We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

Mcdonnell & Miller Series AF2 Air Flow Switches
Mcdonnell & MillerFlow Switches

Mcdonnell & Miller Series AF2 Air Flow Switches

Note: listed by manufacturer as obsolete/discontinued.

SKU 3G-OTH-02749

Brand
Mcdonnell & Miller
Item
Series AF2 Air Flow Switches
Category
Flow Switches
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Documents

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Mcdonnell & Miller Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Note: listed by manufacturer as obsolete/discontinued.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the McDonnell & Miller AF2 flow switch used for?

The McDonnell & Miller AF2 flow switch is designed for low-velocity applications in ducts with a minimum size of 8 inches (203 mm). It is commonly used in HVAC systems to detect airflow and activate alarms or control equipment. The switch features a brass, steel, and aluminum paddle assembly.

What are the specifications of the McDonnell & Miller AF2 flow switch?

The AF2 flow switch from McDonnell & Miller fits a minimum duct size of 8 inches (203 mm) and includes two electrical knock-outs for wiring from either end. The paddle assembly is constructed from brass, steel, and aluminum. Note: the manufacturer lists this model as obsolete or discontinued.

Where to buy the McDonnell & Miller AF2 flow switch in Singapore?

3G Electric supplies the McDonnell & Miller AF2 flow switch to customers in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for current availability and lead time, as this model is listed as discontinued by the manufacturer.

How to install the McDonnell & Miller AF2 flow switch?

Install the AF2 flow switch by mounting it in a duct with at least 8 inches (203 mm) diameter. Use the two electrical knock-outs for wiring connections. Ensure the paddle is correctly oriented for low-velocity flow detection. Follow general electrical safety practices and consult the manufacturer's manual for specific torque and clearance requirements.

Used in

Common applications for Mcdonnell & Miller
Steam boiler low-water cutoff — McDonnell & Miller inline flow switches (e.g., FS-1) for automatic burner shutdown
Cooling water flow monitoring — McDonnell & Miller insertion-style switches (e.g., FS4-3D) in large-diameter pipes
Hazardous-area process lines — McDonnell & Miller FS7-4E with NEMA 7/9 enclosure for Class I, Div 1 locations
HVAC chilled water systems — McDonnell & Miller FS6-1 inline switch for pump flow verification
Industrial wastewater treatment — McDonnell & Miller FS4-3S stainless steel switch for corrosive fluid flow detection
Boiler feedwater control — McDonnell & Miller FS8-WJ with BSP connections for international installations

Mcdonnell & Miller Products

3G Electric supplies Mcdonnell & Miller flow switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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