Double Band Repair Clamp Multi/Clamp L=600mm Stainless Steel AISI 304

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The Georg Fischer Multi/Clamp Double repair clamp L=600mm provides a permanent, robust repair solution for damaged large-diameter utility, municipal, and industrial piping systems. Engineered as a heavy-duty two-part stainless steel casing, this 600 mm wide band is specifically designed to bridge extensive longitudinal cracks, large wall punctures, severe corrosion pitting, and circumferential pipe breaks. It accommodates wide outside diameter tolerances from 314 mm up to 855 mm across working pressure ratings of 3 Bar, 4 Bar, 6 Bar, and 10 Bar.

Manufactured in a certified stainless steel-only production environment to prevent contact corrosion, the Multi/Clamp Double body housing and tensioning lugs are fabricated from premium AISI 304 / A2 stainless steel (with AISI 316 available upon request). All welded components undergo advanced automated robotic welding followed by full chemical passivation, ensuring superior corrosion resistance in aggressive soils and demanding aboveground atmospheric conditions. The integrated full-circle waffle sealing gasket is supplied in standard NBR compliant with EN 682, certified for water and gas distribution across an operating temperature range of -10 degrees to +70 degrees Celsius. EPDM gaskets compliant with EN 681-1 (-10 degrees to +55 degrees Celsius) are available for dedicated potable water installations.

This two-piece double-band repair collar enables rapid emergency installation under working line pressure without requiring system depressurisation or service shutdowns. The full-circle waffle elastomer distributes radial bolt loading uniformly around the pipe circumference, ensuring a bubble-tight hydraulic seal while preventing local stress concentrations. Multi/Clamp Double is fully compatible with ductile iron, grey cast iron, carbon steel, asbestos cement, and thermoplastic piping materials including PEHD, PVC-U, and PP-H in buried utility networks and exposed plant installations.