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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 Hydronic Solutions logo in green text on white background.

Caleffi 688003A Manifold Gage 50mm 210 F

SKU #: CALE688003A   |   MPN #: 688003A
$43.58
$43.58 $0.00
MSRP: $48

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

Brass PEX fitting with hexagonal nut and compression collar on white background.

Caleffi 680503A Fitting 3/8" Nominal PEX

SKU #: CALE680503A   |   MPN #: 680503A
$16.61
$16.61 $0.00
MSRP: $16.61

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

Chrome-finished brass and nickel plumbing fitting with 3/4" connection and gold-colored threaded male end.

Caleffi 681524 SELF-ADJ.DIAM.DARCAL FITTING 3/4" 11,5

SKU #: CALE681524   |   MPN #: 681524
$16.91
$16.91 $0.00
MSRP: $16.91

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

Brass PEX fitting components showing compression nut, blue collar insert, and connector pieces disassembled.

Caleffi 680504A Fitting 1/2" Nominal PEX

SKU #: CALE680504A   |   MPN #: 680504A
$16.61
$16.61 $0.00
MSRP: $16.61

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

Brass PEX fitting with hexagonal nut and copper insert on angled view.

Caleffi 680507 Fitting 5/16" Nominal PEX

SKU #: CALE680507   |   MPN #: 680507
$16.61
$16.61 $0.00
MSRP: $16.61

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

Brass PEX fitting components including hex nut, blue ferrule, and ring with black seals for 5/8" tubing connection.

Caleffi 680555A Fitting 5/8" Nominal PEX

SKU #: CALE680555A   |   MPN #: 680555A
$16.61
$16.61 $0.00
MSRP: $16.61

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

Chrome-plated PEX fitting with chrome nut and brass connector insert for 5/8" tubing.

Caleffi 681555 5/8" PEX Fitting w/Chrome Nut

SKU #: CALE681555   |   MPN #: 681555
$16.76
$16.76 $0.00
MSRP: $16.76

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

Chrome plumbing fitting with brass interior port and black rubber seal ring.

Caleffi 681503A 3/8" Nominal PEX Fitting w/Chrome Nut

SKU #: CALE681503A   |   MPN #: 681503A
$16.91
$16.91 $0.00
MSRP: $16.91

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

Brass air vent with textured cap, cylindrical body, and threaded base connection.

Caleffi 59829 Discal Air Vent for Brass Body (3/4"-2")

SKU #: CALE59829   |   MPN #: 59829
$104.57
$104.57 $0.00
MSRP: $150

Available in stock

Caleffi Hydronic Solutions company logo in green with circular icon and text.

Caleffi ZVR104 Z-One 4 Zone zone valve Control

SKU #: CALEZVR104   |   MPN #: ZVR104
$206.84
$206.84 $0.00
MSRP: $260

Available in stock

Brass air vent cartridge with knurled cap and stem, designed for 551 and NA551 expansion tanks.

Caleffi 59756 Air vent for 551, NA551

SKU #: CALE59756   |   MPN #: 59756
$137.89
$137.89 $0.00
MSRP: $164

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

Brass male union tail fitting with 1 inch NPT threads and hexagonal nut.

Caleffi 59817A Male UnionTail 1" NPT - Nut+Fitting

SKU #: CALE59817A   |   MPN #: 59817A
$36.82
$36.82 $0.00
MSRP: $39

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

Gray metal wall bracket with two curved mounting arms, two screws, two anchors, and two washers included.

Caleffi 165001 WALL BRACKET FOR 165-166-167 SERIES

SKU #: CALE165001   |   MPN #: 165001
$67.12
$67.12 $0.00
MSRP: $75.80

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

Brass discharge air gap assembly with multiple outlet ports and black valve handles on cylindrical base.

Caleffi 39623 Discharge air gap for 574050A

SKU #: CALE39623   |   MPN #: 39623
$57.84
$57.84 $0.00
MSRP: $70.50

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

Silver metal safety relief valve with yellow cap and side outlet connection marked with specifications.

Caleffi 253040 Solar Safety Relief Valve 10 Bar 145 PSI

SKU #: CALE253040   |   MPN #: 253040
$63.84
$63.84 $0.00
MSRP: $74.60

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

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

Caleffi 502710A Automatic Air Vent 1/8 Inch NPT Brass

SKU #: CALE502710A   |   MPN #: 502710A
$25.08
$25.08 $0.00
MSRP: $26

Available in stock

Brass automatic air vent valve with 3/8" connection and adjustment screw on top.

Caleffi 502630 ROBOCAL Automatic Air Vent 3/8"

SKU #: CALE502630   |   MPN #: 502630
$26.75
$26.75 $0.00
MSRP: $26.75

Available in stock

Brass air vent valve with black hygroscopic cap and male threaded connection.

Caleffi 502113A Minical 1/8" with Check, hygroscopic cap

SKU #: CALE502113A   |   MPN #: 502113A
$28.33
$28.33 $0.00
MSRP: $32.40

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

Gray Caleffi Z-One Relay switching control unit with terminal block on right side and manufacturer labeling on front face.

Caleffi ZVR103 Z-One Relay Series - 3 Zone Valve Switching Relay

SKU #: CALEZVR103   |   MPN #: ZVR103
$177.19
$177.19 $0.00
MSRP: $219

Available in stock

Gray Caleffi Z-One Relay switching module with labeled front panel and terminal connectors on right side.

Caleffi ZVR106 Z-One Relay Series - 6 Zone Valve Switching Relay

SKU #: CALEZVR106   |   MPN #: ZVR106
$266.13
$266.13 $0.00
MSRP: $338

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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