McDonnell & Miller Air Flow Switches

McDonnell & Miller Series AF1 Air Flow Switches

Series AF1 air flow switches are for general-purpose applications with medium and high-velocity requirements.

Features:

• Paddle fits 8" (203mm) minimum duct size or 6" (152mm) if trimmed
• Brass, steel, and aluminum construction
• Single pole, double throw snap switch
• Sensitivity adjusting screw makes flow adjustment easy
• Two electrical knock-outs allow connection from either end
• Can be equipped with a time delay relay
• Optional features: stainless steel
• Minimum ambient temperature: 32°F (0°C)
• Maximum duct temperature: 300°F (149°C)

McDonnell & Miller Series AF2 Air Flow Switches

Series AF2 air flow switches are ideal for low-velocity applications.

Features:

• Paddle fits 8" (203mm) minimum duct size
• Two electrical knock-outs allow connection from either end
• Brass, steel, and aluminum construction
• Single pole, double throw snap switch
• Sensitivity adjusting screw makes flow adjustment easy
• Can be equipped with a time delay relay
• Minimum ambient temperature: 32°F (0°C)
• Maximum duct temperature: 300°F (149°C)

McDonnell & Miller Series AFE-1 Air Flow Switches

Series AFE-1 air flow switches are ideal for industrial hazardous environment applications requiring a NEMA 7 (Class I, Division I, Group C, and D) or NEMA 9 (Class II, Division I, Group E, F, and G) rated flow switch for medium velocity.

Features:

• 1/2" NPT conduit connection
• Paddle fits 8" (203mm) minimum duct size
• Brass, steel, and aluminum construction
• Single pole, double throw snap switch
• Magnetic switching mechanism eliminates the need for bellows
• Sensitivity adjusting screw makes flow adjustment easy
• Maximum ambient temperature: 120°F (49°C)
• Maximum duct temperature: 275°F (135°C)

McDonnell & Miller Series AF3 Air Flow Switches

Series AF3 air flow switches are ideal for general-purpose low-velocity applications.

Features:

• Paddle fits 8" (203mm) minimum duct size
• Two electrical knock-outs allow connection from either end
• Brass, steel, and aluminum construction
• Single pole, double throw snap switch
• Sensitivity adjusting screw makes flow adjustment easy
• Can be equipped with a time delay relay
• Two SPDT snap switches are optional
• Minimum ambient temperature: 32°F (0°C)
• Maximum duct temperature: 275°F (135°C)