Rainwater pipe flaps from GRÖMO – Attention: detour.

The right flap for every requirement.

With a rainwater pipe flap, also called a downpipe flap or rain pipe flap, can divert rainwater out of the downpipe and into a rain barrel when opened. If the flap is closed, the water continues to flow towards the sewer system. Rainwater pipe flaps from GRÖMO are available in different sizes - matching the size of the downpipe, of course. The flap can also be adjusted to the rest of the system depending on the material of the rain gutter and downpipe. Whether zinc, pre-weathered zinc, copper, galvanized steel, Uginox Patina K41, stainless steel, or aluminum, everything is possible in terms of material. The rainwater flap can also be fitted with a built-in sieve, optionally, which allows the accumulating dirt to be filtered in the sieve when the rain barrel is full, and then removed when it opens. You can choose between the “normal” design, the flap with ball, and the designer rainwater pipe flap.

Two ways lead into the pipe.

The flap is relatively easy and quick to install. There are two options for installation:

1.  Installation done in parallel with attaching a new drainpipe. In this scenario, the downpipe is prepared so that the flap, as described in the installation instructions, can be stuck on the right spot in the rainwater downpipe.
    
2.  The rainwater pipe flap is retrofitted in the existing downpipe. A piece is removed from the downpipe for this scenario. The flap is easily inserted into this hole. Due to the wider internal diameter of the flap at the upper end and the smaller diameter on the lower side, the overlaps are designed so that they are stuck in the direction of flow of the rainwater.