All measurements in millimetres, weights in grams. For the photographic representation, we use an item size both studio light. The illustrations, technical data, dimensions and designs are non-binding. We reserve the right to make changes at any time without notice. The useful dimensions are defined or shown reinforced or result from the article designation. Other dimensions are for illustrative purposes only. Please note this in case of misuse.
Description
PVC-U Long Bend 90° Made from Pipe 10 bar, Double Female Socket
Connection:
Double Female Socket
Temperature:
up to 45°C constant, temporarily up to 60°C
Operating pressure (PN):
max. 10 bar at 20°C (medium water)
Material:
PVC-U
Color:
Light grey
Important: Unlike injection-moulded fittings, these fittings are thermally formed from pipe. Dimensions and design may therefore vary slightly.
The PVC 90° long bend has the lowest resistance to flowing liquids compared to a PVC-U 90° Elbow or a PVC-U Short Bend. Every change in direction – and even every pipe – creates frictional resistance that negatively affects flow rate. When liquids pass through fittings such as elbows, turbulence occurs which slows down the fluid. If the directional change is less abrupt – when comparing Elbow to Short Bend to Long Bend – less turbulence forms, ensuring a more stable flow velocity.
Long Bend vs Short Bend vs Elbow
The PVC-U elbow is certainly the most commonly used fitting, allowing a 90° turn over a short distance. Because of its compact shape, it is also known as a knee piece. PVC elbows or PVC knee fittings are the standard components in any piping system. Two elbows installed consecutively form a semicircle – i.e. a 180° change in direction – while opposite bonding creates an S-bend. Due to its low cost, the PVC-U elbow is the best choice when flow losses are not a concern.
However, high frictional resistance slows the fluid and causes an unstable flow. In systems where a high and constant flow rate is required, PVC elbows are not the best choice, as vortex formation within the elbow significantly reduces flow speed. Where high flow rates are needed – for example, with pumps that provide a high volume but low head (e.g. pond systems) – PVC bends are the better choice.
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