Xylem FS7-4S Industrial Liquid Flow Switch 1-1/4" NPT Stainless Steel

The Xylem FS7-4S (Part Number 120160) is a heavy-duty industrial liquid flow switch designed for demanding applications in heating, hydronic systems, air conditioning, refrigeration, and process work. This McDonnell & Miller Series FS7-4 flow switch features a rugged stainless steel body and paddles built to withstand high-pressure environments up to 1000 psi and temperatures ranging from 32°F to 300°F.

Key Features:

• 1-1/4 inch NPT connection size for large pipe applications
• Stainless steel body construction with 1000 psi maximum pressure rating
• Single pole, double throw (SPDT) snap switch for versatile circuit control
• Magnetic switching mechanism eliminates the need for bellows, ensuring reliable operation
• Trimmable paddles allow customization to suit specific application needs
• Sensitivity adjusting screw enables easy flow rate adjustment up to 47 gpm
• NEMA 1 enclosure for general-purpose applications
• 120/240V electrical rating with 44.4A capacity at 50/60 Hz
• Maximum velocity rating of 10 fps

The universal design of the FS7-4S makes it ideal for monitoring liquid flow in commercial and industrial systems where reliable flow detection is critical for equipment protection and process control. The magnetic switching mechanism provides dependable performance without the maintenance concerns associated with bellows-type switches.