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MCDONNELL & MILLER Flow Switch: 3/4 in For Pipe Size, 3/4 in NPT, 3/4 in Connection Size - Inline Switches for Liquids
McDonnell & MillerInline Switches for Liquids

MCDONNELL & MILLER Flow Switch: 3/4 in For Pipe Size, 3/4 in NPT, 3/4 in Connection Size

The MCDONNELL & MILLER FS6-W-3/4 is an inline flow switch for liquids designed for a 3/4 in pipe size with a 3/4 in NPT connection. It features a SPDT switch with a contact rating of 3.7 A @ 240V (Full Load).

SKU 3G-OTH-88502

Also listed as: FS6W34 · FS6 W 3 4 · FS6-W-3-4

Brand
McDonnell & Miller
Item
Flow Switch: 3/4 in For Pipe Size, 3/4 in NPT, 3/4 in Connection Size
Category
Inline Switches for Liquids
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 Specifications

McDonnell & Miller
Manufacturer Part Number
FS6-W-3/4
Type
NPT, SPDT
NPT
3/4 in
For Pipe Size
3/4 in
Connection Size
3/4 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 FS6-W-3/4 is an inline flow switch for liquids designed for a 3/4 in pipe size with a 3/4 in NPT connection. It features a SPDT switch with a contact rating of 3.7 A @ 240V (Full Load).

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 FS6-W-3/4 flow switch used for?

The MCDONNELL & MILLER FS6-W-3/4 is an inline flow switch for liquids that detects flow or no-flow conditions in a 3/4 in pipe. It is commonly used in HVAC, boiler, and industrial process systems to protect equipment by activating alarms or shutting down pumps when flow is lost.

What are the specifications of the MCDONNELL & MILLER FS6-W-3/4?

The MCDONNELL & MILLER FS6-W-3/4 is designed for a 3/4 in pipe size with a 3/4 in NPT connection. It features a SPDT switch with a contact rating of 3.7 A @ 240V (Full Load). The manufacturer part number is FS6-W-3/4.

Where to buy the MCDONNELL & MILLER FS6-W-3/4 worldwide?

You can source the MCDONNELL & MILLER FS6-W-3/4 flow switch through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the MCDONNELL & MILLER FS6-W-3/4 flow switch?

Install the MCDONNELL & MILLER FS6-W-3/4 in a horizontal pipe section with the flow arrow aligned to flow direction. Use thread sealant on the 3/4 in NPT connection and wire the SPDT switch per your control circuit. Always follow local codes and the manufacturer's instructions.

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 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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