Armstrong 174037MF-143, Model S-46, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/3 HP, 115 Volts, 1 Phase, 112 GPM Max, Lead Free, Maintenance Free Design

The Armstrong S series of in-line circulator pumps have been used by HVAC professionals for decades because they are cost-effective, durable and easy to maintain. This series is suitable for applications such as hydronics heating and cooling, domestic water systems, multi-stage zoning and general industrial services. Models in the S series are available in a wide range of sizes to match the performance requirements of any of these applications. The S series is built using a standard three piece design that features a radially split body, over sized shaft, centrifugal impeller, sintered silicon carbide seal, and modular construction. This series is all about convenience. The radially split body can be left in line while servicing the pump, eliminating cumbersome disconnecting of pipes. An oversized shaft provides longer service life under severe working conditions. A proven method of preventing water leakage, the well known sintered silicon carbide construction is a frequently imitated feature of the Armstrong circulator. Made from long-lasting hard-wearing materials, it ensures many years of noise-free, trouble-free service. These pumps are durable and among the most reliable circulator pumps in the industry. The balanced centrifugal design impeller ensures maximum water delivery. Besides the existing sleeve bearing design