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Refined By

Brand
Caleffi

Model

loading spinner

Part Category

  • Actuators(1)
  • Bearings & Bushings(1)
  • Brackets & Retainers(4)
  • Caps & Plugs(1)
  • Controls(1)
  • Filters, Screens & Driers(9)
  • Gaskets & Seals(1)
  • Gauges & Thermometers(1)
  • Handles(1)
  • Hoses, Pipes & Tubing(1)
  • Insulation(25)
  • Knobs & Dials(1)
  • Nuts, Bolts & Screws(36)
  • Panels, Covers & Lids(2)
  • Pressure Relief Controls(6)
  • Probes & Sensors(3)
  • Pumps & Motors(5)
  • Regulators(12)
  • Switches & Buttons(18)
  • Valves, Solenoids & Fittings(363)
  • Washers, Rings & Spacers(11)

Category

Plumbing Supplies (37)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

Caleffi Replacement Parts

Caleffi specializes in precision-engineered components that protect hydronic and HVAC systems from pressure imbalance and thermal stress. These parts are essential for maintaining safe operation while improving overall system efficiency.

  • Pressure relief and safety valves
  • Radiant manifolds
  • Flow switches
  • Temperature and pressure monitoring devices

Parts Town offers a wide range of real OEM Caleffi parts that are always genuine OEM and tested and approved by the equipment manufacturer. Designed for exact fit and dependable performance, these components help deliver reliability, safety, efficiency and warranty protection across demanding applications.

With the most in-stock parts on the planet, Parts Town helps minimize downtime when system issues arise. Plus, Parts Town offers same-day shipping on in-stock items until 9 PM ET Monday–Friday, making it easy to get real parts faster and keep equipment protected.

Caleffi

Caleffi Parts & Manuals

Caleffi parts from Parts Town are built to safeguard hydronic and HVAC systems where pressure balance and temperature control matter most. Our selection of real OEM Caleffi replacement parts includes critical components like air separators, balancing valves and pressure relief valves designed to protect equipment from damage. We only carry genuine OEM Caleffi parts so you can keep your system well-maintained and performing reliably day in and day out.

...
Caleffi

Caleffi Parts & Manuals

Caleffi parts from Parts Town are built to safeguard hydronic and HVAC systems where pressure balance and temperature control matter most. Our selection of real OEM Caleffi replacement parts includes critical components like air separators, balancing valves and pressure relief valves designed to protect equipment from damage. We only carry genuine OEM Caleffi parts so you can keep your system well-maintained and performing reliably day in and day out.

...

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Caleffi 304759A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE ¾" SWEAT

Caleffi
  • Mfr Part # 304759A
  • Parts Town # CALE304759A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304760A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1" MNPT

Caleffi
  • Mfr Part # 304760A
  • Parts Town # CALE304760A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304763A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1" FNPT

Caleffi
  • Mfr Part # 304763A
  • Parts Town # CALE304763A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304766A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1" PRESS

Caleffi
  • Mfr Part # 304766A
  • Parts Town # CALE304766A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304769A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1" SWEAT

Caleffi
  • Mfr Part # 304769A
  • Parts Town # CALE304769A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304770A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1¼" MNPT

Caleffi
  • Mfr Part # 304770A
  • Parts Town # CALE304770A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304773A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1-1/4" FNPT

Caleffi
  • Mfr Part # 304773A
  • Parts Town # CALE304773A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304776A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1-1/4" PRESS

Caleffi
  • Mfr Part # 304776A
  • Parts Town # CALE304776A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304779A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1¼" SWEAT

Caleffi
  • Mfr Part # 304779A
  • Parts Town # CALE304779A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304780A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1½" MNPT

Caleffi
  • Mfr Part # 304780A
  • Parts Town # CALE304780A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304786A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1½" PRESS

Caleffi
  • Mfr Part # 304786A
  • Parts Town # CALE304786A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304789A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 1½" SWEAT

Caleffi
  • Mfr Part # 304789A
  • Parts Town # CALE304789A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304790A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 2" MNPT

Caleffi
  • Mfr Part # 304790A
  • Parts Town # CALE304790A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304793A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 2" FNPT

Caleffi
  • Mfr Part # 304793A
  • Parts Town # CALE304793A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304796A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 2" PRESS

Caleffi
  • Mfr Part # 304796A
  • Parts Town # CALE304796A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304799A DUAL UNION LOW LEADSERVICEABLE CHECK VALVE 2" SWEAT

Caleffi
  • Mfr Part # 304799A
  • Parts Town # CALE304799A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304840A DUAL CHECK BACKFLOW ASSE 1024 1/2" MNPT DUAL UNION

Caleffi
  • Mfr Part # 304840A
  • Parts Town # CALE304840A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304843A DUAL CHECK BACKFLOW ASSE 1024 1/2" FNPT DUAL UNION

Caleffi
  • Mfr Part # 304843A
  • Parts Town # CALE304843A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304846A DUAL CHECK BACKFLOW ASSE 1024 1/2" PRESS DUAL UNION

Caleffi
  • Mfr Part # 304846A
  • Parts Town # CALE304846A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304847A DUAL CHECK BACKFLOW ASSE 1024 1/2" PEX CRIMP DUAL UNION

Caleffi
  • Mfr Part # 304847A
  • Parts Town # CALE304847A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304848A DUAL CHECK BACKFLOW ASSE 1024 1/2" PEX EXPANSION DUAL UNION

Caleffi
  • Mfr Part # 304848A
  • Parts Town # CALE304848A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304849A DUAL CHECK BACKFLOW ASSE 1024 1/2" SWEAT DUAL UNION

Caleffi
  • Mfr Part # 304849A
  • Parts Town # CALE304849A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304850A DUAL CHECK BACKFLOW ASSE 1024 3/4" MNPT DUAL UNION

Caleffi
  • Mfr Part # 304850A
  • Parts Town # CALE304850A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Caleffi 304853A DUAL CHECK BACKFLOW ASSE 1024 3/4" FNPT DUAL UNION

Caleffi
  • Mfr Part # 304853A
  • Parts Town # CALE304853A
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

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