflow Prevention Valves are equipped with a manual closure lever. It enables protection against unpleasant smells in case of longer breaks in household sanitary system use.

KARZB1102K double flap backwater valve

Double/Triple Backflow Prevention Valves

Description

Double Flap Backflow Prevention Valves provide an extra level of protection against flooding fue to backflow of water in drainage pipes.

Backflow Prevention Valves (non-return valves) effectively secure any rooms located on the lower floors against flooding caused by back flow of storm water and sewage. Back flow may be caused by intense rains, thaw or floods. BS8515 recommends the use of backflow prevention valves for underground rainwater systems.

The flap’s protecting guard as well as all mounting elements (screws, nuts and washers) are made of chromium-nickel stainless steel type 0H 18N9.

The shape of the protecting guard and gasket has been designed to protect against damage of the gasket by rodents and sliding during sewage flow.

Backflow Prevention Valves are equipped with a manual closure lever. It enables protection against unpleasant smells in case of longer breaks in household sanitary system use.

 

KARZBK110 flap valve

Drainage Flap Valves

Description

Flap valves are innovative devices protecting rooms on the lower levels against flooding caused by backward flow of storm water and sewage. These devices are fully self-activating. Flap valves effectively protect plumbing systems from rats entering buildings, and are ideal for installation in existing inspection chambers or outfall pipes.

All flap valves are equipped with a chromium-nickel cover  A protecting the flap and gasket. Additionally a chromium-nickel cover of the lever  B has been introduced. They protect against rodents, atmospheric and the environmental conditions (eg. river flow).


vertical backflow

Vertical Backflow Prevention Valves

Description

While most Backflow Prevention Valves are designed solely for horizontal installation, our Vertical Backflow Prevention Valve can be installed vertically, enabling it’s use where horizontal installation is not feasible due to either cost or practical constraints.

A backflow valve mounted on a vertical drain pipe is  often the only way of protecting a building against flooding.

The valve has successfully passed a series of tests required by the EN 13564 standard and received the CE mark. Studies conducted by independent, external laboratory showed excellent efficiency and effectiveness of valves in the upright position.

The designed manual closure, allows you to use it also in a vertical position, and provides the possibility to verify proper valve operation without removing the cover.