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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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1812 products

Brass backflow preventer with 1/2" NPT threaded connections and black label band on center body.

Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012

SKU #: CALE573403A   |   MPN #: 573403A
$92.79
$92.79 $0.00
MSRP: $115

Available in stock

Brass backflow preventer with NPT threaded ports, black valve handles, and central black actuator housing.

Caleffi 574900A Backflow Preventer 2 Inch NPT Brass

SKU #: CALE574900A   |   MPN #: 574900A
$1,245.12
$1,245.12 $0.00
MSRP: $1,654

Available in stock

Brass backflow preventer assembly with black end caps and central valve body mounted on black base.

Caleffi Repair Kit for 2" Caleffi 574 Series Backflow Preventer - NA11609

SKU #: CALENA11609   |   MPN #: NA11609
$610.87
$610.87 $0.00
MSRP: $840

Special Order. Expect 4-6 weeks for delivery, subject to change

Green hydraulic separator with brass connections, four side ports, magnetic top cap, and collection bowl at base.

Caleffi 549596A SEP4 4-in-1 Magnetic Hydraulic Separators, 1" Sweat Union

SKU #: CALE549596A   |   MPN #: 549596A
$665.51
$665.51 $0.00
MSRP: $887

Available in stock

Green cylindrical hydraulic separator with four copper sweat union connections, brass top fitting, and drain valve at bottom.

Caleffi 549597A SEP4 4-in-1 Magnetic Hydraulic Separators, 1-1/4" Sweat Union

SKU #: CALE549597A   |   MPN #: 549597A
$816.04
$816.04 $0.00
MSRP: $1,082

Available in stock

Brass thermostatic mixing valve with black adjustment cap labeled MIN-MAX, sweat connections, and dial temperature gauge show

Caleffi 521519A MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve (sweat, with temperature gauge) 3/4" Sweat

SKU #: CALE521519A   |   MPN #: 521519A
$224.45
$224.45 $0.00
MSRP: $291

Available in stock

Brass autofill valve with 1/2" NPT connections and attached pressure gauge with white dial.

Caleffi 553642A AutoFill 1/2" NPT Inlet X 1/2" NPT Outlet w/ Pressure Gauge

SKU #: CALE553642A   |   MPN #: 553642A
$133.17
$133.17 $0.00
MSRP: $168

Available in stock

Brass air separator with 1-1/4" sweat connections on sides, removable top cap, and DISCAL Caleffi label.

Caleffi 551035A DISCAL Air Separators: Brass, 1-1/4" Sweat

SKU #: CALE551035A   |   MPN #: 551035A
$200.78
$200.78 $0.00
MSRP: $306

Available in stock

Brass air separator with 1" NPT female connections on sides, top vent valve, and DISCAL Caleffi label.

Caleffi 551006A DISCAL Air Separators: Brass, 1" NPT Female

SKU #: CALE551006AC   |   MPN #: 551006AC
$158.69
$158.69 $0.00
MSRP: $229

Available in stock

Brass automatic fill valve with 1/2 inch sweat connections and gray adjustment caps on top and bottom.

Caleffi 573009A Automatic Fill 1/2 Inch Sweat Brass

SKU #: CALE573009A   |   MPN #: 573009A
$194.39
$194.39 $0.00
MSRP: $242

Available in stock

Brass automatic fill valve with 1/2 inch press connections and attached pressure gauge.

Caleffi 573016A Automatic Fill 1/2 Inch Press Brass

SKU #: CALE573016A   |   MPN #: 573016A
$240.08
$240.08 $0.00
MSRP: $306

Available in stock

Brass automatic air vent with 1/8" NPT male connection and black adjustment screw on top.

Caleffi 502610A ROBOCAL Automatic Air Vent 1/8" NPT Male

SKU #: CALE502610A   |   MPN #: 502610A
$19.52
$19.52 $0.00
MSRP: $19.52

Available in stock

Brass automatic fill valve with NPT threaded ports, gray and black top cap, and ribbed bottom adjustment knob.

Caleffi 553542A Automatic Fill 1/2 Inch NPT Brass

SKU #: CALE553542A   |   MPN #: 553542A
$121.04
$121.04 $0.00
MSRP: $151

Available in stock

Brass balancing valve with black dial adjustment knob and black electronic module, 1" NPT connections.

Caleffi 132662A QuickSetter Balancing Valve, 1" NPT

SKU #: CALE132662A   |   MPN #: 132662A
$250.48
$250.48 $0.00
MSRP: $313

Available in stock

Brass thermostatic mixing valve with black adjustment dial, three sweat connection ports, and temperature indicator dots.

Caleffi 521509A MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve (sweat, with temperature gauge) 3/4" Sweat

SKU #: CALE521509A   |   MPN #: 521509A
$191.61
$191.61 $0.00
MSRP: $247

Available in stock

Brass mixing valve with black adjustable knob, copper inlet/outlet connections, and temperature gauge dial at bottom.

Caleffi 521616A MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve, 1" Press

SKU #: CALE521616A   |   MPN #: 521616A
$272.80
$272.80 $0.00
MSRP: $358

Available in stock

Brass air separator with cylindrical body, side ports, and top vent valve labeled DISCAL CALEFFI.

Caleffi 551041A DISCAL Air Separator 1 1/2" Sweat

SKU #: CALE551041A   |   MPN #: 551041A
$265.13
$265.13 $0.00
MSRP: $398

Available in stock

Caleffi 535056A AutoFill Automatic Filling Valve (commercial applications) 3/4" Press Union

SKU #: CALE535056A   |   MPN #: 535056A
$150.92
$150.92 $0.00
MSRP: $190

Available in stock

Brass zone valve with gray and black motorized actuator head and terminal connection block on top.

Caleffi Z55 Z-One Zone Valve with Terminal Connection - 3/4" Sweat

SKU #: CALEZ55   |   MPN #: Z55
$173.16
$173.16 $0.00
MSRP: $222

Available in stock

Caleffi Z56 zone valve with gray and black actuator head mounted on brass body with sweat connections.

Caleffi Z56 Z-One Zone Valve with Terminal Connection - 1" Sweat

SKU #: CALEZ56   |   MPN #: Z56
$211.00
$211.00 $0.00
MSRP: $275

Available in stock

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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