Xylem-McDonnell & Miller FS5-S-1 1″ NPT In-Line General Purpose Flow Switch

The Xylem-McDonnell & Miller FS5-S-1 is a dependable, general purpose in-line flow switch engineered for hydronic heating, cooling, and process piping systems where reliable flow detection is essential. Built with a stainless steel body, this switch is designed to withstand demanding environments and resist corrosion, making it a long-lasting solution for commercial and industrial HVAC applications.

Product Overview

The FS5-S-1 monitors liquid flow in pipelines and triggers a snap-acting SPDT (Single-Pole, Double-Throw) switch upon detecting flow or loss of flow. This makes it ideal for use as a safety interlock to protect pumps, boilers, chillers, and other hydronic equipment from dry-run or no-flow conditions.

Key Features

• 1″ NPT in-line connection for straightforward installation into existing piping
• Stainless steel body construction for corrosion resistance and durability
• Snap-acting SPDT switch for reliable, positive switching action
• General purpose design suitable for a wide range of liquid flow detection applications
• Compact in-line form factor minimizes installation footprint
• Compatible with hydronic heating and cooling systems, boiler protection circuits, and process piping

Typical Applications

• Boiler and chiller flow proving and safety interlocks
• Hydronic heating and cooling system flow monitoring
• Pump protection against no-flow or dry-run conditions
• Commercial and industrial process piping flow detection

Product Details

• Brand: Xylem-McDonnell & Miller
• Model: FS5-S-1
• Part Number: 114795
• Connection Size: 1″ NPT
• Body Material: Stainless Steel
• Switch Type: Snap-Acting SPDT
• Installation Type: In-Line

Trust the Xylem-McDonnell & Miller FS5-S-1 to deliver consistent, accurate flow detection in your HVAC or hydronic system. Order from Jackson Systems for fast shipping and expert support.