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The DIXON VALVE COUPLING 550 is a double bolt hose clamp constructed from plated iron, designed to secure hose connections in industrial and trade plumbing applications. It accommodates hose outside diameters from 4.5 inches to 5.03 inches, making it suitable for larger-diameter hose assemblies. The double bolt design distributes clamping force evenly around the hose circumference, reducing the risk of slippage or hose deformation under pressure. Plumbers, pipefitters, and industrial maintenance technicians install this clamp where a dependable, high-grip connection is required on heavy-duty hose runs.
This clamp is well suited for use in commercial and industrial plumbing systems where larger hose diameters are common. Typical applications include coupling rubber or flexible hoses to rigid fittings, flanged connections, or pipe stubs in water, air, and general fluid transfer service. The 4.5 to 5.03 inch outside diameter range targets mid-to-large hose sizes frequently encountered in contractor and facility maintenance work.
Designed as an OEM-style replacement or direct-fit clamp for large-diameter flexible hose assemblies requiring a double bolt style clamp with an outside diameter range of 4.5 to 5.03 inches.
Installation is typically performed by licensed plumbers or pipefitters. Before servicing any hose connection, shut off the fluid supply and relieve system pressure completely. Position the clamp over the hose end and onto the fitting before tightening both bolts alternately and evenly to achieve uniform seating. Follow applicable IPC or local plumbing code requirements for hose connection methods in the system being serviced.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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