UPP Secondary Contained Pipework


Where legislation requires, a further level of protection can be provided by using UPP secondary containment pipework. Secondary containment of the primary pipework is achieved using an outer pipe and the electrofusion process to make joints; providing a second barrier, also with no joints or leak paths. Secondary pipe is terminated or closed onto the primary pipe using terminating reducers and this is completed at each end of a pipe run before making the transition to steel on the primary pipe work. The electrofusion principles are the same for both primary and secondary systems.
Secondary containment pipework has a 5 bar pressure and -0.6 bar vacuum rating. A very high level of safety is achieved from near zero permeation, a burst pressure capability in excess of 20 bar and an operational temperature range of -40°C to +50°C. The interstitial space between primary and secondary pipe can be monitored using pressure or vacuum leak detection monitoring systems.


UPP pipework system has received a large number of approvals from worldwide authorities and environment agencies. UPP is available to EN14125:2013, UL971 and IP2 approvals - a standard of safety and quality we have maintained throughout its more than 30 year history.

• AS/NZS 2053.1.2001
• DIBt
• EN 14125:2013
• IP1
• IP2
• ISBN 0 85293 164 6
• NBR14722
• UL 971
• ULC/ORD-C971


» Co-axial sleeve pipe co-extruded over UPP Extra lined primary pipe.
• Uninterrupted interstitial space between the primary and secondary pipe.
• Leak detection system available.
• Full range of secondary containment fittings (5 bar rated).
• Pipe has passed testing to EN14125:2013, temperature class T1 from -40°C to +50°C.
• EN14125:2013 and UL971 approved .
Bar Pressure : 5 Bar
Vacuum rating : -0.6 bar
Temperature Range : -40°C ve +50°C

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