Buteline Polybutene-1 pipe should be installed ensuring that any bending radius is at least 10 times the outside diameter of the pipe. Sharp bends should be made with appropriate fittings.
|Pipe Size||Minimum Bending Radius|
|12mm (O.D. 13mm) Type 15 PN16||120mm|
|15mm (O.D. 16mm) Type 18 PN16||160mm|
|20mm (O.D. 22mm) Type 22 PN16||220mm|
|25mm (O.D. 28mm) Type 28 PN16||280mm|