The Caleffi 342452 is an angled radiator isolation and balancing valve with 1/2 in male radiator connection x 3/4 in male pipe connection. It is manually adjusted to isolate the radiator or preset flow for balancing, and does not perform thermostatic control.
Best for the return side of a radiator pair, where flow must be preset for balancing and then locked.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Manual Isolation and Balancing
A manually adjusted valve that isolates the radiator for service and presets flow for balancing. It does not perform thermostatic control and does not accept a control head.
Concealed Preset
The balancing setting is made with an allen key and then covered, so the commissioned flow is not disturbed by occupants.
Construction
Material: brass, Chrome finish.
Technical Specifications
| Product Type | Radiator Isolation And Balancing Valve |
| Connections | 1/2 in male radiator connection x 3/4 in male pipe connection |
| Body Style | Angled |
| Maximum operating pressure | 150 psi (10 bar) |
| Medium temperature range | 40 to 212 deg F (5 to 100 deg C) |
| Finish | Chrome |
| Material | brass |
| Series | Valve Bodies (angled) |
| Shipping Weight | 0.5 lb |
Documentation
Related Products
- Caleffi 338452 : Convertible Angled TRV Body
- Caleffi 339452 : Convertible Straight TRV Body
- Caleffi 387127 : Universal Radiator Tool
- Caleffi 220400A : Angled TRV Body 1/2"
Frequently Asked Questions
Does Caleffi 342452 accept a thermostatic control head?
No. This is a manually adjusted isolation and balancing valve. It isolates the radiator for service and presets flow for balancing, but performs no thermostatic control and does not take a control head.
How is Caleffi 342452 set?
The balancing position is set with an allen key and then covered by the protective cap, so the commissioned flow is not disturbed in service.
What are the pressure and temperature limits of Caleffi 342452?
Maximum operating pressure is 150 psi (10 bar), over a medium temperature range of 40 to 212 deg F (5 to 100 deg C).
What is the warranty on Caleffi 342452?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of shipment. ZOT Supply is an authorized Caleffi distributor.
- Product Type:
- Radiator Isolation And Balancing Valve
- Product Family:
- Radiator Valve Bodies
- Series:
- Valve Bodies (angled)
- Connections:
- 1/2 in male radiator connection x 3/4 in male pipe connection
- Body Style:
- Angled
- Max Operating Pressure:
- 150 psi (10 bar)
- Medium Temperature Range:
- 40 to 212 deg F (5 to 100 deg C)
- Body Material:
- brass
