Caleffi MixCal 521409A is a 1/2" sweat-connection three-way thermostatic mixing valve for domestic hot water and hydronic/radiant heating systems. Maintains outlet temperature 85–150°F with ±3°F accuracy, compensating for inlet temperature and pressure fluctuations. Low-lead brass body (DZR, <0.25% lead), ICC-ES certified to ASSE 1017 and CSA B125.3, compliant with NSF/ANSI 372 and plumbing codes IPC, IRC, UPC, NPC.
Caleffi 521409A Thermostatic Mixing Valve 1/2" Sweat
Caleffi
$169.95
In Stock
- SKU:
- 521409A
- Product Type:
- Three-Way Thermostatic Mixing Valve
- Subcategory:
- Domestic Hot Water / Hydronic
- Application:
- Residential/Commercial
- System Type:
- Boiler, Radiant Heating, Hydronic, Domestic Hot Water
- Installation Type:
- OEM Replacement
- Temperature Range:
- 32°F to 200°F
- Setpoint Range:
- 85–150°F
- Pressure Rating:
- 200 psi
- Inlet Size:
- 1/2" Sweat
- Connection Type:
- Sweat/Solder
- Connection / Joint:
- Sweat/Solder
- Material:
- Low-lead brass (DZR), PPO, stainless steel, peroxide-cured EPDM
- Lead-Free (NSF/ANSI 372):
- Yes