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Extreme Temperature Flexible Conduit

Featured Product from Electri-Flex Company

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Most electrical wiring and conduits operate within a “comfortable” range of operating temperatures, but there are also many others that experience either extremely low or high temperatures or both. All of these cases require conduits specially designed to deliver their rated performance, including flexibility and protection, under conditions beyond those of standard types.

The number and types of applications that require these conduits are diverse, ranging from chemical production, to offshore drilling platforms, pipelines, steel production, robotics, refrigeration, and aerospace. For example, offshore oil platforms and wind turbines, wireless communications towers, weather stations, and defense systems, can experience temperatures ranging from -40o F to more than 120o F.

In steel production, very high temperatures are routine in foundries, forges, rolling mills, and arc furnaces, and, in the food and pharmaceutical industries, low temperatures are encountered in all refrigeration systems and those using liquid nitrogen for flash freezing reduce temperatures much further.

Fortunately, there are solutions to all these challenges, but it’s essential that the proper type of conduit be chosen to address the characteristic of specific situations. Electri-Flex offers conduits tailored to serving extreme temperature ranges while also withstanding rugged environments, contact with or immersion in oils, chemicals, and other aggressive substances, or even exposure to fire.

Flexible Steel Conduit

AT: Non-UL conduit that has a special PVC jacket that remains flexible at very low temperatures and has slow aging characteristics at elevated temperatures. Temperature range is -55° C to +105° C, with short-term spikes to +120° C.

ATLA: Designed for extreme hot or cold environments, uses a PVC jacket that remains flexible at low temperatures, and resists aging at elevated temperatures. It is UL and CSA approved, sunlight resistant and accommodates temperatures of -55° C to +105° C dry, 60° C wet, and 70° C in oil.

ATX: Has a thermoplastic rubber jacket that is virtually unaffected by temperature extremes and is rated for low-smoke zero halogen (LSZH) conditions with a flammability rating of UL 94-HB. Temperature range is -60° C to +150° C with spikes to +165°C

The above listed flexible steel conduits are also available with a stainless-steel core (ATSS and ATXSS).

Non-metallic Flexible Conduit

NMHT: Designed for high-temperature environments and contains rigid PVC spiral reinforcement within the wall of the conduit. Temperature range is -20° C to +105° C dry, 60° C wet, and 70° C in oil. It is also UL and CSA approved.

LNMP: Well suited for continuous flexing situations and often specified for use in power track or cable carrier installations and on industrial robots. It does not contain a metal core that could fatigue from repeated flexing or vibration but rather a seamless inner core of flexible PVC bonded to another layer of flexible PVC, between which is a woven nylon mesh for added reinforcement. The PVC is flame-retardant and resists oils, mild acids, and exposure to sunlight. Temperature range is -55° C to +105° C and is also UL and cUL approved.

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https://www.electriflex.com/wp-content/uploads/2017/07/Low-Smoke-Zero-Halogen-Conduit.pdf ;