Description • Universal design serves the widest variety of large
pipe applications, including heating and hydronic systems, air conditioning, refrigeration and process work
Features • 1¼” NPT
• Brass with sealed tube construction • Single pole, double throw snap switch • Magnetic switching mechanism eliminates need for bellows
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• Sensitivity adjusting screw makes flow adjustment easy • Paddles can be trimmed to suit application needs • Optional features – Extended paddle arm - Model FS7-4L – Two SPDT switches to make or break two separate circuits
– Stainless steel body and paddles – BSPT threads – Fire sprinkler service - Model FS7-4F- for 1¼” thru 21⁄2” NPT piping only
• Minimum temperature (fluid or ambient) 32°F (0°C) • Maximum temperature 300°F (149°C)
• Maximum operating pressure 300 psi (21 kg/cm²) 1000 psi (70 kg/cm²) – Stainless Steel models • Pneumatic control - FS7-4A - option available w/⅛” NPT airline connection; max. 50 psi air supply (non-electrical)