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  • Products
    Products:
    • Air and Dirt Separators and Air Vents
      Air and Dirt Separators and Air Vents:
      • 577 XF Xtra Filtration Magnetic Dirt Separators
        577 XF Xtra Filtration Magnetic Dirt Separators:
        • 577 XF
      • Air Vents
        Air Vents:
        • Accessories
        • DISCALAIR® Automatic (up to 4.5 SCFM)
        • HYGROCAL™ Radiator Air Vent
        • MAXCAL™ Automatic (up to 9.0 SCFM)
        • MINICAL® Automatic (up to 1.7 SCFM)
        • Manual
        • PLUMBVENT™ Automatic (plumbing)
        • ROBOCAL™ Automatic (up to 0.8 SCFM)
        • VALCAL™ Automatic (up to 2.5 SCFM)
      • DIRTMAG® Magnetic Dirt Separators
        DIRTMAG® Magnetic Dirt Separators:
        • Accessories
        • DIRTMAG® (ANSI Flange)
        • DIRTMAG® (Composite)
        • DIRTMAG® Pro (Brass)
      • DISCALDIRTMAG™ Air and Magnetic Dirt Separators
        DISCALDIRTMAG™ Air and Magnetic Dirt Separators:
        • Accessories
        • DISCALDIRTMAG™ (ANSI Flange)
        • DISCALDIRTMAG™ (Brass)
        • DISCALDIRTMAG™ (Union)
      • DISCALDIRT® Air and Dirt Separators
        DISCALDIRT® Air and Dirt Separators:
        • Accessories
        • DISCALDIRT® (ANSI Flange)
        • DISCALDIRT® (Brass)
      • DISCAL® Air Separators
        DISCAL® Air Separators:
        • Accessories
        • DISCAL® (ANSI Flange)
        • DISCAL® (Brass)
      • Gold Standard Kit
        Gold Standard Kit:
        • Accessories
        • Gold Standard Kit™
    • Backflow Prevention and Safety Devices
      Backflow Prevention and Safety Devices:
      • Backflow Preventers
        Backflow Preventers:
        • Dual Check (DuC)
        • Dual Check with atmospheric vent (DuC-AV)
        • Reduced Pressure Principle (RP)
      • Safety Devices
        Safety Devices:
        • Vacuum Relief Valves (VRV)
    • Balancing Valves
      Balancing Valves:
      • Dynamic
        Dynamic:
        • Accessories
        • FlowCal+™ (compact)
        • FlowCal+™ (y-body)
        • FlowCal™ (compact)
        • FlowCal™ (hydronics)
        • FlowCal™ (y-body)
      • Static (manual)
        Static (manual):
        • Accessories
        • Flo-Set™
        • QuickSetter+™
        • QuickSetter™ (hydronics)
      • Thermal
        Thermal:
        • Accessories
        • ThermoSetter™ Compact
        • ThermoSetter™ Large body
        • ThermoSetter™
    • Distribution Manifolds and Mixing Stations
      Distribution Manifolds and Mixing Stations:
      • Assemblies
        Assemblies:
        • Accessories
        • TwistFlow™
      • Temperature Mixing Units
        Temperature Mixing Units:
        • Accessories
        • HydroMixer™
      • Thermostatic Manifold Mixing Stations
        Thermostatic Manifold Mixing Stations:
        • Accessories
        • Low Temperature
    • Filling Units and Boiler Trim Kits
      Filling Units and Boiler Trim Kits:
      • Automatic Filling Units
        Automatic Filling Units:
        • Accessories
        • AutoFill™ Combo
        • AutoFill™
        • Boiler Trim Kits
      • Water Treatment
        Water Treatment:
        • Accessories
        • Filling Units
        • HYDROFLUSH™ (fill and flush cart)
    • Fittings
      Fittings:
      • AutoFill™
        AutoFill™:
        • Tail pieces, union nuts, washers
      • Backflow Preventers
        Backflow Preventers:
        • Tail pieces, union nuts, washers
      • PresCal™
        PresCal™:
        • Tail pieces, union nuts, washers
      • Separators
        Separators:
        • Tail pieces, union nuts, washers
      • Small Valves
        Small Valves:
        • 1" union Fittings
        • Tail pieces, union nuts, washers
      • Threaded
        Threaded:
        • Union nuts, nipples adapters, bushings
    • Hydraulic Separators
      Hydraulic Separators:
      • 4-in-1 SEP4™
        4-in-1 SEP4™:
        • Accessories
        • SEP4™ (ANSI Flange)
        • SEP4™ (Union)
      • Hydro Separators
        Hydro Separators:
        • Accessories
        • Hydro Separator (ANSI Flange)
        • Hydro Separators (Union)
        • HydroCal™ (ANSI Flange)
    • Mixing Valves
      Mixing Valves:
      • Electronic
        Electronic:
        • Accessories
        • LEGIOMIX® Station
        • LEGIOMIX®
      • Thermostatic (point of distribution)
        Thermostatic (point of distribution):
        • Accessories
        • AngleMix™
        • MixCal+™ (high flow)
        • MixCal™
        • PivotMixer™
        • TankMixer™ (DHW kit)
      • Thermostatic (point of use)
        Thermostatic (point of use):
        • Accessories
        • SinkMixer™
        • TubMixer™ (high flow)
        • TubMixer™ (high flow) w/ gauge
    • Pressure Reducing Valves
      Pressure Reducing Valves:
      • Diaphragm Type
        Diaphragm Type:
        • Accessories
        • PresCal™
        • Prescal™ Compact
      • Piston Type
        Piston Type:
        • PresCal™ HP
      • Two Stage PRV Kit
        Two Stage PRV Kit:
        • KIT536
    • Renewable Components and Energy Meters
      Renewable Components and Energy Meters:
      • Biomass
        Biomass:
        • Accessories
        • ThermoBloc™ (recirc and distribution units)
        • ThermoProtec™ (mixing valves)
      • Energy Meters
        Energy Meters:
        • Accessories
        • CONTECA™
      • Solar
        Solar:
        • Accessories
        • Air Vents
        • DISCAL® (air separators)
        • Mixing Valves
        • Pump Stations
        • Safety Relief Valves
    • Specialty Components and Kits
      Specialty Components and Kits:
      • Air Vents (plumbing)
        Air Vents (plumbing):
        • PLUMBVENT™
      • Check Valves
        Check Valves:
        • Accessories
        • Check Valves (serviceable)
      • Differential Pressure Bypass
        Differential Pressure Bypass:
        • Differential Pressure Bypass Valves
      • Isolation Ball Valves
        Isolation Ball Valves:
        • Accessories
        • Isolation Valves
      • Kits
        Kits:
        • Boiler Trim Kits
        • Gold Standard Kits
        • Tankless Water Heater Kits
      • Universal Flow Switch
        Universal Flow Switch:
        • Uni-Switch™
      • Y-strainers
        Y-strainers:
        • Accessories
        • Y-strainers (hydronics)
        • Y-strainers (plumbing and hydronics)
    • Thermostatic Radiator Valves
      Thermostatic Radiator Valves:
      • Connection Valves
        Connection Valves:
        • Accessories
        • Angled Version
        • Straight Version
      • Control Heads
        Control Heads:
        • Accessories
        • Control Heads (Built-in Sensor)
        • Control Heads (Remote Sensor)
      • Radiator Valve Bodies
        Radiator Valve Bodies:
        • Accessories
        • Valve Bodies (angled)
        • Valve Bodies (straight)
    • Zone Valves, Controls and Coil Kits
      Zone Valves, Controls and Coil Kits:
      • Motorized Ball Zone Valves
        Motorized Ball Zone Valves:
        • 2-way (high-flow, straight)
        • 2-way (straight)
        • 3-way (by-pass)
        • 3-way (diverting)
      • Motorized Zone Valves
        Motorized Zone Valves:
        • 2-way Bodies (straight flow)
        • 3-way Bodies (diverting flow)
        • Accessories
        • Actuators (normally closed)
        • Actuators (normally opened)
        • Z-one™ 2-way
      • Pressure Independent Control Valves (PICV)
        Pressure Independent Control Valves (PICV):
        • Accessories
        • FLOWMATIC® Express Coil Kit
        • FLOWMATIC®
      • Thermo-electric Zone Valves
        Thermo-electric Zone Valves:
        • Accessories
        • TwisTop™
      • Z-one™ Zone Controls
        Z-one™ Zone Controls:
        • Accessories
        • Pump Zone Controls
        • Valve Zone Controls
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    Education:
    • idronics™
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    • Ask Caleffi Podcast
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    Company:
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Separators
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Tail pieces, union nuts, washers
See all products of

Tail pieces, union nuts, washers

31553 FD

Tail piece for steel 548, 5495, 5461 (FNPT)

31554 FD

Tail piece for steel 548, 5495, 5461 (sweat)

NA10706

Press tail piece for steel 548, 5495, 5461

R0001452

Union nut for steel 548, 5495, 5461

R50005

Union washer for steel 548, 5495, 5461

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