The Caleffi NA549200A is a HydroCal unit providing 3-in-1 hydraulic, air and dirt separation, with 8" ANSI Flange connections, ASME Section VIII code stamped. It installs between the boiler circuit and the distribution circuits in hydronic heating and chilled water systems.
Best for systems needing hydraulic, air and dirt separation in one vessel without magnetic capture.
Specifications sourced from Caleffi NA technical literature, 2025 revisions.
Key Features
Three Functions in One Body
Combines hydraulic separation, air elimination and dirt separation in a single vessel, reducing installed footprint and joint count.
Low-Velocity Separation Chamber
An enlarged internal chamber drops fluid velocity so entrained air rises and heavier particulate settles, both continuously removed in service.
ASME Code Stamped with CRN
Fabricated and stamped to ASME Section VIII for 150 psi working pressure, with Canadian Registration Number for cross-border projects.
Blowdown Drain and Air Vent
An integral brass blowdown valve clears collected sediment and an automatic air vent discharges separated air without shutting the system down.
ANSI Flanged Connections
Flanged ports simplify installation and removal on large-diameter mains and support higher flow rates.
Technical Specifications
| Connection Size | 8" |
| Connection Type | ANSI Flange |
| Connection Style | ANSI Flange |
| Separation Functions | 3-in-1 hydraulic, air and dirt separation |
| Maximum operating pressure | 150 psi |
| Medium temperature range | 32 - 270 deg F |
| Material | steel |
| Code Stamp | ASME Section VIII / CRN registered |
| Product Family | HydroCal |
| Shipping Weight | 520.0 lb (approx.) |
Documentation
Design Resources
Related Products
- Caleffi NA549052A : HydroCal 2" ANSI Flange ASME
- Caleffi NA549062A : HydroCal 2-1/2" ANSI Flange ASME
- Caleffi NA549082A : HydroCal 3" ANSI Flange ASME
- Caleffi NA549102A : HydroCal 4" ANSI Flange ASME
Frequently Asked Questions
What does Caleffi NA549200A do in a hydronic system?
Caleffi NA549200A provides 3-in-1 hydraulic, air and dirt separation. A hydraulic separator creates a low-velocity zone between the boiler circuit and the distribution circuits so each pump operates against its own loop only, removing flow interference without relying on closely spaced tees.
What size connection does Caleffi NA549200A have?
It is supplied with 8" ANSI Flange connections. Sizing should be based on system flow rate rather than pipe size alone; other sizes in the HydroCal family are listed under Related Products.
Is Caleffi NA549200A ASME code stamped?
Yes. This model is fabricated and stamped to ASME Section VIII for 150 psi working pressure and carries a Canadian Registration Number for projects requiring provincial registration.
What is the warranty on Caleffi NA549200A?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of purchase. ZOT Supply is an authorized Caleffi distributor.
- Product Family:
- HydroCal
- Separation Functions:
- 3-In-1 Hydraulic, Air And Dirt Separation
- Connection Style:
- ANSI Flange
- Connection Type:
- ANSI Flange
- Connection Size:
- 8 inch
- ASME Code Stamped:
- Yes
- CRN Registered:
- Yes
- Max Operating Pressure:
- 150 psi
- Medium Temperature Range:
- 32 - 270 deg F
- Body Material:
- steel