The Caleffi 290031 is a full-port low-lead brass isolation ball valve with a 1" male x female metric G-thread union connection and extended stem handle. It isolates connected hydronic components for service and does not separate air or dirt.
Best for isolated service points on insulated piping, where the extended stem clears the insulation.
Specifications sourced from Caleffi North America technical brochure 01397_NA. Last reviewed July 2026.
Key Features
Full-port flow path
Cv 5.8 (Kvs 5.0) for the documented valve configuration.
Low-lead construction
Certified to NSF/ANSI/CAN 61 and NSF/ANSI 372 as documented by Caleffi.
Technical Specifications
| Product type | Isolation ball valve |
| Connection | 1 in male x 1 in female metric G thread union |
| Maximum working pressure | 230 psi |
| Working temperature range | -40 to 300 °F |
| Flow coefficient | Cv 5.8 (Kvs 5.0) |
| Suitable fluids | Water and glycol solutions |
| Shipping Weight | 0.7 lb |
Documentation
Related Products
- Caleffi 290030 : Full-Port Isolation Ball Valve 1" M x F Metric G Union
- Caleffi CBN546205 : DIRTMAG Accessory
- Caleffi CBN546207 : DIRTMAG Accessory
- Caleffi CBN546209 : DIRTMAG Accessory
Frequently Asked Questions
What does Caleffi 290031 do?
Caleffi 290031 is an isolation ball valve used to shut off flow for service. It does not remove air, dirt or magnetic debris.
What connection does Caleffi 290031 use?
It uses a 1" male x 1" female metric G-thread union connection.
What is the operating range?
The documented maximum working pressure is 230 psi and the working temperature range is -40 to 300 °F.
- Product Type:
- Isolation Ball Valve
- Connection Type:
- Male x Female Metric G Union
- Connection Size:
- 1 in
- Max Operating Pressure:
- 230 psi
- Medium Temperature Range:
- -40 - 300 deg F
- Flow Coefficient:
- Cv 5.8
