Expansion joints, multi-ply bellows, braided metal hose, and exhaust manifold systems for high-temperature and critical-service piping — engineered by Hyspan and American BOA, supported locally by Sample Brothers.
Advanced flexible solutions for thermal movement, vibration isolation, and misalignment compensation in critical piping systems.
Thermal movement and equipment vibration load flanges, anchors, and nozzles harder than most systems tolerate. We help specify the right expansion joint so movement is absorbed where it should be — not pushed back into the piping.
Single, universal, hinged, gimbal, pressure-balanced, and externally pressurized designs selected around actual movement, pressure, temperature, and anchor conditions — not just pipe size. Engineered per EJMA with material certifications and pressure test records for ASME code work.
For long axial travel, rotational movement, vibration isolation, or tight equipment connections where a standard bellows doesn't fit.
Lower spring forces, better vibration damping, and longer cycle life than single-ply — which translates into less manifold cracking and more consistent turbo backpressure over time.
Thin-gauge AISI 321 stainless plies formed into corrugations on a proprietary process — measurably lower spring rate, reduced thrust loads, and longer fatigue life than single-ply at the same pressure rating.
Higher corrugation count per unit length reduces deflection forces.
Lower spring forces and anchor loads — better turbocharger backpressure.
At 65% of rated travel, life extends to 60,000 cycles per the published curve.
Inter-ply friction dampens engine-to-manifold vibration — reduces bolt stress and cracking.
Modular assemblies with integrated bellows joints for engine and compressor service — designed so sections can be replaced without disturbing the rest of the system.
Flanged bellows at every connection eliminate the exhaust leaks common with slip joints and packed glands — insulation stays intact, heat losses stay low, turbo backpressure stays consistent. Dual-shell construction lets the outer shell expand freely, preventing the thermal stress cracking that hits single-wall designs.
Combined cycle, reciprocating engine, compressor, geothermal, solar, and industrial process systems — we help identify where metal bellows, hose, slip joints, or ball joints make the most sense.
GT exhaust, HRSG inlet/outlet, steam crossover, and condenser connections — fabric and metal joints sized for high-temp duct and high-pressure steam.
Exhaust manifolds with multi-ply bellows, vibration-isolated piping, and crankcase vent flex connectors for large-bore engines.
Every joint is engineered for the specific conditions — temperature, pressure, movement, media, cycle frequency, and installation constraints — before manufacturing begins.
Hyspan, Flexial, Flexible Metal, and Universal Hose & Braid operate under one engineering umbrella — metal bellows, multi-ply exhaust joints, braided hose, fabric, rubber, and slip joints from the same organization.
All metallic bellows designed per EJMA with documented stress analysis.
U-stamp and R-stamp capabilities for code work and authorized repair.
Non-standard sizes, alloys, and movement combinations to order.
Expedited engineering and manufacturing for outage replacements.
"We do not quote expansion joints off pipe size alone."
Movement, cycle count, temperature, media, space, and anchor loads all matter. We work with your team and Hyspan engineering to confirm the right configuration before anything ships — better fit, longer service life, and direct coordination for custom work or expedited outage replacements.
Movement and installation constraints evaluated before recommending a joint type or size.
Custom sizes, alloys, and unusual movement combinations worked directly with Hyspan engineering.
Expedited engineering and manufacturing coordinated with Hyspan to minimize downtime.
Metal bellows, multi-ply exhaust joints, braided hose, fabric, rubber, and slip joints — one point of contact.
