Schneider Electric (Barber Colman) 2372-502 Selector

The Schneider Electric 2372-502 Pneumodular High Pressure Selector is a critical component for pneumatic control systems requiring reliable signal selection based on highest pressure priority. Designed for seamless integration into Barber Colman Pneumodular manifolds, this unit effectively compares two pneumatic signals and transmits the higher of the two to the output port. Operating with a 20 psig main air pressure and a rated air capacity of 8 SCFH, the 2372-502 ensures precise pressure logic in complex HVAC sequences. This model is the specified direct replacement for legacy part numbers AK-51332 and AK-51632, allowing for straightforward field retrofits without re-piping. The barbed nipple connections are versatile, accommodating both 1/4" O.D. and 5/32" I.D. plastic tubing, maintaining airtight integrity in high-demand environments. For technicians managing pneumatic control system maintenance, this selector provides a durable, non-electronic solution for HVAC pressure signal selection and signal switching.

Key Benefits

• Direct Legacy Replacement: Engineered to replace obsolete AK-51332 and AK-51632 selectors, ensuring system continuity.
• Pneumodular Compatibility: Designed for standard manifold mounting to streamline pneumatic logic controller installations.
• Precision High-Signal Selection: Accurately routes the higher of two input pressures to facilitate proper sequencing of valves or dampers.
• Flexible Porting: Universal barbed fittings support multiple pneumatic tubing sizes for easier field adaptation.

Common Questions

How does the 2372-502 function within a pneumatic circuit?
This device acts as a "High Pressure Selector." It compares two independent input signals and passes the signal with the higher pressure value to the output, which is essential for multi-zone cooling or heating resets.

Can this selector be used in low-pressure applications?
While optimized for a 20 psig main air supply, it functions reliably across standard HVAC pneumatic ranges, provided the air is clean, dry, and oil-free to prevent logic clogging.

Is the mounting hardware included for manifold installation?
The 2372-502 features the standard Schneider Electric Pneumodular footprint for snap-in mounting on existing manifolds, though specific gaskets or mounting screws should be verified against the existing base.

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.