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Refined By

Brand
Caleffi

Model

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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)
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  • 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 304040A Vacuum Relief Valve, 1/2" MNPT

Caleffi
  • Mfr Part # 304040A
  • Parts Town # CALE304040A
  • Quantity8

In Stock, Ships today

Caleffi 304050A Vacuum Relief Valve, 3/4" MNPT

Caleffi
  • Mfr Part # 304050A
  • Parts Town # CALE304050A
  • Quantity3

In Stock, Ships today

Caleffi 502015A Air Vent, Automatic, 1/8" Outside NPT, MiniCal

Caleffi
  • Mfr Part # 502015A
  • Parts Town # CALE502015A
  • Quantity16

In Stock, Ships today

Caleffi 502040A Air Vent, Automatic, 1/2" Outside NPT, MiniCal

Caleffi
  • Mfr Part # 502040A
  • Parts Town # CALE502040A
  • Quantity1

In Stock, Ships today

Caleffi 502043A Air Vent with Hygroscopic Cap, Automatic 1/2" Outside NPT, MiniCal

Caleffi
  • Mfr Part # 502043A
  • Parts Town # CALE502043A
  • Quantity8

In Stock, Ships today

Caleffi 502115A Air Vent with Check Valve, Automatic, 1/8" Outside NPT, MiniCal

Caleffi
  • Mfr Part # 502115A
  • Parts Town # CALE502115A
  • Quantity10

In Stock, Ships today

Caleffi 502243A Air Vent with Hygroscopic Cap, Automatic 1/2" Outside NPT, ValCal

Caleffi
  • Mfr Part # 502243A
  • Parts Town # CALE502243A
  • Quantity9

In Stock, Ships today

Caleffi 502343A Air Vent with Check Valve & Hygroscopic Cap, Automatic 1/2" Outside NPT, ValCal

Caleffi
  • Mfr Part # 502343A
  • Parts Town # CALE502343A
  • Quantity1

In Stock, Ships today

Caleffi 502610A Air Vent, Automatic, 1/8" Outside NPT, RoboCal

Caleffi
  • Mfr Part # 502610A
  • Parts Town # CALE502610A
  • Quantity20

In Stock, Ships today

Caleffi 502620A Air Vent, Automatic, 1/4" Outside NPT, RoboCal

Caleffi
  • Mfr Part # 502620A
  • Parts Town # CALE502620A
  • Quantity4

In Stock, Ships today

Caleffi 502710A Air Vent with Check Valve, Automatic, 1/8" Outside NPT, RoboCal

Caleffi
  • Mfr Part # 502710A
  • Parts Town # CALE502710A
  • Quantity20

In Stock, Ships today

Caleffi 508013A Hygroscopic Air Vent, Automatic/Manual, 1/8" Outside NPT, HygroCal

Caleffi
  • Mfr Part # 508013A
  • Parts Town # CALE508013A
  • Quantity20

In Stock, Ships today

Caleffi 520516A Thermostatic Mixing Valve Kit with Temperature Gauge, Angled, 3-Way, 3/4", AngleMix

Caleffi
  • Mfr Part # 520516A
  • Parts Town # CALE520516A
  • Quantity10

In Stock, Ships today

Caleffi 520516AC Thermostatic Mixing Valve Kit with Temperature Gauge & Inlet Checks, Angled, 3-Way, 3/4", AngleMix

Caleffi
  • Mfr Part # 520516AC
  • Parts Town # CALE520516AC
  • Quantity1

In Stock, Ships today

Caleffi 521201AP Thermostatic Mixing Valve Kit, 4-Way, Anti-Scald, Adjustable, 3/8", SinkMixer

Caleffi
  • Mfr Part # 521201AP
  • Parts Town # CALE521201AP
  • Quantity16

In Stock, Ships today

Caleffi 521416A Thermostatic Mixing Valve with Temperature Gauge, 3-Way, Adjustable, 1/2", MixCal

Caleffi
  • Mfr Part # 521416A
  • Parts Town # CALE521416A
  • Quantity2

In Stock, Ships today

Caleffi 521500A Thermostatic Mixing Valve, 3-Way, Adjustable, 3/4" Outside NPT, MixCal

Caleffi
  • Mfr Part # 521500A
  • Parts Town # CALE521500A
  • Quantity1

In Stock, Ships today

Caleffi 521509A Thermostatic Mixing Valve Kit, 3-Way, Adjustable, 3/4" Sweat, MixCal

Caleffi
  • Mfr Part # 521509A
  • Parts Town # CALE521509A
  • Quantity2

In Stock, Ships today

Caleffi 521516A Thermostatic Mixing Valve with Temperature Gauge, 3-Way, Adjustable, 3/4 Press", MixCal

Caleffi
  • Mfr Part # 521516A
  • Parts Town # CALE521516A
  • Quantity16

In Stock, Ships today

Caleffi 521516AC Thermostatic Mixing Valve with Temperature Gauge & Inlet Checks, 3-Way, Adjustable, 3/4 Press", MixCal

Caleffi
  • Mfr Part # 521516AC
  • Parts Town # CALE521516AC
  • Quantity10

In Stock, Ships today

Caleffi 521519A Thermostatic Mixing Valve with Temperature Gauge, 3-Way, Adjustable, 3/4" Sweat, MixCal

Caleffi
  • Mfr Part # 521519A
  • Parts Town # CALE521519A
  • Quantity10

In Stock, Ships today

Caleffi 521519AC Thermostatic Mixing Valve with Temperature Gauge & Inlet Checks, 3-Way, Adjustable, 3/4" Sweat, MixCal

Caleffi
  • Mfr Part # 521519AC
  • Parts Town # CALE521519AC
  • Quantity2

In Stock, Ships today

Caleffi 521616A Thermostatic Mixing Valve with Temperature Gauge, 3-Way, Adjustable, 1" Press, MixCal

Caleffi
  • Mfr Part # 521616A
  • Parts Town # CALE521616A
  • Quantity2

In Stock, Ships today

Caleffi 535351HA Pressure Reducing Valve with Pressure Gauge, Adjustable-Preset 45PSI, 3/4" FNPT Union, 12.5GPM Max, PresCal

Caleffi
  • Mfr Part # 535351HA
  • Parts Town # CALE535351HA
  • Quantity16

In Stock, Ships today

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