Johnson Controls F93B-1 Control

The Johnson Controls F93B-1 is a specialized deep well air volume control engineered to manage the air-to-water ratio in pressurized water systems. Designed as a direct replacement for the F93B-1C, this mechanical float-style control features a durable plastic float and brass rod assembly to resist mineral buildup and corrosion common in well applications. It serves a critical function by automatically bleeding excess air from the pressure tank, preventing air binding and ensuring the pump operates within its designed duty cycle. The unit includes a 1-1/4" MPT tank connector for a secure interface and a 1/4" gage tap for easy integration of a pressure monitoring device. Rated for a maximum tank pressure of 100 PSIG, the F93B-1 provides the structural integrity required for heavy-duty residential and light commercial water systems where maintaining consistent head pressure is a priority for system efficiency.

Technical Benefits for Contractors

• Optimized Tank Performance: Specifically tuned for deep well applications to prevent waterlogging and reduce frequent pump cycling.
• Durable Material Selection: The plastic float with brass rod provides superior resistance to aggressive water conditions compared to standard metal floats.
• Direct OEM Compatibility: Verified as identical to F93B-1C, allowing for seamless drop-in replacement without piping modifications.
• Simplified Monitoring: The integrated 1/4" gage tap eliminates the need for additional tees when installing a pressure gauge.
• High Pressure Threshold: Robust construction supports systems up to 100 PSIG, accommodating a wide range of pump cut-in/cut-out settings.

Common Questions

How does this control prevent air-bound systems?
The F93B-1 maintains the proper air cushion by bleeding off air that accumulates above the water level. When the float drops, the valve opens to release excess air, ensuring the tank doesn't become over-pressurized with air volume.

Can the F93B-1 be used on shallow well systems?
While technically possible, this model is specifically calibrated for deep well air volume control requirements. For shallow wells where air is added via a suction-side snifter valve, a different F92 series control is typically recommended.

What is the difference between the F93B-1 and the F93B-1C?
These parts are functionally identical. The "C" suffix often denotes commercial packaging or bulk distribution, but the technical specifications and 1-1/4" MPT connector dimensions remain the same.

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.