Pipe Repair Clamp Multi/Clamp Single L=400mm AISI 304

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The Georg Fischer Multi/Clamp Single L=400mm is an industrial-grade stainless steel repair clamp engineered for permanent, reliable sealing of damaged water and gas utility lines. Built with an extended 400 mm contact length, this single-band repair unit provides optimal structural support and extensive surface coverage across longitudinal cracks, corrosion pits, shear fractures, and localized impact damage. Suitable for aboveground installations as well as direct underground burial, it restores pipe integrity rapidly under active operating conditions without requiring complete network depressurization or pipe replacement.

Manufactured to rigorous industrial standards, the clamp housing, bridge plate, and tightening lugs are fabricated from high-grade AISI 304 stainless steel (with AISI 316 available on request). All welded joints are produced using automated robotic welding technology and undergo full chemical passivation in dedicated stainless steel manufacturing cells. This manufacturing discipline prevents contact corrosion and guarantees exceptional chemical resistance against aggressive soils, groundwater, and industrial environments.

Sealing performance is achieved through a vulcanized full-circle waffle-pattern elastomer gasket that delivers uniform radial compression around the entire pipe circumference. Standard configurations feature NBR sealing compliant with EN 682 for water and gas distribution across an operating temperature range of -10 degrees to +70 degrees Celsius. EPDM gaskets compliant with EN 681-1 are available for dedicated potable water networks operating between -10 degrees and +55 degrees Celsius. The interlocking waffle structure accommodates pipe ovality, surface pitting, and minor axial angular deflection.

The Multi/Clamp Single 400 mm clamp is fully compatible with all common industrial piping substrates, including ductile iron, cast iron, carbon steel, asbestos cement, and thermoplastic lines such as PEHD, PVC-U, and PP. Rated for nominal operating pressures up to PN16 (depending on nominal diameter range), it features integrated captive bolts with anti-galling thread treatment for rapid, single-operator installation with standard hand tools, minimizing excavation time and maintenance downtime.