3-in-1 · 304 stainless steel
AIR Air & Dirt Separators
3/4" union to 6" ANSI 150 flanged, 6 to 572 GPM
Air and dirt in a hydronic system cause noise, poor heat transfer, pump wear and corrosion. Rhella 3-in-1 air separators remove entrained air, suspended dirt and ferrous particles in one 304 stainless steel unit, for heating and chilled-water systems.
3-in-1 performance
Air elimination
Stainless Pall rings coalesce micro-bubbles; the automatic vent discharges them.
Dirt filtration
Controlled velocity settles dirt and non-magnetic particles for the service drain.
Ferrous capture
A removable M50 neodymium rod protects pumps and valves from abrasive wear.
Serviceable
Remove the air vent to wash out and fully drain any size. Integrated fill port.
Models
Pick by flow and connection
Residential · 3/4" to 2" union
AIR075P
Union connections, Pall rings, magnetView AIR075P →AIR100P
Union connections, Pall rings, magnetView AIR100P →AIR125P
Union connections, Pall rings, magnetView AIR125P →AIR150P
Union connections, Pall rings, magnetView AIR150P →AIR200P
Union connections, Pall rings, magnetView AIR200P →Commercial · 2-1/2" to 6" flanged
Selection table
| Model | Connection | Magnet | Pall rings | Weight, lb | Flow, GPM |
|---|---|---|---|---|---|
| AIR075P | 3/4" Union MNPT | ✓ | ✓ | 1.1 | 6 |
| AIR100P | 1" Union MNPT | ✓ | ✓ | 1.3 | 10 |
| AIR125P | 1-1/4" Union MNPT | ✓ | ✓ | 1.7 | 15 |
| AIR150P | 1-1/2" Union MNPT | ✓ | ✓ | 2.4 | 22 |
| AIR200P | 2" Union MNPT | ✓ | ✓ | 2.9 | 39 |
| AIR250P | 2-1/2" Flange | ✓ | ✓ | 51 | 108 |
| AIR300P | 3" Flange | ✓ | ✓ | 67 | 144 |
| AIR400P | 4" Flange | ✓ | ✓ | 76 | 398 |
| AIR600P | 6" Flange | ✓ | ✓ | 114 | 572 |
Union models ship with press, sweat or FNPT tailpieces, specified at ordering. Flanges: ANSI B16.5 Class 150.
Air separator or hydraulic separator?
Use an air separator when the system has one pump circuit. When the boiler or heat pump has its own pump, use a hydraulic separator; it includes the same air, dirt and magnet functions.
See the LLH hydraulic separators.