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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 TwistFlow radiant manifold assembly with dual brass headers, multiple loop connections, pressure gauges, and red/blue

Caleffi 6687C5S1A TwistFlow Radiant Manifold Assembly 3 loop 1 1/4"

SKU #: CALE6687C5S1A   |   MPN #: 6687C5S1A
$591.43
$591.43 $0.00
MSRP: $737

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

Caleffi radiant manifold assembly with two brass distribution bars featuring five loops each, ball valves, gauges, and flow m

Caleffi 6687E5S1A IN TwistFlow Radiant Manifold Assembly 5 loop 1 1/4" INVERTED

SKU #: CALE6687E5S1AIN   |   MPN #: 6687E5S1A IN
$748.56
$748.56 $0.00
MSRP: $941

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

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

Caleffi 6687F5S1A TwistFlow Radiant Manifold Assembly 6 loop 1 1/4"

SKU #: CALE6687F5S1A   |   MPN #: 6687F5S1A
$826.84
$826.84 $0.00
MSRP: $1,041

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

Brass radiant manifold assembly with six loops, featuring red and blue shut-off valves, pressure gauges, and stainless steel

Caleffi 6687F5S1A IN TwistFlow Radiant Manifold Assembly 6 loop 1 1/4" INVERTED

SKU #: CALE6687F5S1AIN   |   MPN #: 6687F5S1A IN
$826.84
$826.84 $0.00
MSRP: $1,041

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

Two-tier brass radiant manifold assembly with seven loops each, isolation valves, pressure gauges, and flow controls.

Caleffi 6687G5S1A IN TwistFlow Radiant Manifold Assembly 7 loop 1 1/4" INVERTED

SKU #: CALE6687G5S1AIN   |   MPN #: 6687G5S1A IN
$906.03
$906.03 $0.00
MSRP: $1,141

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

Dual-manifold radiant heating assembly with brass bodies, ball valves, flow meters, and seven connection ports per manifold.

Caleffi 6687G5S1A TwistFlow Radiant Manifold Assembly 7 loop 1 1/4"

SKU #: CALE6687G5S1A   |   MPN #: 6687G5S1A
$906.03
$906.03 $0.00
MSRP: $1,141

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

Caleffi Hydronic Solutions logo in green on white background.

Caleffi 6687H5S1A TwistFlow Radiant Manifold Assembly 8 loop 1 1/4"

SKU #: CALE6687H5S1A   |   MPN #: 6687H5S1A
$982.64
$982.64 $0.00
MSRP: $1,244

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

Two brass radiant heating manifold assemblies with eight loops each, red and blue ball valves, pressure gauges, and silver mo

Caleffi 6687H5S1A IN TwistFlow Radiant Manifold Assembly 8 loop 1 1/4" INVERTED

SKU #: CALE6687H5S1AIN   |   MPN #: 6687H5S1A IN
$982.64
$982.64 $0.00
MSRP: $1,244

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

Caleffi Hydronic Solutions logo in green with text on white background.

Caleffi 659064 MANIFOLD HOUSING BOX:UP TO 6 OUTLET ASSY

SKU #: CALE659064   |   MPN #: 659064
$372.80
$372.80 $0.00
MSRP: $440

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

White rectangular manifold housing box with recessed top and side mounting brackets.

Caleffi 659044 Manifold Housing Box:up to 3 outlet assy

SKU #: CALE659044   |   MPN #: 659044
$339.13
$339.13 $0.00
MSRP: $403

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

White rectangular manifold housing box with flat panel door and blue corner latch.

Caleffi 659084 Manifold Housing Box:Upto 10 Outlet Assy

SKU #: CALE659084   |   MPN #: 659084
$437.42
$437.42 $0.00
MSRP: $519

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

White rectangular manifold housing box with recessed door and blue latch on lower right corner.

Caleffi 659104 Manifold Housing Box:up to13 outlet assy

SKU #: CALE659104   |   MPN #: 659104
$502.39
$502.39 $0.00
MSRP: $595

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

White rectangular manifold housing box with hinged door and blue circular latch on bottom right corner.

Caleffi 659124 Manifold Housing Box:up to17 outlet assy

SKU #: CALE659124   |   MPN #: 659124
$566.70
$566.70 $0.00
MSRP: $674

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

Caleffi brass radiant manifold assembly with dual loops, ball valves, pressure gauges, and multiple connection ports mounted

Caleffi 6686C5S1A IN TwistFlow Radiant Manifold Assembly 3 loop 1" INVERTED

SKU #: CALE6686C5S1AIN   |   MPN #: 6686C5S1A IN
$561.11
$561.11 $0.00
MSRP: $697

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

Caleffi Hydronic Solutions company logo in green text.

Caleffi 6686E5S1A TwistFlow Radiant Manifold Assembly 5 loop 1"

SKU #: CALE6686E5S1A   |   MPN #: 6686E5S1A
$715.24
$715.24 $0.00
MSRP: $897

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

Caleffi 6686C5S1A TwistFlow Radiant Manifold Assembly 3 loop 1"

SKU #: CALE6686C5S1A   |   MPN #: 6686C5S1A
$561.11
$561.11 $0.00
MSRP: $697

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

Brass radiant manifold assembly with two horizontal bars, blue and red isolation valves, eight outlet ports with white caps p

Caleffi 6686D5S1A TwistFlow Radiant Manifold Assembly 4 loop 1"

SKU #: CALE6686D5S1A   |   MPN #: 6686D5S1A
$637.90
$637.90 $0.00
MSRP: $797

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

Caleffi brass radiant heating manifold assembly with dual four-loop sections, isolation valves, flow meters, and white connec

Caleffi 6686D5S1A IN TwistFlow Radiant Manifold Assembly 4 loop 1" INVERTED

SKU #: CALE6686D5S1AIN   |   MPN #: 6686D5S1A IN
$637.90
$637.90 $0.00
MSRP: $797

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

Caleffi F0000943 Replacement flow meter 5 to 19 GPM

SKU #: CALEF0000943   |   MPN #: F0000943
$118.00
$118.00 $0.00
MSRP: $146

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

Brass PEX fitting components including nut, blue insert, and connector pieces for 3/4" tubing.

Caleffi 680505A Fitting 3/4" Nominal PEX

SKU #: CALE680505A   |   MPN #: 680505A
$16.61
$16.61 $0.00
MSRP: $16.61

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

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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