The Caleffi 1725N1A is a thermostatic manifold mixing station with 12 outlets and a 3-speed pump, holding the supply temperature at a fixed low-temperature set point for radiant floor systems and including a removable primary hydraulic separator with check valve.
Product data compiled from Caleffi North America technical documentation. Last reviewed July 2026.
Key Features
Fixed-Point Thermostatic Mixing
A thermostatic actuator with built-in sensor holds the flow temperature at a constant low-temperature set point.
Integral Circulator Pump
Includes a 3-speed pump for the radiant secondary loop.
Removable Hydraulic Separator
A removable primary-circuit hydraulic separator with check valve decouples the primary and secondary flows.
12-Outlet Manifold
Serves 12 radiant circuits from a 1-1/4 inch manifold with 3/4 inch outlets.
Technical Data
| Function | Thermostatic manifold mixing station |
|---|---|
| Number of outlets | 12 ports |
| Manifold connection | 1-1/4 in |
| Circulator pump | 3-Speed Pump |
| Maximum operating pressure | 150 psi |
| Adjustment temperature range | 80 - 130 °F |
| Maximum inlet temperature | 195 °F |
| Outlet center distance | 2 in |
Documentation
Technical brochureRelated Products
Frequently Asked Questions
It is a thermostatic manifold mixing station with 12 outlets that supplies a low-temperature radiant floor system at a constant mixed temperature.
Yes. It is supplied with a 3-speed circulator pump and a removable primary hydraulic separator with check valve.
A thermostatic actuator holds a fixed low-temperature set point suitable for radiant floor panels (adjustable within the station's range).
- Type:
- Thermostatic Mixing Station
- Number of Ports:
- 12
- Pump Type:
- 3-Speed Pump
- Configuration:
- Standard
- Connection Size:
- 1-1/4 in
