Armstrong Pumps
Armstrong Pumps 174035MF-113 115V 1/6 HP Circulator Pump commercial heating
A cast-iron circulator pump moves hot water in closed-loop commercial heating systems at 115 V, delivering 22 gpm at 10 ft head with a 45 ft shut-off
- Delivers 22 gpm at 10 ft head for strong flow
- Achieves best efficiency at 18 gpm and 16 ft head
- Cast iron housing resists corrosion in closed-loop systems
- Direct-drive design eliminates coupling wear for reliability
- 115 V single-phase power suits standard commercial wiring
Armstrong 174035MF-113 Circulator Pump
The Armstrong 174035MF-113 is a hydronic circulating pump built for commercial heating systems. It moves hot water through closed-loop piping in boilers, hydronic heaters and similar installations. The unit operates on 115V AC single-phase power with a 1/6 HP direct-drive motor. Cast-iron housing and included flanges suit typical commercial mechanical rooms.
1 in NPT/Flange Connection Size
The pump features 1 in NPT/flange inlet and outlet connections with an 8 1/2 in face-to-face dimension. This specific connection size and spacing determine whether the unit fits existing piping without modification. Verify the flange pattern and pipe diameter before ordering to avoid rework on the job site.
Sustained Output at 16 ft Head
Best efficiency occurs at 18 gpm against 16 ft of head, while the pump can deliver up to 22 gpm at 10 ft head. Shut-off head reaches 45 ft, showing the pressure limit under zero-flow conditions. Performance drops to 0 gpm at 18 ft head, so the system curve must intersect the pump curve within the usable range for continuous operation.
Highlights
- Delivers 22 gpm at 10 ft head for strong flow
- Achieves best efficiency at 18 gpm and 16 ft head
- Cast iron housing resists corrosion in closed-loop systems
- Direct-drive design eliminates coupling wear for reliability
- 115 V single-phase power suits standard commercial wiring
Specifications
| Brand | ARMSTRONG PUMPS INC. |
|---|
Questions about this item
What does the 1/6 HP rating mean for actual flow in my hydronic loop?
At the best-efficiency point the pump delivers 18 gpm against 16 ft of head; it can reach 22 gpm at 10 ft and shuts off at 45 ft.
How does the 115 V single-phase supply limit where I can install this circulator?
It runs on standard 115 V AC single-phase power, so it plugs into ordinary residential or light-commercial circuits without special wiring.
Will the 15-1/4" length and 1" NPT/flange connections fit my existing piping?
The face-to-face dimension is 8 1/2 in and the overall length is 15 1/4 in with 1 in NPT/flange inlet and outlet, matching many closed-loop hydronic installations.
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