The Caleffi 546109A is a DISCALDIRTMAG air & magnetic dirt separator with a 2 in union connection and a steel body, combining air separation, non-ferrous dirt removal and rare-earth magnetic capture of ferrous particles in a single hydronic device.
Product data compiled from Caleffi North America technical documentation. Last reviewed June 2026.
Key Features
Three Functions in One
Combines air separation, dirt separation and ferrous-impurity removal, replacing three separate devices.
Magnetic Ferrous Capture
Rare-earth neodymium magnets deliver roughly 2.5x the ferrous removal of a standard separator.
5 Micron Dirt Removal
An internal screen coalesces micro-bubbles while capturing non-ferrous debris down to 5 micron.
Removable Magnet & Blowdown
Captured debris is purged through the drain valve online; the magnet is removable for cleaning.
2 In Union Connection
2 in union connection sized for the application.
Steel Construction
Steel body with stainless and EPDM internal components for hydronic service.
Technical Data
| Function | Air, dirt and magnetic (ferrous) separation |
|---|---|
| Series | Caleffi DISCALDIRTMAG |
| Connection | 2 in union |
| Body material | Steel |
| Magnet | Neodymium rare-earth |
| Dirt separation | Non-ferrous debris to 5 micron |
| Maximum operating pressure | 150 psi |
| Medium temperature range | 32 - 230 °F |
| Suitable fluids | Water, glycol solution (max 50% glycol) |
Documentation
Technical brochureRelated Products
Frequently Asked Questions
This DISCALDIRTMAG adds dirt separation to 5 micron and magnetic capture of ferrous particles, while a DISCAL removes air only.
The rare-earth neodymium magnet delivers roughly 2.5 times the ferrous-impurity removal of a standard air and dirt separator.
No. Captured debris purges through the drain valve while the system stays online; the magnet is removable to release ferrous particles during blowdown.
150 psi maximum operating pressure with a medium temperature range of 32 - 230 °F.
- Type:
- Air & Magnetic Dirt Separator
- Series:
- DISCALDIRTMAG
- Magnetic Separation:
- Yes
- Body Material:
- Steel
- Connection Type:
- Union
- Connection Type:
- NPT Threaded
- Connection Size:
- 2 in
