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Collection: Caleffi

Founded in 1956 in Italy, Caleffi is a global leader in hydronic heating, plumbing, and air conditioning components. From thermostatic mixing valves and pressure reducing valves to air separators and zone valves, Caleffi engineers for precision, efficiency, and reliability.

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1805 products

Caleffi 548097A Hydro Separator 1 1/4" Sweat Union

Caleffi 548097A Hydro Separator 1 1/4" Sweat Union

SKU #: CALE548097A   |   MPN #: 548097A

Regular price $539.54
Sale price $539.54 Regular price $0.00
MSRP: $734

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Caleffi 548067A Hydro Separator 1-1/4" Press Union

Caleffi 548067A Hydro Separator 1-1/4" Press Union

SKU #: CALE548067A   |   MPN #: 548067A

Regular price $634.10
Sale price $634.10 Regular price $0.00
MSRP: $876

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Caleffi 548098A Hydro Separator 1 1/2" Sweat Union

Caleffi 548098A Hydro Separator 1 1/2" Sweat Union

SKU #: CALE548098A   |   MPN #: 548098A

Regular price $695.59
Sale price $695.59 Regular price $0.00
MSRP: $961

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Caleffi 551003AC DISCAL Air Separator 3/4" NPT Compact w/ Expansion Tank Check

Caleffi 551003AC DISCAL Air Separator 3/4" NPT Compact w/ Expansion Tank Check

SKU #: CALE551003AC   |   MPN #: 551003AC

Regular price $111.38
Sale price $111.38 Regular price $0.00
MSRP: $148

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Caleffi 549566A SEP 4 4-in-1 Union 1" Press

Caleffi 549566A SEP 4 4-in-1 Union 1" Press

SKU #: CALE549566A   |   MPN #: 549566A

Regular price $718.56
Sale price $718.56 Regular price $0.00
MSRP: $1,000

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Caleffi 546328AM DirtMagPRO 1" sweat

Caleffi 546328AM DirtMagPRO 1" sweat

SKU #: CALE546328AM   |   MPN #: 546328AM

Regular price $173.24
Sale price $173.24 Regular price $0.00
MSRP: $276

Available in stock

Caleffi 551003A DISCAL Air Separator 3/4" NPT Compact

Caleffi 551003A DISCAL Air Separator 3/4" NPT Compact

SKU #: CALE551003A   |   MPN #: 551003A

Regular price $107.41
Sale price $107.41 Regular price $0.00
MSRP: $141

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Caleffi NA10615 Replacement Legiomix valve 1", 1-1/4"

Caleffi NA10615 Replacement Legiomix valve 1", 1-1/4"

SKU #: CALENA10615   |   MPN #: NA10615

Regular price $491.45
Sale price $491.45 Regular price $0.00
MSRP: $647

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Caleffi 546369AM DirtMagPRO 2" press

Caleffi 546369AM DirtMagPRO 2" press

SKU #: CALE546369AM   |   MPN #: 546369AM

Regular price $534.35
Sale price $534.35 Regular price $0.00
MSRP: $765

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Caleffi F29635 Thermo Cartridge 140 Degree F

Caleffi F29635 Thermo Cartridge 140 Degree F

SKU #: CALEF29635   |   MPN #: F29635

Regular price $40.08
Sale price $40.08 Regular price $0.00
MSRP: $40.08

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Caleffi F29636 THERMO CARTRIDGE 160 DEGREE F

Caleffi F29636 THERMO CARTRIDGE 160 DEGREE F

SKU #: CALEF29636   |   MPN #: F29636

Regular price $40.08
Sale price $40.08 Regular price $0.00
MSRP: $40.08

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Caleffi NA10313 Adapter Kit-3/4" Conic to 1/2" NPT

Caleffi NA10313 Adapter Kit-3/4" Conic to 1/2" NPT

SKU #: CALENA10313   |   MPN #: NA10313

Regular price $20.24
Sale price $20.24 Regular price $0.00
MSRP: $20.24

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Caleffi 573100A 573 replacement body

Caleffi 573100A 573 replacement body

SKU #: CALE573100A   |   MPN #: 573100A

Regular price $75.05
Sale price $75.05 Regular price $0.00
MSRP: $87.30

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Caleffi NA10498 Low Lead Gauge Adapter tin plate

Caleffi NA10498 Low Lead Gauge Adapter tin plate

SKU #: CALENA10498   |   MPN #: NA10498

Regular price $11.84
Sale price $11.84 Regular price $0.00
MSRP: $11.84

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Caleffi NA10461 Gauge adapter for 1-1/2" and 2" 5231

Caleffi NA10461 Gauge adapter for 1-1/2" and 2" 5231

SKU #: CALENA10461   |   MPN #: NA10461

Regular price $265.30
Sale price $265.30 Regular price $0.00
MSRP: $345

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Caleffi NA10404 1" Press Tailpiece for 1" Nut

Caleffi NA10404 1" Press Tailpiece for 1" Nut

SKU #: CALENA10404   |   MPN #: NA10404

Regular price $42.36
Sale price $42.36 Regular price $0.00
MSRP: $42.36

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Caleffi NA10778 Support bracket for 1", 1-1/4" union 5495, 548

Caleffi NA10778 Support bracket for 1", 1-1/4" union 5495, 548

SKU #: CALENA10778   |   MPN #: NA10778

Regular price $37.26
Sale price $37.26 Regular price $0.00
MSRP: $37.26

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Caleffi NA10797 Support bracket for 2" union 5495, 548

Caleffi NA10797 Support bracket for 2" union 5495, 548

SKU #: CALENA10797   |   MPN #: NA10797

Regular price $43.67
Sale price $43.67 Regular price $0.00
MSRP: $43.67

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Caleffi NA11304 PRV Spool, 535H (1/2") Series

Caleffi NA11304 PRV Spool, 535H (1/2") Series

SKU #: CALENA11304   |   MPN #: NA11304

Regular price $22.73
Sale price $22.73 Regular price $0.00
MSRP: $22.73

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Caleffi F39807 Float Mechanism & Cap for brass Discal

Caleffi F39807 Float Mechanism & Cap for brass Discal

SKU #: CALEF39807   |   MPN #: F39807

Regular price $56.97
Sale price $56.97 Regular price $0.00
MSRP: $75.70

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Caleffi FAQ

What is Caleffi?

Caleffi is a manufacturer of hydronic heating and plumbing components, known for high-quality valves, fittings, and system solutions designed for efficiency and reliability.

What products does Caleffi offer?

Caleffi offers mixing valves, pressure reducing valves (PRVs), pressure relief valves, air separators, zone valves, and hydronic system controls for plumbing and HVAC applications.

What is a Caleffi mixing valve used for?

Caleffi mixing valves, including thermostatic and temperature mixing valves, regulate water temperature to improve safety, comfort, and system efficiency.

What does a Caleffi pressure reducing valve do?

A Caleffi pressure reducing valve (PRV) controls incoming water pressure, protecting plumbing systems and fixtures from damage caused by high pressure.

What is a Caleffi air separator?

Caleffi air separators remove air from hydronic heating systems, improving efficiency, reducing noise, and preventing system damage.

Are Caleffi products high quality?

Caleffi products are made from premium materials and engineered for durability, offering long-lasting performance in demanding hydronic and plumbing systems.

Where are Caleffi products made?

Caleffi was founded in Italy and operates globally, with manufacturing and distribution supporting markets including Caleffi North America.

Can Caleffi products be used in residential and commercial systems?

Yes, Caleffi components are designed for residential, commercial, and industrial hydronic systems, ensuring consistent performance across applications.

Do Caleffi products help improve energy efficiency?

By regulating temperature, pressure, and air removal, Caleffi valves and components help hydronic systems operate more efficiently and reduce energy waste.

Why choose Caleffi for hydronic systems?

Caleffi stands out for precision engineering, reliable performance, and a complete range of hydronic solutions that support safe, efficient plumbing and heating systems.

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