Description
The Armstrong S‑25 is a cast‑iron in‑line circulator pump from the Armstrong Series S line, designed for hydronic heating and cooling systems, domestic water applications and general industrial service. With a 1/12 hp single‑phase motor at 115 V and a durable radially‑split body design, it offers reliable performance and ease of maintenance.
Features
- 1/12 HP motor in a compact in‑line design.
- 115 V single‑phase, 60 Hz operation.
- Cast‑iron volute body with bronze‑fitted impeller available.
- Modular three‑piece design allows motor/impeller module removal without piping disconnection.
- Rated for up to 225 °F and 125 psig in many configurations.
Specs
Model / Series: S‑25 (Armstrong Series S)
Part Number Example: 174031MF‑013
Horsepower: 1/12 HP (≈0.08 HP)
Voltage / Phase: 115 V, Single‐Phase
Maximum Flow: Up to ~31 GPM in the variant without flanges
Maximum Head: See curve sheet; typical in low‑head zone applications
Body Material: Cast Iron
Maximum Fluid Temperature: 225 °F (depending on model)
Maximum Working Pressure: 125 psig for some variants.
Connection Type: Flanged (flanges not included in basic model)
Part Number Example: 174031MF‑013
Horsepower: 1/12 HP (≈0.08 HP)
Voltage / Phase: 115 V, Single‐Phase
Maximum Flow: Up to ~31 GPM in the variant without flanges
Maximum Head: See curve sheet; typical in low‑head zone applications
Body Material: Cast Iron
Maximum Fluid Temperature: 225 °F (depending on model)
Maximum Working Pressure: 125 psig for some variants.
Connection Type: Flanged (flanges not included in basic model)
