Replacement Parts
Table Of Contents
- commercial & residential pumps
- Design Envelope Compass Circulators
- Astro 2 Circulators
- Astro 2 Hot Water Recirculation Systems
- Astro 2 24-hour timer
- Aquastat controls
- Astro Express 2 Hot Water Recirculation
- S&H 3-Piece Circulators
- 1050 & 1060 3-Piece Circulators
- E.2 Circulators
- E.2 Circulator Spool Pieces
- 4270 & 4270 Stock Motor Mounted Pumps
- 4360 Pump-in-a-Box
- 4380 Pump-in-a-Box
- Design Envelope 4300/4380 Pump-in-a-Box
- hydronic specialties
- circuit balancing valves (cbv)
- replacement parts
- parts look up
- competition circulator cross reference
- technical data
- Pump Formulas
- Pressures & Altitudes
- Freezing & Boiling Points
- Ethylene Glycol Properties
- Propylene Glycol Properties
- Water Properties
- Useful System Curve Formulas
- Pipe Maximum Pressures
- Hydraulic Resistance
- Pipe Information
- Pipe Fittings & Valves Friction Loss
- Water Flow Calculator
- Unit Conversions
- Typical Symbols
- Product Solution Outlines/Brochures
FLANGE KITS
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PARTS INFORMATION
103
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HYDRONIC SOLUTIONS CATALOG
union fitting sets (contain two (2) half unions and gaskets
model part number connection weight
Astro 20/25BU
810120-220 1.25" npsm × 0.5" Sweat
2 (0.91)
810120-222 1.25" npsm × 0.75" Sweat
810120-224 1.25" npsm × 0.5" fnpt
Astro 220SSU/225SSU
810120-320
Lead free bronze*
1.25" npsm × 0.5" Sweat
810120-322
Lead free bronze*
1.25" npsm × 0.75" Sweat
810120-324
Lead free bronze*
1.25" npsm × 0.5" fnpt
All dimensions are in inches (mm) and weights are in lbs (kgs).
*Certified <0.25 weighted average percent lead and Complies with California Health and Safety Code Section 116875 (commonly known as AB1953).