Armstrong Pumps — Hot Water Circulating Pumps — Hydronic Circulating Pump, 1/4 hp, 115, 1 Phase, NPT/Flange Connection

This Hot Water Circulating Pumps from Armstrong Pumps supports day-to-day operations where predictable fit and dependable handling matter.

Quick specs

• Features: Compact, High Performance, Permanently Lubricated Ball Bearings
• Shaft Material: Stainless Steel
• Thermal Protection: yes
• Overall Length: 17.25 in
• Manufacturer Part Number: 116431MF-132
• UPC: 672807424480

Product information

• Country of Origin: United States
• Manufacturer Part Number: 116431MF-132
• UPC: 672807424480

Dimensions

• Inlet/Outlet Size: 1 in
• Face to Face Dimension: 11 1/2 in
• Overall Height: 11.5 in
• Overall Length: 17.25 in
• Overall Width: 13.5 in
• Manufacturer Warranty Length: 2 yr
• Compatible Discharge Pipe Size: 1 in
• Compatible Intake Pipe Size: 1 in
• For Inlet Pipe Diameter: 1 in
• For Discharge Pipe Diameter: 1 in

Details

• Maximum Flow Rate @ 5 Feet of Head: 55 gpm
• Compatible Media Type: Water
• Maximum Media Temperature: 225 Degrees F
• Pump Housing Material: Cast Iron
• For Use With Potable Systems: No
• Pipe to Flange or Union Connection Type: FNPT
• Series Family: S&H
• Maximum Flow Rate @ 1 Feet of Head: 58 gpm
• Maximum Flow Rate @ 50 Feet of Head: [DELETE]
• Nameplate Voltage: 115V AC
• Maximum Flow Rate @ 10 Feet of Head: 40 gpm
• Shaft Material: Stainless Steel
• Thermal Protection: yes
• Impeller Material: Metal
• Loop Configuration: Closed
• Mechanical Seal: Maintenance Free
• Pump Mount: In Line
• Features: Compact, High Performance, Permanently Lubricated Ball Bearings
• Compliance: NSF-372
• Maximum Flow Rate @ 25 Feet of Head: 0 gpm
• Maximum Flow Rate @ 15 Feet of Head: 30 gpm
• Flange or Union Included: Yes
• Maximum Operating Pressure: 175 psi
• Body Gasket Material: Silicon Carbide

This Hot Water Circulating Pumps is a practical option for maintenance teams and procurement.

Recommended for facility operations and routine servicing and designed to support reliable operation in demanding environments.

Highlights

• Suitable for maintenance, repair, and project-based procurement.
• Helps keep specifications consistent across replacements and replenishment cycles.
• Designed for professional use where predictable fit and handling are important.
• Works well in standardized part lists and preventative maintenance schedules.

Notes: Review application constraints and installation requirements to ensure the part meets your needs.