Frequently asked questions about the Internal sewerage category
What is Internal sewerage and what parts does it include?
Internal sewerage — is a system of plastic sewer pipes, tees, elbows and couplings for removing wastewater inside buildings; includes pipes like 50x1000 and 75x250, 45° and 88.5° elbows, couplings and end caps (32 mm, 40 mm). Components connect via socket (muhv) joints matched by diameter.
What pipe diameters are available in Internal sewerage?
Common diameters offered are 32 mm, 40 mm, 50 mm, 75 mm and 110 mm — e.g. pipes 50x1000, 75x250 and reducers 110x50. Choose diameter based on the fixture (sink, toilet, soil stack).
How does a socket (muhv) tee differ from a standard tee and when to choose it?
A socket (muhv) tee uses socket joints for quick assembly without glue; standard tees may require sealing. Choose a socket tee (e.g. 110x110x88° or 110x110x88.5°) when you need fast, removable installation compatible with socket pipes.
What elbow angles are available and how to choose between 45° and 88.5°?
Available angles include 45° and 88.5° (also 88°); 45° gives smoother flow and fewer blockages, while 88.5° is used for sharp, space-saving turns (e.g. 50x88.5° or 110x110x88°). Choose based on space constraints and flow requirements.
How to choose a 110x50 eccentric reducer and when is it needed?
A 110x50 eccentric reducer is used to join a 110 mm soil stack to a 50 mm branch while offsetting the axis. Choose an eccentric 110x50 reducer when you need to avoid saddle offset and route a smooth connection in tight spaces.
When to use 32 mm and 40 mm end caps in internal sewerage?
32 mm and 40 mm end caps are used to temporarily or permanently seal branches and for pressure/testing. Use 32 mm on smaller branches and 40 mm for standard outlets—both sizes are listed in the category (180471, 180472).
What MÜRASUMMUTAV sound-damping components are available and why use them?
The range includes sound-damping items like MÜRASUMMUTAV reducers and double couplings (e.g. 110x50, double coupling 50) and MÜRASUMMUTAV pipes 50x500. They reduce vibration and water noise in soil stacks and horizontal runs.
How to choose between 50x1000 and 50x500 sewer pipe?
Choose 50x1000 for longer straight runs to reduce joints; 50x500 is better for navigating obstacles and frequent fittings. Both use MUHVIGA socket connections and are available in MÜRASUMMUTAV sound-damping versions.
Are the fittings compatible with 32/40 mm vacuum valves?
Yes. The category includes VAAKUMVENTIIL VÄIKE 32/40MM and matching 32/40 mm couplings and tees, so fittings of those diameters are compatible with vacuum valves.
What is the difference between grey (HALL) and white (VALGE MUHVIGA) pipes and which to choose for a bathroom?
White VALGE MUHVIGA pipes are cleaner-looking for visible installations, grey HALL pipes suit technical areas. For a bathroom, choose white MUHVIGA (e.g. 50x250 or 50x500) when pipes may be visible.