Watts 00063067 Flow Switch

The Watts 00063067 FS-200-W is a rugged, paddle-type flow switch designed for contractors requiring dependable liquid flow monitoring in commercial and industrial piping. This general-purpose unit serves as a critical safety or operating control, capable of managing pumps, burners, or alarms by sensing flow or no-flow conditions. Specifically engineered for non-corrosive water media, it features a 1-inch NPT male connection and integrates seamlessly into systems with pipe diameters ranging from 1 to 6 inches. The assembly includes four heavy-duty stainless steel paddles and a robust EPDM seal, which outperforms standard mechanical bellows in durability. The SPDT (Single Pole Double Throw) switch provides precise electrical switching for motors and signaling devices. With a NEMA 1 enclosure, dual 7/8-inch electrical knockouts, and a maximum service rating of 160 PSI at 250°F, the FS-200-W is the industry-standard replacement for McDonnell & Miller, Taco, Penn, and the discontinued FS10-C (0063060) models.

Key Professional Benefits:

• Universal Compatibility: Serves as a direct field replacement for most major brands, including McDonnell & Miller and Penn, reducing truck stock requirements.
• Enhanced Sealing: High-grade EPDM seal provides superior leak protection and longevity compared to traditional bellows.
• Customizable Sensing: Includes multiple stainless steel paddles that can be trimmed to fit pipe sizes from 1" to 6" for versatile application.
• Reliable Switching: Features a SPDT switch for flexible wiring to either start or stop equipment based on flow demand.
• Industrial Build: Rated for high-temperature hydronic loops up to 250°F and pressures up to 160 PSI.

Common Contractor Questions:

Can this switch be installed in vertical piping?
Yes, but only if the liquid flow is upward. Installation in downward flow piping is not recommended as it may cause inaccurate readings or mechanical failure.

Is the Watts FS-200-W suitable for potable water systems?
No. This model is not lead-free compliant and is intended strictly for closed-loop heating, cooling, and non-potable processing applications.

How many pipe diameters are needed for accurate sensing?
For stable operation and to prevent turbulence issues, it is best practice to provide at least 5 pipe diameters of straight run on both sides of the paddle.

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.