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McDonnell & Miller FS8-WJ Paddle Flow Switch, 1 in BSP, 7.4 A @ 120V AC - Inline Switches for Liquids
McDonnell & MillerInline Switches for Liquids

McDonnell & Miller FS8-WJ Paddle Flow Switch, 1 in BSP, 7.4 A @ 120V AC

The MCDONNELL & MILLER FS8-WJ is a paddle-type flow switch for liquids, designed for inline installation in 1-inch pipes with a 1-inch BSP connection. It features a contact rating of 7.4 A at 120V AC (full load)…

SKU 3G-OTH-88455

Also listed as: FS8WJ · FS8 WJ

Brand
McDonnell & Miller
Item
FS8-WJ Paddle Flow Switch, 1 in BSP, 7.4 A @ 120V AC
Part Number
FS8-WJ
Category
Inline Switches for Liquids
Available to Order
Also known as:FS8-WJMcDonnell & Miller
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Local availability & support — Singapore

Local office
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Phone
+65 8878 8355
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Technical Specifications

McDonnell & Miller
Manufacturer Part Number
FS8-WJ
For Pipe Size
1 in
Connection Size
1 in
Contact Rating (AC)
7.4 A @ 120V (Full Load)

Technical Documents

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

Product Description

The MCDONNELL & MILLER FS8-WJ is a paddle-type flow switch for liquids, designed for inline installation in 1-inch pipes with a 1-inch BSP connection. It features a contact rating of 7.4 A at 120V AC (full load). This switch is used to detect liquid flow in piping systems.

Frequently Asked Questions

What is the MCDONNELL & MILLER FS8-WJ flow switch used for?

The MCDONNELL & MILLER FS8-WJ is a paddle-type flow switch that detects liquid flow in piping systems. It is commonly used in HVAC, boiler, and industrial process applications to monitor flow and trigger alarms or control equipment when flow starts or stops.

What are the specifications of the MCDONNELL & MILLER FS8-WJ?

The FS8-WJ is a paddle flow switch for 1-inch pipes with a 1-inch BSP connection. It has a contact rating of 7.4 A at 120V AC (full load). The switch is designed for inline installation in liquid systems and is manufactured by MCDONNELL & MILLER.

Where to buy the MCDONNELL & MILLER FS8-WJ worldwide?

3G Electric supplies the MCDONNELL & MILLER FS8-WJ flow switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the MCDONNELL & MILLER FS8-WJ flow switch?

Install the FS8-WJ in a horizontal pipe section with the paddle oriented correctly for flow direction. Ensure the pipe is 1-inch BSP threaded. Follow standard electrical safety practices for wiring the 7.4 A contact rating. Always consult the manufacturer's manual for torque and positioning details.

Used in

Common applications for McDonnell & Miller
Boiler systems — McDonnell & Miller FS4-3T3-1 flow switch for low-water cutoff and pump protection in 1-inch piping.
Pump control — McDonnell & Miller FS8-W flow switch for detecting flow in 1-inch lines to prevent dry running.
HVAC cooling water — McDonnell & Miller FS6-3/4 flow switch for monitoring flow in 3/4-inch chilled water circuits.
Process piping — McDonnell & Miller FS5-3/4 brass flow switch for hot water applications up to 250°F.
Industrial liquid monitoring — McDonnell & Miller FS6-W-1 flow switch for 1-inch lines with high locked-rotor rating.
Small pipe systems — McDonnell & Miller FS-1 flow switch for 1/2-inch lines in liquid circuits requiring flow detection.
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McDonnell & Miller Products

3G Electric supplies McDonnell & Miller inline 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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