Description
The Belimo ZONE215S-35 is a factory-assembled, 2-way zone valve and actuator combination engineered for precise hydronic flow control in residential and light commercial heating and cooling systems. Featuring a 1/2″ sweat (solder) end connection and a Cv of 3.5, this unit delivers dependable on/off flow regulation in zoned hydronic applications including fan coils, terminal units, and radiant systems.
Belimo’s ZONE215S series integrates the valve body and electric actuator into a single, compact package — eliminating the need for separate components and simplifying installation. The sweat connection ensures a secure, leak-free joint compatible with standard copper piping.
Key Features
- 2-way, normally closed valve configuration for reliable shutoff
- 1/2″ sweat (solder) end connections for standard copper pipe compatibility
- Cv 3.5 flow coefficient for accurate hydronic flow control
- Integrated motor and valve body — factory-assembled for easy installation
- On/off actuation ideal for zone control in hydronic heating and cooling systems
- Compact, space-saving design suitable for tight mechanical spaces
- Suitable for use with hot water, chilled water, and glycol solutions
Typical Applications
- Residential and light commercial hydronic zoning
- Fan coil units and terminal unit control
- Radiant floor and ceiling heating systems
- Chilled water cooling coil control
- Zone panels and multi-zone hydronic systems
Why Choose Belimo
Belimo is a globally recognized leader in HVAC actuator and valve technology, known for quality construction, long service life, and ease of installation. The ZONE215S-35 reflects Belimo’s commitment to reliable, efficient hydronic control — making it a trusted choice for HVAC professionals and contractors.







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