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
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HYDRONIC SOLUTIONS CATALOG
IMPELLERS
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PARTS COMPARISON
armstrong b&g equivalent
model part # model part #
S-46
816305-025 Steel
816305-055 Brass
HD-3
118675 Steel
118439 Brass
armstrong b&g equivalent
model part # model part #
H-53 816303-047 Brass 60-13, 1 ½AA 186368
armstrong b&g equivalent
model part # model part #
S-57
H-54
816304-017 Steel
816304-047 Brass
PD 37
60 -14, 2AA
118629 Steel
118626 Brass
armstrong b&g equivalent
model part # model part #
H-52 816302-047 Brass
60-11, 1AA, 1
NAA
186359
armstrong b&g equivalent
model part # model part #
S-55
816304-021 Steel
816304-051 Brass
PD35
118630 Steel
118627 Brass
4¼
3W
2½
1
2
½
1
5N
4D/af
3W
2
X
X
K
Y
2
3W
K
5N
2W
2E/af
5N
7A/a
f
3W
1H/af
K
2
2W
3W
K
Y
3W
armstrong b&g equivalent
model part # model part #
H-41
816301-025 Steel
816301-055 Brass
PR
118830
118612 Brass
4¼
2W
G/af
K
1I/af
3W
dimensions