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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

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

Regular price $94.92
Sale price $94.92 Regular price $0.00
MSRP: $118

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

Regular price $1,280.81
Sale price $1,280.81 Regular price $0.00
MSRP: $1,704

Available in stock

Brass backflow preventer with 1/2" press connections and black certification label.

Caleffi 573406A Backflow Preventer 1/2" Press ASSE 1012

SKU #: CALE573406A   |   MPN #: 573406A

Regular price $116.59
Sale price $116.59 Regular price $0.00
MSRP: $145

Available in stock

Brass backflow preventer with 3/4" NPT threaded connections, black Caleffi label band, and vent outlet.

Caleffi 573503A Backflow Preventer 3/4" NPT ASSE 1012

SKU #: CALE573503A   |   MPN #: 573503A

Regular price $102.04
Sale price $102.04 Regular price $0.00
MSRP: $125

Available in stock

Brass backflow preventer assembly with multiple ports and black cylindrical base, viewed from front.

Caleffi 574006A Backflow Preventer 1" FNPT ASSE 1013

SKU #: CALE574006A   |   MPN #: 574006A

Regular price $420.23
Sale price $420.23 Regular price $0.00
MSRP: $551

Available in stock

Brass backflow preventer valve with 3/4" NPT connections and black rubber cap, ASSE 1013 certified.

Caleffi 574050A Backflow Preventer 3/4" NPT ASSE 1013

SKU #: CALE574050A   |   MPN #: 574050A

Regular price $403.80
Sale price $403.80 Regular price $0.00
MSRP: $528

Available in stock

Brass backflow preventer with 1-1/4" female ports and dual check valves on horizontal body.

Caleffi 574700A Backflow Preventer 1-1/4" FNPT ASSE 1013

SKU #: CALE574700A   |   MPN #: 574700A

Regular price $743.70
Sale price $743.70 Regular price $0.00
MSRP: $1,002

Available in stock

Metal universal key with cross-shaped head and horizontal shaft with threaded connectors on ends.

Caleffi 387127 DVL Universal Key

SKU #: CALE387127   |   MPN #: 387127

Regular price $86.91
Sale price $86.91 Regular price $0.00
MSRP: $105

Available in stock

Brass backflow preventer with 1/2" NPT connections, black valve caps, and central black base unit.

Caleffi 574004A Backflow preventer 1/2" NPT ASSE 1013

SKU #: CALE574004A   |   MPN #: 574004A

Regular price $333.11
Sale price $333.11 Regular price $0.00
MSRP: $441

Available in stock

Brass backflow preventer with 3/4" press connections and black cylindrical base, featuring multiple ports and valves.

Caleffi 574056A Backflow Preventer 3/4" Press ASSE 1013

SKU #: CALE574056A   |   MPN #: 574056A

Regular price $427.07
Sale price $427.07 Regular price $0.00
MSRP: $575

Special Order

Brass backflow preventer with 1/2 inch sweat connections and black label band.

Caleffi 573493A Backflow Preventer 1/2 Inch Sweat Brass

SKU #: CALE573493A   |   MPN #: 573493A

Regular price $95.88
Sale price $95.88 Regular price $0.00
MSRP: $116

Special Order

Brass backflow preventer with 1/2" press connection and black rubber seals.

Caleffi 574064A Backflow Preventer 1/2" Press ASSE 1013

SKU #: CALE574064A   |   MPN #: 574064A

Regular price $348.03
Sale price $348.03 Regular price $0.00
MSRP: $466

Special Order

Brass discharge air gap assembly with black valve handles and black base cap, multiple outlet ports.

Caleffi 59980 Discharge air gap for 574004A

SKU #: CALE59980   |   MPN #: 59980

Regular price $54.63
Sale price $54.63 Regular price $0.00
MSRP: $66

Special Order

Brass backflow preventer with 1/2" sweat connections and black identification band.

Caleffi 573409A Backflow Preventer 1/2" Sweat ASSE 1012

SKU #: CALE573409A   |   MPN #: 573409A

Regular price $93.74
Sale price $93.74 Regular price $0.00
MSRP: $113

Special Order

Brass backflow preventer with black cylindrical base and multiple outlet connections and valves.

Caleffi 574066A Backflow Preventer 1" press ASSE 1013

SKU #: CALE574066A   |   MPN #: 574066A

Regular price $463.05
Sale price $463.05 Regular price $0.00
MSRP: $611

Special Order

Brass manifold assembly with black valve body, multiple connection ports, pressure gauge, and flow control mechanisms.

Caleffi 574166A 1" press x 1" press

SKU #: CALE574166A   |   MPN #: 574166A

Regular price $569.89
Sale price $569.89 Regular price $0.00
MSRP: $773

Special Order

Brass backflow preventer with 1-1/4" press connections, dual check valves, and black isolation ball valves.

Caleffi 574706A Backflow Preventer 1-1/4" press ASSE 1013

SKU #: CALE574706A   |   MPN #: 574706A

Regular price $839.97
Sale price $839.97 Regular price $0.00
MSRP: $1,139

Special Order

Brass water pressure regulator assembly with black solenoid valve, gauge, and multiple threaded connections.

Caleffi 574161A 1" FNPT x 1" NPT male union

SKU #: CALE574161A   |   MPN #: 574161A

Regular price $522.06
Sale price $522.06 Regular price $0.00
MSRP: $706

Special Order

Silver metal double-ended wrench with open circles at each end and text markings on the handle.

Caleffi 387100 PEX Fitting Wrench 26mm-30mm

SKU #: CALE387100   |   MPN #: 387100

Regular price $53.46
Sale price $53.46 Regular price $0.00
MSRP: $58.30

Special Order

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

Regular price $628.71
Sale price $628.71 Regular price $0.00
MSRP: $865

Special Order

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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