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Grooved Rigid Coupling – Secure, Durable, and Efficient Pipe Connection

Grooved Rigid Coupling – Secure, Durable, and Efficient Pipe Connection
  • Grooved Rigid Coupling – Secure, Durable, and Efficient Pipe Connection
Produced by: Hebei Jianzhi Casting Group Ltd

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Understanding Grooved Rigid Couplings
The Grooved Rigid Coupling offers a high-strength, reliable pipe connection solution, ideal for applications requiring a firm, immobile joint. Unlike flexible couplings, this design virtually eliminates angular deflection, axial movement, and rotation after installation. With embedded grip teeth and robust construction, it serves as a modern alternative to traditional flanging, welding, or threading.

Key Features:

  • Size Range: 1" to 12" (DN25–DN300)

  • Working Pressure: Up to 300 PSI

  • Certifications: FM Approved, UL Certified

  • Surface Coatings: Red painted, galvanized, epoxy blue, grey

  • Gasket Options: EPDM, Nitrile (NBR), Silicone – suitable for water, oil, air, and chemical media

Structure & Working Principle:
This coupling comprises three primary components: a sealing rubber gasket, precision-machined clamp housing, and twin bolts. The gasket fits into the grooved pipe ends and is compressed by the clamp, which is locked securely by the bolts. As internal pressure increases, the sealing performance improves.

Applications:

  1. HVAC & Plumbing: Leak-proof connection in heating, ventilation, and plumbing networks

  2. Firefighting Systems: Rigid joints for fire suppression pipelines

  3. Water Treatment: Handles pressurized flow in treatment plants

  4. Oil & Gas: Strong seals for petroleum and gas transportation

  5. Chemical Plants: Resistant to chemical corrosion

  6. Marine Use: Durable in offshore and shipboard environments

Advantages:

  • Fast and easy to install

  • Reduced labor and maintenance cost

  • High-pressure resistance

  • Long-term durability and safety


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