Johnson Controls F261MAL-V01C Flow Switch

The Johnson Controls F261MAL-V01C is a professional-grade liquid flow switch designed to monitor fluid flow in various HVACR and industrial applications. This NEMA 4 flow switch serves as the direct F61MG-1 replacement, offering an upgraded polycarbonate enclosure that provides superior protection in high-humidity or outdoor environments. Built for versatile integration, it comes with 1", 2", 3", and 6" stainless steel paddles, allowing technicians to adapt the device for multiple pipe diameters at the job site. The unit features gold-plated contacts (SPDT), making it ideal for low-voltage, low-current dry circuits such as electronic controllers and PLCs where traditional silver contacts might fail due to oxidation.

Engineered for high-performance safety, the F261MAL-V01C utilizes a Viton diaphragm, ensuring compatibility with fluids like water, ethylene glycol, and chlorinated water. With a maximum fluid pressure of 290 psi and a wide media temperature range from -20°F to 250°F, this mechanical flow switch provides reliable protection across diverse systems, including chillers and cooling towers, by preventing equipment operation during low-flow conditions.

Key Benefits:

• Versatile Compatibility: Replaces the older F61MG-1 series and includes trim-to-fit paddles for pipes ranging from 1 to 6 inches.
• Advanced Contact Reliability: Features gold-plated electrical contacts specifically designed for dry circuit applications and low-energy signals.
• Durable Construction: The NEMA 4 (IP67) enclosure and Viton seals allow for installation in demanding indoor or outdoor atmospheres.
• High Pressure Rating: Safely handles systems with a maximum pressure of 290 psig, suitable for heavy-duty industrial fluid lines.

Common Questions:

How do I wire the F261MAL-V01C for a chiller?
The SPDT switch typically uses the Red (Common) and Yellow terminals to close on a flow increase, allowing the compressor to run only when sufficient flow is detected. The Blue terminal closes on flow decrease for alarm signaling.

Can I use this switch for potable water?
No, this model is constructed with a copper alloy containing lead and is intended for non-potable liquid applications such as cooling loops, whirlpools, or treated water systems.

What is the maximum flow rate?
While the switch actuates at low flows, it is rated to handle a maximum flow rate of 760 GPM depending on the pipe size and paddle configuration used.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.