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McDonnell & Miller FS254 Insertion-Style Flow Switch for Liquids - Insertion-Style Switches for Liquids
McDonnell & MillerInsertion-Style Switches for Liquids

McDonnell & Miller FS254 Insertion-Style Flow Switch for Liquids

The MCDONNELL & MILLER General Purpose Switch: Paddle is an insertion-style switch for liquids designed for use in 1-inch pipe sizes. It features a brass construction with a 1-inch NPT connection and is rated for a…

SKU 3G-OTH-93557

Also listed as: FS 254 · FS-254

Brand
McDonnell & Miller
Item
FS254 Insertion-Style Flow Switch for Liquids
Part Number
FS254
Category
Insertion-Style Switches for Liquids
Available to Order
Also known as:FS254McDonnell & Miller
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Technical specs
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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 Specifications

McDonnell & Miller
Manufacturer Part Number
FS254
Type
1 in/6 in For Pipe Size, Brass, NPT
NPT
1 in
For Pipe Size
1 in
Contact Rating (AC)
3.7 A @ 240V (Full Load)

Technical Documents

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

Product Description

The MCDONNELL & MILLER General Purpose Switch: Paddle is an insertion-style switch for liquids designed for use in 1-inch pipe sizes. It features a brass construction with a 1-inch NPT connection and is rated for a full-load AC contact rating of 3.7 A at 240V. This model, part number FS254, is suitable for flow detection in liquid systems.

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 FS254 general purpose switch used for?

The MCDONNELL & MILLER FS254 is an insertion-style paddle switch for liquids. It detects flow in 1-inch pipe systems, commonly used in HVAC, boiler, and industrial liquid handling applications to monitor or control pump operation.

What are the specifications of the MCDONNELL & MILLER FS254?

The FS254 is a brass paddle switch for 1-inch pipe size with a 1-inch NPT connection. Its AC contact rating is 3.7 A at 240V full load. This McDonnell & Miller model is designed for liquid flow detection in industrial systems.

Where to buy the MCDONNELL & MILLER FS254 worldwide?

3G Electric supplies the MCDONNELL & MILLER FS254 worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this insertion-style switch globally.

How to install the MCDONNELL & MILLER FS254 paddle switch?

Install the FS254 into a 1-inch NPT threaded fitting in the pipe. Ensure the paddle is oriented correctly for flow direction. Follow standard wiring practices for the 3.7 A at 240V contact rating. Always consult local codes and the manufacturer's manual for safe installation.

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
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McDonnell & Miller Products

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

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