ERA Backwater 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. Use of anti-flooding devices for rooms located on the lower floors is required by obligatory regulations related to technical conditions that are to be satisfied by building regs.
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Inner Plug Check Valve Spool Plastic Check Valve Inline Spring Check Valve Pipe Check Fittings
Aliexpress UK
Backwater valve 50mm in version C is designed for installation in new or altered sewage systems. The backwater valve in version B is connected to the 50mm pipe socket of an existing pipe fitting in the wall.
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Inner Plug Check Valve Spool Plastic Check Valve Inline Spring Check Valve Pipe Check Fittings
Aliexpress UK
Back flow may be caused by intense rains, thaw or floods. Use of anti-flooding devices for rooms located on the lower floors is required by obligatory regulations related to technical conditions that are to be satisfied by building codes.
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8 Pcs 1/4Inch Check Valve 6mm PVDF One Way Valve Inline Check Valve Non Return Check Valve for Fuel Gas Liquid Air
Aliexpress UK
Back flow may be caused by intense rains, thaw or floods. Use of anti-flooding devices for rooms located on the lower floors is required by obligatory regulations related to technical conditions that are to be satisfied by building codes.
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8~50mm Inner Plug Check Valve Spring Check Valve Garden Irrigation Aquarium Pipe Check Fitting Water Meter Valve Anti Drip Valve
Aliexpress UK
Capricorn 50mm Anti flood valve. Brand new in box
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304 stainless steel H71W-16P Clamp-on check valve Check valve for water pipe pump Check valve 4 minutes, DN20 25 50 65 80 100
Aliexpress UK
Users also benefit from protection against rodent infestation. The product prevents foul water flowing back from the blocked sewerage systems to flood the property from the inside via toilets, plug holes and waste pipes.
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Check Valve, 1 Inch, Check Valve Made of High-Quality Brass, Backflow Preventer for Garden Pump, Check Valve Waste Water
Aliexpress UK
Back flow may be caused by intense rains, thaw or floods. Use of anti-flooding devices for rooms located on the lower floors is required by obligatory regulations related to technical conditions that are to be satisfied by building codes.
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1Pcs Pneumatic Check Valve Control Valve Air Valve 1/8 1/4 3/8 1/2 3/4BSP internal threaded brass pneumatic one-way check valve
Aliexpress UK
Back flow may be caused by intense rains, thaw or floods. Use of anti-flooding devices for rooms located on the lower floors is required by obligatory regulations related to technical conditions that are to be satisfied by building codes.
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Plastic Check Valve Water One-way Valve Water Stop Valve Inline Fluids Check Valves for Fuel Gas Liquid 2Pcs
Aliexpress UK