Tees - Pumps, Valves, Piping and Fittings

Marine pipe tees are branch fittings used to divide, combine, or redirect flow in shipboard piping systems. They are supplied as equal or reducing tees in welded, threaded, flanged, compression, grooved, or socket-weld configurations.

ProShipWorks provides end-to-end support to source and supply Tees for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

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Product Information

Product Name Tees
Product Category Pumps, Valves, Piping and Fittings
Product Reference 150
Brands / Manufacturers Victaulic, Georg Fischer, Bonney Forge
Unit of Measure Piece

Key Features

Key Feature
1.   Equal and reducing branch configurations
2.   Available in carbon steel, stainless steel, copper-nickel, bronze, brass, and thermoplastic materials
3.   Suitable for welded, threaded, flanged, compression, or grooved connections
4.   Manufactured to standardized dimensions and pressure ratings
5.   Used in seawater, ballast, bilge, fire main, fuel, cooling, and utility systems

Applications of Tees

Application
1.  Shipboard seawater cooling, ballast, and fire-fighting piping
2.  Bilge, fuel oil, lubricating oil, and compressed-air systems
3.  Freshwater, HVAC, hydraulic, and general utility piping

Models & Manufacturers

Model Manufacturer
ASME B16.9 Butt-Weld Equal Tee Various approved manufacturers
ASME B16.9 Butt-Weld Reducing Tee Various approved manufacturers
ASME B16.11 Forged Socket-Weld or Threaded Tee Various approved manufacturers
Victaulic Style 920 Mechanical-T Victaulic

Technical Specifications

Model Specification Value Unit
ASME B16.9 Butt-Weld Equal Tee Nominal size range Typically DN15 to DN600 mm
ASME B16.9 Butt-Weld Equal Tee Common materials Carbon steel, stainless steel, copper-nickel —
ASME B16.11 Forged Tee Pressure class Class 3000, 6000, or 9000 Class
Victaulic Style 920 Mechanical-T Connection type Grooved mechanical branch connection —
General marine pipe tee Branch configuration Equal or reducing —

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification Common standards include ASME B16.9 for factory-made butt-weld fittings, ASME B16.11 for forged fittings, ASME B16.5 for flanged connections, ASME B16.3 for malleable iron threaded fittings, MSS SP-97 for integrally reinforced branch outlets, and ISO 9001 manufacturing quality systems.
Class Approval Class approval may be required for pressure piping and fire-main applications. Depending on the vessel and piping system, accepted societies can include DNV, ABS, Lloyd's Register, Bureau Veritas, and ClassNK. Approval is product-, material-, application-, and project-specific.

Installation, Maintenance & Safety Information

Installation Notes Verify size, material, schedule, pressure rating, branch orientation, and connection standard before installation. Align and support piping without forcing the tee into position. For welded fittings, use qualified welding procedures and inspect welds as required. Use compatible gaskets, sealants, and bolts for flanged or threaded connections.
Maintenance Tips Inspect tees and adjacent joints for corrosion, leakage, vibration, erosion, and coating damage during planned rounds. Check grooved, threaded, and flanged connections for loosening. Replace fittings showing cracking, wall thinning, severe corrosion, or deformation.
Safety Notes Isolate, depressurize, drain, and verify the piping system before removal or installation. Follow hot-work permits and gas-free requirements for welding onboard. Use materials compatible with the conveyed fluid, temperature, pressure, and marine corrosion environment.

Request a Quote for Tees

Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.

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  • ETA / vessel schedule
  • Berth or vessel location
  • Required quantity
  • Preferred delivery window
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