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Buying advice 03/11/2026 INVENTĀRS
How to choose a drainage system
Drainage is not a “pretty” choice — it is functional. The wrong diameter or an indoor pipe outdoors ends in smell, blockage or a broken line. This guide sorts drainage choice. Alongside: siphon, plumbing map. First — where the line goes PlaceWhat to takeWhat not to fit Indoors (HT)Indoor system, e.g. Ostendorf HTOutdoor PVC “because cheaper” Outdoor / groundOutdoor-class pipes (PP/PVC/PE per project)Indoor HT without protection Details: indoor or outdoor. Diameter (DN) — briefly DN50 often for basin/shower locally; DN110 — stacks/toilet. Numbers must match the project. Full ..
Buying advice 03/11/2026 INVENTĀRS
How to choose a siphon
A siphon is a “water seal”: it stops drain smells coming back into the room. The wrong diameter or type ends in smell or a leak. This guide — siphons and wastes. Related: drainage, smells. By appliance ApplianceWhat to look forExample Basin1¼ × 32/40 mm, with/without overflowViega 1¼×40, Viega 1¼×32, Wirquin chrome BathBath siphon with plug/chain, 40/50Viega bath siphon Shower trayShower siphon, often Ø90 capViega shower siphon, Geberit cap Material Plastic — typical and practical. Chrome brass — for visible places (Viega chrome, Wirquin Quick Clac black). Design does not he..
Comparisons 03/11/2026 INVENTĀRS
Indoor or outdoor drainage
Both pipes can be grey — but the class differs. Drainage guide. Indoor (HT)Outdoor EnvironmentRoom, stack, local linesGround, frost, load ExamplesHT DN50, HT DN110Outdoor PP/PVC/PE per project MistakeFitting outdoor “because thicker”Fitting HT outdoors without protection Diameters: DN explanation. Drainage.
Comparisons 03/11/2026 INVENTĀRS
Point drain or linear channel
In the shower zone water can be collected at a point (drain) or along a line (linear channel). Both work — if there is fall and waterproofing. Basics: drainage. Point drainLinear channel LookGrate at a pointNarrow line at wall/edge Tile fallTo a point (4 directions)Often to one line When to chooseClassic showerLevel floor, “walk-in” Shower siphon example: Viega shower siphon, cap Geberit d=90. That is not a basin siphon (siphon guide). Drainage · Baths and showers.
Guides 03/11/2026 INVENTĀRS
What drainage diameter (DN) means
On a drainage card you see DN50 / DN75 / DN110. That is the nominal diameter. Basics: how to choose drainage. DNTypical use (indicative)Examples 50Basin, bidet, local lines×250, ×500, ×1000 75Some showers / intermediate lines (per project)×500, ×1000 110WC, stack, main lines×250, ×500 Compensation short pipes: DN50, DN110 — for installation convenience, not “to reduce diameter”. Rule: do not reduce diameter in the flow direction without a project. Drainage.
How-to 03/11/2026 INVENTĀRS
How to replace a siphon and waste
Replacing a siphon is a common job after smell or a leak. Choice: how to choose a siphon. Place a bucket; disconnect the old siphon. Read the diameters (1¼/1½, 32/40/50) — buy the same class: Viega 1¼×40, 1¼×32, bath. Clean the threads; fit new gaskets. Assemble without skewed rubbers; tighten by hand + a little key. Run water; check all joints. Check the water seal — if it smells: smells. Siphons · Gaskets.
How-to 03/11/2026 INVENTĀRS
How to stop smells from the siphon
Smell from a basin/shower is rarely “cured” with scented tablets. Diagnosis first. Siphon choice: guide. SymptomMost common causeWhat to do Smell after a long absenceDry water sealPour water in; for rarely used places — regularly Smell + moisture in the cabinetLeak at a jointCheck gaskets; replacement Smell + slow drainBlockageCleaning; then new siphon if the body is warped: Viega, Wirquin Smell from the showerDry/damaged shower siphonViega shower siphon If the seal holds but smell remains — check ventilation/stack (tradesperson). Siphons · drainage.
Buying advice 03/11/2026 INVENTĀRS
How to choose a water filter for the home
A water filter at home is not an “extra accessory”. Grit and rust from the network kill mixer cartridges, clog aerators and damage boiler elements. This guide helps you choose water filtration by the problem — not by the biggest box. Related: plumbing guide, mixer cartridge. Start with the symptom What you seeWhat you usually needWhat not to start with Grit, rust, “black dots” in the aeratorMechanical housing + element (microns)An expensive “taste” station without mechanics Mixer / shower clogs quicklyFilter before the line + regular cartridge changeOnly buying a new mixer Limescale..
Comparisons 03/11/2026 INVENTĀRS
Mechanical or cartridge filter
In the shop “filter” can mean a housing, a cartridge or a kit. This page sorts the terms so you do not buy the wrong one. Basics: how to choose a water filter. Housing + element (typical home scheme) The housing (DP 10 MONO, Senior Plus, Mignon Plus) holds a replaceable element (25 mcr, 10 mcr). Plus: change only the cartridge; you can change micron grade. Minus: need space and remember service. “Cartridge” in everyday language People call that the element itself or a whole block. On the card read: are you buying a housing, an element, or a kit. A Dosal-type block for a washing machine..
Guides 03/11/2026 INVENTĀRS
What microns mean in a water filter
On a filter element card you see mcr (microns). That is “mesh” fineness. This page teaches you to use it. Basics: how to choose a filter. What the number means 25 mcr catches coarser particles than 5 mcr. Smaller number = finer filter. It does not say “removes chlorine” or “removes limescale” — only particle size in mechanics (string/fibre). ElementmcrPractical note FA Mignon 25 mcr25Coarser protection, less often “blocks” at once FA Mignon 10 mcr / FA SX 10 mcr10Finer mechanics FA Mignon 5 mcr / FA SX 5 mcr5Finer; on dirty water — more frequent change CPP SX 25 mcr / CPP SX 10 mc..