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  • GROOVED FLANGE ADAPTER, ANSI 125/150, UL/FM Listed - NASCO Supply LLC
    GROOVED FLANGE ADAPTER, ANSI 125/150, UL/FM Listed
    Material: Ductile Iron Finish: non-leaded orange paint Available Sizes: 2", 2 1/2", 3", 4", 5", 6", 8", 10", 12" Connection: Flange/Groove ANSI Minimum and Maximum Pressure: 125psi to 150psi This Grooved Flange Adapter is used in fire suppression systems, thus allowing water to flow...
    From $15.03
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  • Grooved Concentric Reducer | Fire Sprinkler Systems
    GROOVED CONCENTRIC REDUCER, Sizes 1-1/4" x 1" - 10"X6", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 1-1/4" x 1", 2"x 1-1/4", 2"x 1-1/2", 2-1/2"x 1-1/4", 2-1/2"x 1-1/2", 2-1/2"x 2", 3"x 1", 3"x 1-1/4", 3"x 1-1/2", 3"x 2", 3"x 2-1/2", 4"x 1-1/4", 4"x 1-1/2", 4"x 2", 4"x 2-1/2", 4"x 3", 5"x 2",...
    From $2.49
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  • THREADED MECHANICAL TEE - NASCO Supply LLC
    THREADED MECHANICAL TEE
    Material: Ductile Iron UL Listed / FM Approved Finish: Non-leaded orange paint Available Sizes: 2"x 1", 2"x 1-1/4", 2"x 1-1/2", 2-1/2"x 1", 2-1/2"x 1-1/4", 2-1/2"x 1-1/2", 2-1/2"x 2", 3"x 1", 3"x 1-1/4", 3"x 1-1/2", 3"x 2", 4"x 1", 4"x 1-1/4", 4"x 1- 1/2", 4"x...
    From $6.36
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  • Rigid Angle Pad CouplingRigid Angle Pad Coupling
    RIGID ANGLE PAD COUPLING, 300psi, sizes 1"-12", UL/FM Listed
    Material: Ductile Iron Available Sizes: 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8", 10",12" Finish: Non-leaded orange paint Maximum Operating Pressure: 300psi Connection: Grooved/Grooved This Grooved Rigid Coupling is used in fire suppression systems, thus allowing water to flow easier and allowing...
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  • 90° SHORT RADIUS ELBOW Sizes 1’’-8’’ UL/FM Listed - 1’’ - Plumbing Fittings
    90° SHORT RADIUS ELBOW, Sizes 1"-8", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8" Connection: Grooved/Grooved Specific Fitting Shape: 90 Degrees, Short Radius for changing flow direction This 90 Degree Short Radius Elbow is used in fire suppression systems...
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  • EQUAL TEE STANDARD Sizes 1’’-8’’ UL/FM Listed - 1’’ - Fire Sprinkler Systems
    EQUAL TEE STANDARD, Sizes 1"-8", UL/FM Listed
      Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8" Connection: Grooved/Grooved/Grooved This Equal Tee Standard is used to connect three pipes of equal size for changing of flow direction. This Tee is used...
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  • GROOVED REDUCING TEE Sizes 2’’X1’’-8’’X6’’ UL/FM Listed - 2’’X1’’ - Fire Sprinkler Systems
    GROOVED REDUCING TEE, Sizes 2"X1"-8"X6", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 2"x 1", 2"x 1 1/4", 2"x 1 1/2", 2 1/2"x 1 1/4", 2 1/2"x 1 1/2", 2 1/2"x 2", 3"x 1 1/4", 3"x 1 1/2", 3"x 2", 3"x 2 1/2", 4"x 1", 4"x 1 1/2",...
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  • END CAP, UL/FM Listed - NASCO Supply LLC
    END CAP, UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Sizes:  1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8" Connection: Grooved This End Cap is used in fire suppression systems and is used to end Grooved piping systems. This groove system is reliable, easy to install...
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  • GROOVED MECHANICAL TEE
    GROOVED MECHANICAL TEE
    Material: Ductile Iron UL Listed / FM Approved Finish: Non-leaded orange paint Available Sizes: 2"x1-1/4", 2"x1-1/2", 2-1/2"x1", 4"x 2", 4"x 2-1/2", 4"x 3", 6"x 2", 6" x 2-1/2", 6"x 3", 6"x 4", 8"x 2", 8"x 2-1/2", 8"x 3" and 8"x 4". Connection: Threaded/Two bolt ...
    From $6.81
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  • SPLIT FLANGE ANSI 125/150 Sizes 2’’-12’’ UL/FM Listed - 2’’ - Fire Sprinkler Systems
    SPLIT FLANGE, ANSI 125/150, Sizes 2"-12", UL/FM Listed
    Material: Ductile Iron Available Sizes: 2", 2 1/2", 3", 4", 5", 6", 8", 10" and 12". Finish: Non-leaded orange paint. Connection: Grooved/Grooved ANSI Minimum and Maximum Pressure: 125psi/150psi This Grooved Flange Adapter is used in fire suppression systems, thus allowing water to flow easily....
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  • REDUCING FLEXIBLE COUPLING 300 PSI 1-1/2’’X1-1/4’’ - 8’’X6’’ UL/FM Listed - 1-1/2’’X1-1/4’’ - Fire Sprinkler SystemsREDUCING FLEXIBLE COUPLING, 300 PSI, 1-1/2"X1-1/4" - 8"X6", UL/FM Listed
    REDUCING FLEXIBLE COUPLING, 300 PSI, 1-1/2"X1-1/4" - 8"X6", UL/FM Listed
    Material: Ductile Iron Available Sizes:  1-1/2"x1-1/4",  1-1/2"x1",  2"x1-1/4",  2"x1-1/2",  2-1/2"x1-1/2",  2-1/2"x2",  3"x2".  3"x2-1/2",  4"x2-1/2",  4"x3",  6"x2-1/2",  6"x3",  6"x4",  8"x6"  Finish: Non-leaded orange paint Maximum Operating Pressure: 300psi Connection: Grooved/Grooved This Reducing Flexible Coupling is used in fire suppression systems, thus allowing water to flow...
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  • EQUAL TEE SHORT Sizes 1’’-6’’ UL/FM Listed - 1’’ - Fire Sprinkler Systems
    EQUAL TEE SHORT, Sizes 1"-8", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8" Connection: Grooved/Grooved/Grooved This Equal Tee Short is used to connect three pipes of equal size together for changing flow direction. This Tee is used in...
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  • CAP W/ 1’’ ECCENTRIC HOLE Sizes 3’’X1’’-8’’X1’’ UL/FM Listed - 3’’X1’’ - Fire Sprinkler Systems
    CAP W/ ECCENTRIC HOLE, Sizes 2"x1"-8"x1", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes:  2" x 1", 3" x 1", 3" x 2", 4" x 1", 4" x 2", 6" x 1", 6" x 2", 8" x 1" Connection Grooved/Threaded This Cap with Eccentric Threaded Hole is used as...
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  • 90° DRAIN ELBOW, UL/FM Listed - NASCO Supply LLC
    90° DRAIN ELBOW, UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 2"x 1", 2 1/2"x 1", 3"x 1", 4"x 1" and 6"x1" Connection: Grooved/Grooved Specific Fitting Shape: 90 Degree with attached drain This 90 Degree Drain Elbow is used in fire suppression systems thus allowing water...
    From $7.88
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  • 45° ELBOW Sizes 1-1/4’’-6’’ UL/FM Listed - 2’’ - Fire Sprinkler Systems
    45° ELBOW, Sizes 1-1/4"-12", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 6", 8", 10", 12" Specific Fitting Shape: 45° Angled Elbow for changing flow direction Connection: Grooved/Grooved This 45 Degree Elbow is used in fire suppression systems, thus allowing water...
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  • THREADED CONCENTRIC REDUCER Sizes 2’’X1’’-8’’X4’’ - 2’’X1’’ - Fire Sprinkler Systems
    THREADED CONCENTRIC REDUCER, Sizes 2"X1"-8"X4"
    UL Listed / FM Approved Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 2"x 1", 2"x 1 1/4", 2"x 1 1/2", 2 1/2"x 1", 2 1/2"x 1 1/4", 2 1/2"x 1 1/2", 2 1/2"x 2", 3"x 1", 3"x 1 1/4", 3"x 1 1/2",...
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  • GROOVED ECCENTRIC REDUCER, Sizes 4"x2" - 10"X8", UL/FM ListedGROOVED ECCENTRIC REDUCER, Sizes 4"x2" - 10"X8", UL/FM Listed
    GROOVED ECCENTRIC REDUCER, Sizes 4"x2" - 10"X8", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 4"x 2", 4"x 2-1/2", 4"x 3", 5"x 2", 5"x 2-1/2", 5"x 3", 5"x 4", 6"x 3", 6"x 4", 6"x 5", 8"x 3", 8"x 4", 10" x 8" Connection: Grooved/Grooved This Grooved Eccentric Reducer is used...
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  • FLEXIBLE COUPLING 300 PSI 1’’-10’’ UL/FM Listed - 3’’ - Fire Sprinkler Systems
    FLEXIBLE COUPLING, 300 PSI, 1"-12", UL/FM Listed
    Material: Ductile Iron Sizes Available: 1" up to 12" Finish: Non-leaded orange paint Maximum Operating Pressure: 300psi Fitting: Grooved/Grooved This Grooved Flexible Coupling is used in fire suppression systems, thus allowing water to flow easier and allowing for inflexibility in the joint. A pad...
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  • FAST QUICK COUPLING, sizes 2"-8", UL/FM Listed
    FAST QUICK COUPLING, sizes 2"-8", UL/FM Listed
    Material: Ductile Iron Available Sizes: 2", 2-1/2", 3", 4", 5", 6", 8" Finish: Non-leaded orange paint Maximum Operating Pressure: 300psi Connection: Grooved/Grooved This Grooved Fast Quick Coupling is used in fire suppression systems, thus allowing water to flow easier and allowing for inflexibility in...
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  • 90° STANDARD RADIUS ELBOW Sizes 1’’-8’’ UL/FM Listed - 1’’ - Fire Sprinkler Systems
    90° STANDARD RADIUS ELBOW, Sizes 1"-12", UL/FM Listed
    Material: Ductile Iron Finish: Non-leaded orange paint Available Sizes: 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8", 10", 12" Connection: Grooved/Grooved Specific Fitting Shape: 90 Degree, Standard Radius for changing flow direction This 90 Degree Standard Radius Elbow is used in fire...
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NASCO Supply offers a complete selection of UL/FM listed grooved pipe fittings engineered for fire suppression systems. These durable orange fittings provide fast installation, secure connections, and long-lasting reliability in sprinkler and standpipe applications.

Our inventory includes:

  • Grooved flange adapters (ANSI 125/150)

  • Grooved concentric and eccentric reducers

  • Flexible and rigid couplings (300 PSI rated)

  • 90°, 45°, 22.5°, and 11.25° elbows (short and standard radius)

  • Equal tees, reducing tees, mechanical tees, and crosses

  • End caps and eccentric hole caps

  • Specialized fittings like fast quick couplings and drain elbows

Whether you’re installing or maintaining a fire sprinkler system, NASCO Supply delivers the grooved fittings contractors trust for performance and compliance.