Braided Metal Hose Movement Systems

Seismic V-Loops & Flexible Metal Hose Systems

Flex Pipe USA Seismic V-Loops are braided corrugated metal-hose assemblies designed for piping systems that require multi-axis flexibility. The V-Loop family remains a core part of the metal-hose catalog and is available in 2 in. and 4 in. movement classes with multiple connection styles.

2 in. movement

2 in. Seismic V-Loops

Browse threaded NPT, Class 150 flanged, grooved, weld-end, and copper-sweat V-Loop families in the 2 in. movement class.

Browse 2 in. V-Loops

4 in. movement

4 in. Seismic V-Loops

Browse threaded NPT, Class 150 flanged, grooved, weld-end, and copper-sweat V-Loop families in the 4 in. movement class.

Browse 4 in. V-Loops

All V-Loop products

Complete Seismic V-Loop Family

View the complete published braided metal-hose loop catalog across both movement classes and connection families.

Browse All V-Loops

Connection Options

Seismic V-Loop End Connections

Submit V-Loop RFQ

Threaded NPTThreaded V-Loop families for supported smaller pipe sizes; larger threaded requirements route through application review.Browse V-Loops →Class 150 FlangedFlanged V-Loops for mechanical and industrial piping where bolted Class 150 connections are required.Browse V-Loops →GroovedGrooved-end braided metal-hose V-Loops for compatible mechanical piping systems.Browse V-Loops →Weld EndWeld-end V-Loops for fabricated piping systems and welded field tie-ins.Browse V-Loops →Copper SweatCopper-sweat V-Loop families for compatible copper piping applications and validated service conditions.Browse V-Loops →

Related Metal Hose

Flexible Equipment & Hydronic Connections

Standard Metal Hose AssembliesConfigure or quote braided stainless-steel metal hose by End A × End B connection family.View connection matrix →Pump & Equipment ConnectorsFlanged braided metal-hose connectors for pumps and packaged equipment.View pump connectors →Data Center Flexible ConnectorsChilled-water and liquid-cooling metal hose for CDUs, CRAH/CRAC equipment, pumps, manifolds, and skids.Open Data Center page →Division 23 Metal Hose ResourceSpecification inputs for metal hose assemblies and V-Loop project requirements.Open resource →

Project Inputs

Seismic Data & Engineering Review

Seismic Project DataPrepare project ZIP code, coordinates, site class, risk category, and system conditions for V-Loop review.Open seismic tool →Pressure & Temperature ReviewUse validated product data to evaluate temperature effects on the applicable metal-hose construction.Open calculator →Hose Geometry ReviewReview live length, offset, and bend-radius inputs for flexible metal-hose applications.Open calculator →

V-Loop selection is application-specific.

Movement capacity, pressure, temperature, size, connection type, hose and braid construction, piping geometry, support conditions, and project seismic requirements must be validated for the selected application. Support and restraint conditions remain engineering inputs even though Flex Pipe USA is no longer merchandising anchors, guides, or compensators as separate product families.

Submit Seismic V-Loop RFQ