The Caleffi 437516 is a compression fitting 1/2 in copper x 3/4 in nut for Caleffi 301, 338, 339, 342 and 343 series valves. It is supplied as a service or installation component and is not a standalone valve.
Best for completing or servicing an existing Caleffi radiator valve installation.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Service and Installation Component
Supplied as a component for Caleffi 301, 338, 339, 342 and 343 series valves. It is not a standalone valve.
Technical Specifications
| Product Type | Accessory |
| Connections | 1/2 in copper compression x 3/4 in female straight-thread nut |
| Compatibility | Caleffi 301, 338, 339, 342 and 343 series valves |
| Maximum operating pressure | 150 psi (10 bar) |
| Finish | Chrome |
| Medium temperature range | -13 to 250 deg F (-25 to 120 deg C) |
| Series | Accessories |
Documentation
Related Products
- Caleffi 387127 : Universal Radiator Tool
- Caleffi 449010 : Manual Knob
- Caleffi 449740 : Wall-Covering Plate 40-50 mm
- Caleffi 681503A : PEX Fitting 3/8 in Nominal
Frequently Asked Questions
What is Caleffi 437516?
Caleffi 437516 is a component for Caleffi 301, 338, 339, 342 and 343 series valves. It is supplied as a service or installation part, not a standalone valve.
What are the pressure and temperature limits of Caleffi 437516?
Maximum operating pressure is 150 psi (10 bar), over a medium temperature range of -13 to 250 deg F (-25 to 120 deg C).
What is the warranty on Caleffi 437516?
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:
- Accessory
- Product Family:
- Connection Valves
- Series:
- Accessories
- Connections:
- 1/2 in copper compression x 3/4 in female straight-thread nut
- Compatibility:
- Caleffi 301, 338, 339, 342 and 343 series valves
- Max Operating Pressure:
- 150 psi (10 bar)
- Medium Temperature Range:
- -13 to 250 deg F (-25 to 120 deg C)