Rendifield Grooved Couplings and Fittings
Grooved couplings and fittings are mechanical pipe-joining components designed to quickly and securely connect steel (and some plastic) piping systems. They use a groove cut or rolled into the pipe ends and a gasketed housing clamp to create a strong, flexible joint. This system has become a popular alternative to welding and flanging, offering faster installation and easier maintenance.
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Key Features
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Fast installation — reduces labour time and costs significantly compared to welding or flanging
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Flexible connections — accommodate pipe misalignment, vibration, and thermal expansion
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Easy maintenance — joints can be easily dismantled for repair or rerouting
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Robust sealing — integral rubber gaskets ensure reliable, leak-free service
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Durable materials — typically made from ductile iron with corrosion-resistant coatings (e.g., epoxy or hot-dip galvanising)
Technical Specifications
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Material: Ductile iron (ASTM A536), stainless steel options available for special applications
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Coating: Fusion-bonded epoxy or galvanised
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Gasket Materials: EPDM, NBR, or other elastomers, depending on media
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Size Range: DN25 to DN600 (1″ to 24″ and above)
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Pressure Rating: Typically up to 25 bar (depends on coupling type and pipe diameter)
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Connection Type: Grooved pipe ends (rolled or cut grooves per AWWA C606 / ISO 6182)
Applications
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Fire protection systems (sprinkler and riser networks)
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HVAC and chilled water systems
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Mining and slurry pipelines
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Industrial water, oil, and gas distribution
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Marine and offshore piping systems
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Temporary and modular piping setups
