One of the most challenging demands of bulding-drainage is to prevent backwater. Anti flood valves are used to prevent backwater from entering rooms that lie under sewer level and are equipped with drainage facilities. HL offers a complete and sophisticated range of backwater preventors reaching from simple pendular flaps to electronic sensor-controlled anti flood valves. Fully opening stainless steel flaps, accurate and easy-to-handle manual blockings, big sized cleaning eyes and reliable impermeability by the use of high-quality rubber seals are attributes for the high standards of construction and production. As a matter of course the whole model-range of HL backwater preventors meets the requirements of ÖNORM EN13564-1 and can - depending on the type - be used to prevent backwater of faeces containing or free sewage in rooms under sewer level according to ÖNORM B2501.

HL710.2 DN110
HL712.2 DN125
HL715.2 DN160
HL720.2 DN200

HL710.2EPC DN110
HL712.2EPC DN125
HL715.2EPC DN160

HL710 DN110
HL712 DN125
HL715 DN160
HL720 DN200

HL710.1 DN110
HL712.1 DN125
HL715.1 DN160
HL720.1 DN200

floor drain DN75/110 horizontal with flange, trap seal, 3-way non-return valve, cleaning eye and 3 inlets DN40/50, cut-to-size grate frame 12 - 70 mm / 123 x 123 mm and stainless steel grate 115 x 115 mm. Comes with lot cover.

floor drain DN75/110 horizontal with flange, trap seal, 3-way non-return valve, cleaning eye and 3 inlets DN40/50, cut-to-size plastic extension 34 - 78 mm, cast iron grate frame 150 x 150 mm and cast iron grate 137 x 137 mm. Comes with lot cover.

basement drain DN110 horizontal with removable triple anti-flood valve (2 x automatical, 1 x manual blocking), 2-piece plastic grate 180 x 250 mm and bucket.

basement drain DN110 horizontal with inlet DN50, removable triple anti-flood valve (2 x automatical, 1 x manual blocking), 2-piece plastic grate 180 x 250 mm and bucket.