Armstrong S-46 LV Series Circulation Pump Less Volute

Armstrong S-46 Less Volute

The Armstrong S-46 Less Volute (LV) is a heavy-duty replacement assembly designed to neutralize hydraulic degradation in high-head circulation systems. This module includes a precision-balanced impeller calibrated to stabilize laminar flow and maximize head pressure within existing S-46 pump casings. By integrating a new rotating assembly into the original volute, this unit facilitates rapid system recovery and maintains structural integrity, ensuring consistent fluid distribution across large-scale commercial HVAC networks under sustained operational loads.

Utilizing a high-torque 1/3HP motor architecture, the S-46 LV executes precise rotational control to mitigate electrical consumption during peak demand cycles. The integrated mechanical seal assembly is engineered to sustain vacuum-tight integrity up to 250°F thermal thresholds, preventing leakage and pressure loss. By leveraging robust internal bearings and a high-alloy steel shaft, this configuration minimizes axial deflection and stabilizes rotational frequency, significantly extending the operational life of the primary pump system.

Key Features of Armstrong S-46

• Powerful 1/3HP motor ensures 1750 RPM
• Durable LV body withstands 175 PSI
• Leak proof seal prevents 250F leaks
• Superior shaft system reduces maintenance costs
• Max 85 USGPM flow capacity ensures performance
• Practical LV design fits S-46 casings
• Versatile applications for 35 foot head