Flow Coefficient4.5 Cv
Configuration3-Way
Warranty2-Year Limited
The Caleffi NA644300 is a Series 644 motorized ball valve body, 3-way diverting. It is supplied without an actuator, which is ordered separately.
Best for installing the valve body at rough-in and adding actuation at commissioning.
Specifications transcribed from Caleffi technical brochure 01131/23 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
Valve Body Only, No Actuator
Supplied as Series 644 motorized ball valve body, 3-way diverting without an actuator. A Caleffi actuator is ordered separately, so the body can be installed at rough-in and actuated later.
Full-Port Ball Design
A full-port ball gives a low-pressure-drop path when open and tight shutoff when closed.
Technical Specifications
| Product Type | Valve Body |
| Configuration | 3-Way |
| Flow coefficient (Cv) | 4.5 Cv |
| Medium temperature range | 20-230 °F |
| closing delta p max. | 150 psi |
| Series | 644 Valve Body |
Documentation
Related Products
- Caleffi NA644200 : 644 Motorized Ball Valve Body 2-Way
- Caleffi NA644300 3BY : 644 Motorized Ball Valve Body 3-Way Bypass
Frequently Asked Questions
Does Caleffi NA644300 include an actuator?
No. It is Series 644 motorized ball valve body, 3-way diverting, supplied without an actuator. A Caleffi actuator is ordered separately.
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:
- Valve Body
- Product Family:
- Motorized Ball Zone Valves
- Series:
- 644 Valve Body
- Configuration:
- 3-Way
- Supplied As:
- Valve Body Only
- Medium Temperature Range:
- 20-230 deg F
- Flow Coefficient:
- 4.5 Cv
