Armstrong H‑53 1/2 HP Circulator Pump – Cast Iron Flanged Hydronic Pump 1‑1/2"

High‑performance Armstrong H‑53 Series 1/2 HP cast iron hydronic circulator pump with 1‑1/2" flanged connections, ideal for boilers and heating systems. Features a robust three‑piece modular design with radially split body, centrifugal impeller, positive mechanical seal, and durable construction for long‑lasting service. 116439MF-132

Key Specs:

Model: 116439MF‑132 / H‑53BF

Type: Cast Iron Hydronic Circulator Pump

Horsepower: 1/2 HP

Voltage: Single-Phase 115/230 V, 60 Hz

Connections: 1-1/2" Flanged

Flow Rate: Up to ~80 GPM

Maximum Head: ~28–29 ft

Design: Three-piece modular body, radially split

Impeller: Centrifugal, corrosion-resistant

Seal: Positive mechanical seal for leak protection

Installation: Ideal for boilers, hydronic heating, and HVAC systems

Maintenance: Easy to service, durable for long-term performance

Applications: Raypak, Laars, and other hydronic heating systems