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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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1805 products

Caleffi logo and "Hydronic Solutions" text on white background.

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

SKU #: CALE551003AC   |   MPN #: 551003AC
$102.21
$102.21 $0.00
MSRP: $144

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

Brass cylindrical air separator with 3/4" NPT connections, vent valve on top, and DISCAL Caleffi label.

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

SKU #: CALE551003A   |   MPN #: 551003A
$97.94
$97.94 $0.00
MSRP: $137

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

Brass air and dirt separator with 1-inch NPT male connections on sides and drain valve at bottom.

Caleffi 546016A DISCALDIRT Air & Dirt Separator - 1-in NPT Male

SKU #: CALE546016A   |   MPN #: 546016A
$298.57
$298.57 $0.00
MSRP: $450

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

Brass air and dirt separator with 1-1/4-inch sweat connections and drain valve at base.

Caleffi 546097A DISCALDIRT Air & Dirt Separator - 1-1/4-in Sweat

SKU #: CALE546097A   |   MPN #: 546097A
$337.05
$337.05 $0.00
MSRP: $512

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

Brass air and dirt separator with 1-inch sweat male connections and drain valve at bottom.

Caleffi 546096A DISCALDIRT Air & Dirt Separator - 1-in Sweat Male

SKU #: CALE546096A   |   MPN #: 546096A
$285.54
$285.54 $0.00
MSRP: $429

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

Brass cylindrical separator with side inlet ports, blue CALEFFI label, black base section, and drain valve with attached cabl

Caleffi 546166A DISCAL DIRTMAG Air & Dirt Separator with Magnet - 1-in Press

SKU #: CALE546166A   |   MPN #: 546166A
$416.95
$416.95 $0.00
MSRP: $582

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

Brass air and dirt separator with blue Caleffi label, side ports, black base section, and attached drain valve.

Caleffi 546167A DISCAL DIRTMAG Air & Dirt Separator with Magnet - 1-1/4-in Press

SKU #: CALE546167A   |   MPN #: 546167A
$520.60
$520.60 $0.00
MSRP: $734

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

Brass cylindrical separator with blue Caleffi label, side ports, and black magnetic base with drain valve.

Caleffi 546196A DISCAL DIRTMAG Air & Dirt Separator with Magnet - 1-in Sweat

SKU #: CALE546196A   |   MPN #: 546196A
$390.58
$390.58 $0.00
MSRP: $543

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

Caleffi Discal Dirtmag air and dirt separator with magnet, 1-1/4-inch sweat connection, cylindrical brass body with green bra

Caleffi 546197A DISCAL DIRTMAG Air & Dirt Separator with Magnet - 1-1/4-in Sweat

SKU #: CALE546197A   |   MPN #: 546197A
$461.77
$461.77 $0.00
MSRP: $647

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

Brass cylindrical separator with side ports, blue Caleffi label, black base section, and attached drain valve with cord.

Caleffi 546116A DISCAL DIRTMAG Air & Dirt Separator with Magnet - 1-in NPT

SKU #: CALE546116A   |   MPN #: 546116A
$401.20
$401.20 $0.00
MSRP: $567

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

Brass sweat union with copper connections and white motorized actuator head on top.

Caleffi 676769A 1" sweat union TwisTop+ assy

SKU #: CALE676769A   |   MPN #: 676769A
$217.63
$217.63 $0.00
MSRP: $288

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

Brass pressure relief valve with 1/2" sweat connections, black and white adjustment cap, and attached round pressure gauge wi

Caleffi 535941HA PressCal PRV ASSE 1003, 1/2" Sweat w/ Pressure Gauge

SKU #: CALE535941HA   |   MPN #: 535941HA
$118.56
$118.56 $0.00
MSRP: $147

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

Brass pressure relief valve with black and white regulator body and attached round pressure gauge dial.

Caleffi 535551HA PressCal PRV ASSE 1003, 3/4" PEX Expansion w/ Pressure Gauge

SKU #: CALE535551HA   |   MPN #: 535551HA
$129.95
$129.95 $0.00
MSRP: $161

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

Caleffi logo and "Hydronic Solutions" text on white background.

Caleffi 644269A 2-Way, 1' SWT, 24V, 13 Cv Motorized Ball

SKU #: CALE644269A   |   MPN #: 644269A
$308.42
$308.42 $0.00
MSRP: $411

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

Brass 3-way mixing valve with integrated thermometer and black adjustment knob, 1/2" press union connections.

Caleffi 520416A AngleMix 3-Way Mixing valve 1/2" press union

SKU #: CALE520416A   |   MPN #: 520416A
$228.73
$228.73 $0.00
MSRP: $297

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

Brass pressure independent balancing valve with blue FlowCal band and sweat connections on both ends.

Caleffi 127359AF 6G0 FlowCal PIBV Low Lead 3/4" Sweat 6 GPM

SKU #: CALE127359AF6G0   |   MPN #: 127359AF 6G0
$116.94
$116.94 $0.00
MSRP: $135

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

Brass air separator with threaded cap, two side ports, and DISCAL Caleffi label.

Caleffi 551069A DISCAL Air Separator 2" Press

SKU #: CALE551069A   |   MPN #: 551069A
$396.63
$396.63 $0.00
MSRP: $610

Available in stock

Brass air separator with rotating collar, small vent valve on top, and copper connection ports, labeled DISCAL CALEFFI.

Caleffi 551706A DISCAL Rotating Collar Air Separator 1"MNPT Union

SKU #: CALE551706A   |   MPN #: 551706A
$235.72
$235.72 $0.00
MSRP: $347

Available in stock

Brass 2-way zone valve with white and black actuator head and copper connection ports.

Caleffi Z55P Z-One 2-Way,NC TERMINAL Block, w/ MS,24V,3/4",Union Press,7.5Cv

SKU #: CALEZ55P   |   MPN #: Z55P
$217.42
$217.42 $0.00
MSRP: $284

Available in stock

Brass check valve with 3/4" female NPT connections and serviceable cartridge design.

Caleffi NA51253 Serviceable low lead check 3/4" FNPT

SKU #: CALENA51253   |   MPN #: NA51253
$96.47
$96.47 $0.00
MSRP: $114

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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