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Caleffi 638084A 103 : Motorized Ball Valve 2-Way 1-1/2" NPT 24V

Caleffi 638084A 103 : Motorized Ball Valve 2-Way 1-1/2" NPT 24V

Caleffi

MSRP: $1,111.00
Your Price:  $743.81
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SKU:
638084A 103
UPC:
8016615704501
Condition:
New
Availability:
Ships in 1 Week
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Connection1-1/2" NPT
Configuration2-Way
Flow Coefficient89 Cv
Max Pressure230 psi
Warranty2-Year Limited

The Caleffi 638084A 103 is a 2-Way High-Flow motorized ball zone valve with 1-1/2" NPT connections, 24V.

Best for zones needing low pressure drop and positive shutoff, including larger branches and snowmelt loops.

Specifications transcribed from Caleffi technical brochure 01196/24 NA. Last verified August 2026.

Warranty

Caleffi 2-Year Limited Warranty. Caleffi North America warrants this product free from defects in material and workmanship for two years from the date of transfer of ownership - the point Caleffi hands the goods to the first carrier - subject to correct installation and use. Coverage runs to the purchaser identified as "Ship To" on Caleffi's order confirmation and is subject to the eligibility conditions, exclusions and remedies set out in Caleffi North America's published Limited Warranty and Terms and Conditions of Sale. This summary is provided for convenience and does not replace those documents.

Key Features

Full-Port Ball Design

A ball closure gives a full-port, low-pressure-drop design when open and tight shutoff when closed, unlike a characterized globe seat.

Motorized Actuation

A synchronous motor drives the ball open and closed on a thermostat signal, with an auxiliary end switch available for pump or boiler interlock.

Auxiliary End Switch

An auxiliary microswitch rated 6 A at 24 V confirms valve position for pump or boiler interlock.

Glycol Compatible

Rated for glycol solutions to 50 %, covering freeze-protected circuits.

Technical Specifications

Product TypeMotorized Ball Zone Valve
Connection Size1-1/2"
Connection TypeNPT
Configuration2-Way
Flow Coefficient (Cv)89
Maximum differential pressure75 psi
Maximum operating pressure230 psi
Medium temperature range14 - 230 °F
Ambient temperature range14 - 230 °F
Protection classIP 65
Auxiliary microswitch contact rating (24 V)6 A
Maximum glycol %50 %
Mediumwater, glycol solutions
Series2-Way High-Flow
Published weight (Caleffi "Wt.")12.0 lb

Documentation

PDF
PDF
PDF
PDF

Related Products

Frequently Asked Questions

What does Caleffi 638084A 103 do?

It is a motorized ball zone valve. A motor drives a full-port ball open and closed on a thermostat call, giving very low pressure drop when open and tight shutoff when closed.

How is Caleffi 638084A 103 different from a thermo-electric zone valve?

A ball valve gives a full-port, low-pressure-drop path and positive shutoff, and suits larger zones. A thermo-electric valve is smaller and silent but has a characterized seat with higher pressure drop.

What connection does Caleffi 638084A 103 use?

It is supplied with 1-1/2" NPT connections. Other sizes and connection styles in the range are listed under Related Products.

Caleffi 2-Year Limited Warranty. Caleffi North America warrants this product to be free from defects in material and workmanship for two years from the date of transfer of ownership (when the goods are handed to the first carrier), when installed and operated in accordance with published instructions. Coverage runs to the purchaser identified as "Ship To" on Caleffi's order confirmation and is subject to the eligibility conditions, exclusions and remedies set out in Caleffi North America's published Limited Warranty and Terms and Conditions of Sale. This summary is provided for convenience and does not replace those documents. ZOT Supply is an authorized Caleffi distributor.
Product Type:
Motorized Ball Zone Valve
Product Family:
Motorized Ball Zone Valves
Series:
2-Way High-Flow
Connection Type:
NPT
Connection Size:
1-1/2 inch
Configuration:
2-Way
Flow Coefficient:
89 Cv
Max Operating Pressure:
230 psi
Medium Temperature Range:
14 - 230 deg F
Max Differential Pressure:
75 psi
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