MCDONNELL & MILLER Flow Switch: 1 in For Pipe Size, 1 in NPT, 1 in Connection Size
The MCDONNELL & MILLER Flow Switch (MPN FS6-1) is an inline switch for liquids designed for a 1 in pipe size with a 1 in NPT connection. It features a SPDT contact configuration and an AC contact rating of 44.4 A @…
SKU 3G-OTH-88546
Also listed as: FS61 · FS6 1
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The MCDONNELL & MILLER Flow Switch (MPN FS6-1) is an inline switch for liquids designed for a 1 in pipe size with a 1 in NPT connection. It features a SPDT contact configuration and an AC contact rating of 44.4 A @ 120V (Locked Rotor).
Frequently Asked Questions
What is the MCDONNELL & MILLER FS6-1 flow switch used for?
The MCDONNELL & MILLER FS6-1 flow switch is used to detect liquid flow or no-flow conditions in piping systems. It is commonly applied in HVAC, boiler, and industrial process lines to interlock pumps, alarms, or burners when flow stops or starts.
What are the specifications of the MCDONNELL & MILLER FS6-1 flow switch?
The FS6-1 is an inline SPDT flow switch for liquids. It fits a 1 in pipe size with a 1 in NPT connection. Its AC contact rating is 44.4 A at 120V (locked rotor). The manufacturer part number is FS6-1, and it is made by MCDONNELL & MILLER.
Where to buy the MCDONNELL & MILLER FS6-1 flow switch worldwide?
3G Electric supplies the MCDONNELL & MILLER FS6-1 flow switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
How to install the MCDONNELL & MILLER FS6-1 flow switch?
Install the FS6-1 in a horizontal pipe section with the flow arrow aligned to flow direction. Use thread sealant on the 1 in NPT connection. Wire the SPDT contacts per your control circuit (44.4 A locked rotor max). Always follow local codes and the manufacturer's manual.
Used in
Common applications for McDonnell & MillerMcDonnell & 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.
