Working Pressure

As stipulated in ISO 10508, the lifetime of Polybutene-1 (PB-1) pipe is 50 years and longer, according to permissible working pressure/temperature, as shown below:

Pipe Pressure / Temperature Rating for Polybutene-1 PN 16 (Working Pressures)

Temperature Pressure
ºC kPa P.S.I. Bar
20 1600 232 16.0
40 1370 198 13.7
60 1050 152 10.5
70 880 128 8.8
80 740 108 7.4
95 490 72 4.9

* Note: Buteline PB-1 pipe has a maximum long term operating temperature of 80ºC.

PB-1 pipe is not recommended for applications where the continuous operating temperature may exceed this limit.

Buteline will not guarantee its PB-1 pipe and fitting system where long term operating may exceed 80ºC.

Buteline recommends that an expansion valve be incorporated in all high pressure hot water systems.

This website uses cookies to optimise your experience.
By continuing to use our website you are agreeing to our Privacy Policy and Cookie Policy.
Accept and close this alert or Read Privacy Policy