Description
The Viega 357252 (Model 3525) is a 50 mm threaded extension in dezincification-resistant red brass (Rotguss). It is used to extend the reach of 3/4″ valves and fittings — for example, where a valve is recessed into a wall or the pipe stub is too short. The tapered external thread (R3/4″, DIN EN 10226) seals tightly into the valve body, while the cylindrical internal thread (Rp3/4″) accepts the downstream pipe fitting. An internal square recess allows the extension to be turned with a key and trimmed to length if needed.
- Material: red brass (Rotguss), form-stable and corrosion-protected
- DVGW approved (DV 7401 AO 2957) for drinking water (DIN 1988) and gas (TRGI 2008)
- Dezincification-resistant; suitable for demanding water chemistries
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