Expansion Loops & Hose Assemblies

MADE IN THE USA

Engineered Expansion Loops & Flexible Hose Assemblies for HVAC, Mechanical & Industrial Systems

Flex-Weld designs and manufactures braided metal hose assemblies and expansion loops engineered to absorb vibration, reduce piping stress, and control movement in demanding mechanical and industrial systems. Built in the USA to meet rigorous performance standards, these products feature stainless-steel corrugated hose and multi-ply bellows construction for superior flexibility, corrosion resistance, and long service life.

From HVAC, water treatment, and fire protection systems to power generation, OEM, and chemical processing applications, Flex-Weld Expansion Loops and Hose Assemblies provide reliable, leak-free motion control that safeguards equipment and extends operational uptime. Whether you need a standard catalog connector or a custom-engineered assembly, our in-house forming, welding, and testing capabilities ensure consistent quality—ready for your next installation.

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Our Products & Solutions

High-quality industrial heat exchangers and custom metal components for manufacturing applications.

Braided Hose
Assemblies

Engineered for vibration absorption and stress relief in HVAC and industrial piping systems, Keflex™ braided hose assemblies feature annular corrugated stainless steel hose with a high-tensile wire braid for maximum flexibility, corrosion resistance, and long service life. Available in custom lengths, end fittings, and double-braid configurations for higher-pressure performance.

High-pressure industrial flexible hose connector with orange flanges for fluid transfer.

Straight Flex
Connectors UL / Fire

UL-Listed flexible connectors designed for fire sprinkler and mechanical piping systems. These stainless steel assemblies absorb vibration, misalignment, and lateral offset—protecting equipment and ensuring reliable, code-compliant operation. Available in multiple lengths and end configurations for easy installation and maintenance.

Flexible industrial piping with metal and copper components for plumbing and HVAC systems.

Expansion Loops

Keflex™ expansion loops provide a compact, maintenance-free solution for controlling thermal expansion and seismic movement in piping systems. Designed for high-pressure, ultra-clean, or corrosive environments, each loop minimizes stress, reduces anchor requirements, and simplifies installation compared to traditional bellows-type joints.

High-quality industrial pipe component with orange and metallic finish for aerospace applications.

Expansion Loops
UL / Fire

UL-Listed fire-rated expansion loops for sprinkler and mechanical systems engineered to absorb thermal growth, axial movement, and unpredictable seismic activity. Their space-saving design and simple installation make them ideal for new construction or retrofit projects requiring safety, flexibility, and proven performance.

Flexible stainless steel hydraulic hoses with brass fittings for industrial applications.

Heat Pump /
Water Hose Assemblies

Flexible, fire-rated Keflex™ water hose assemblies designed for heat pump and hydronic systems. Featuring a stainless-steel braid with an EPDM core and brass or steel fittings, these hoses provide reliable, leak-free performance for water service applications—available in standard or custom lengths from 12″ to 48″.

AEROSPACE

DEFENSE

GROUND VEHICLEs

AUTOMATION

MEDICAL

Flex-Weld keeps industry flowing—one engineered joint at a time.

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Proudly Made In USA

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