Xylem FS4-3J General Purpose Liquid Flow Switch BSPT

The Xylem FS4-3J is a general purpose liquid flow switch designed for starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, and metering devices. This model features BSPT (British Standard Pipe Taper) thread connections, making it ideal for international applications.

Key Features:

• 1-inch BSPT connection for international installations
• SPDT (Single Pole Double Throw) snap switch configuration
• Maximum pressure rating of 160 PSI
• Temperature range: 32°F to 300°F
• Flow rate capacity: 6 to 166 GPM depending on pipe size
• Includes four stainless steel paddles: 1", 2", 3", and 6" for various pipe sizes
• Adjustable sensitivity screw for easy flow rate adjustment
• Two electrical knock-outs allow connection from either end
• Sealed monel bellows and hardened stainless steel bearings for durability
• NEMA 1 enclosure

Specifications:

• Voltage: 120/240 VAC
• Contact rating: 7.4A at 125 VAC
• Frequency: 50/60 Hz
• Maximum velocity: 10 ft/sec
• Dimensions: 8.4" H x 3.4" W x 3" D

This universal design serves a wide variety of applications and is a direct replacement for common flow switches from manufacturers such as Johnson/Penn, Potter/Taco, Watts, and Hydrolevel. Part number 114610.