Straight Flex Connectors UL / Fire

Flex-Weld UL-Listed Straight Flex Connectors are approved for use in fire sprinkler and life-safety piping systems. Designed to absorb vibration, correct misalignment, and compensate for lateral offset, these flexible stainless-steel connectors protect piping and mechanical equipment from stress and fatigue.

Available in multiple lengths and end-fitting configurations, UL Flexible Connectors provide ease of installation, reliable fire-rated performance, and long service life in demanding environments where safety and compliance are critical.

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Features & Benefits


UL Listed Design – Approved for use throughout fire sprinkler and life safety piping systems.
Vibration & Misalignment Compensation – Relieves stress caused by equipment movement, thermal expansion, or lateral offset.
Flexible Stainless Steel Construction – Provides durability and long service life in high-demand environments.
Multiple Length Options – Available in various lengths to meet specific offset and installation requirements.
Versatile End Fittings – Offered with multiple end configurations for easy integration into existing systems.
Maintenance-Free Performance – Reduces strain on piping and equipment while ensuring reliable, long-term operation.

Applications


– Fire sprinkler systems
– Life safety and suppression systems
– Mechanical piping installations
– HVAC and utility service lines

Markets Served


– Fire protection and building safety
– Commercial and industrial facilities
– Mechanical contracting and construction
– Municipal and institutional infrastructure

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Straight Flex Connectors UL/Fire (downloadable PDFs)


UL Listed #150 CS SCH 40 Pipe Male Thread End Pump Connector UL Listed #150 CS SCH 40 Pipe Male Thread End 24″ OAL Pump Connector
UL Listed #150 300 Series SS SCH 40 Pipe Male Thread End Pump Connector UL Listed #150 300 Series SS SCH 40 Pipe Male Thread End 24″ OAL Pump Connector
UL Listed #150 CS SCH 40 Pipe Male Thread End 18″ OAL Pump Connector UL Listed #150 CS SCH 40 Pipe Male Thread End 36″ OAL Pump Connector
UL Listed #150 300 Series SS SCH 40 Pipe Male Thread End 18″ OAL Pump Connector UL Listed #150 300 Series SS SCH 40 Pipe Male Thread End 36″ OAL Pump Connector

Need a custom flexible metal solution?

If your system requires non-standard movement, pressure, or connection configurations, Flex-Weld engineers can design and fabricate custom expansion joints, metal bellows, and flexible hose assemblies to your exact specifications. We’ll tailor materials, end fittings, ply count, and cycle life to meet your application—whether it’s HVAC, power generation, chemical processing, or aerospace.

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