Schneider Electric (Barber Colman) N800-9423 Diaphragm

The Schneider Electric (Barber Colman) N800-9423 Diaphragm is a critical replacement component engineered for the 2473 Series pneumatic actuators. This 3-inch pneumatic control diaphragm is designed to restore precise pressure regulation in commercial HVAC systems, ensuring accurate stroke and force for optimal damper and valve positioning. As a direct 21-841 diaphragm replacement, the N800-9423 maintains the same form, fit, and performance specifications as the original equipment, eliminating the need for complex field modifications during service calls.

Constructed with durable materials suitable for high-cycle industrial environments, this part is frequently utilized within M573 Series actuators. The beaded molded neoprene diaphragm provides a consistent effective area of approximately 6 square inches, essential for maintaining the linearity of proportional control. For veteran technicians managing legacy Barber Colman or modern Schneider Electric systems, verifying the part number cross-reference between the N800-9423 and the 21-841 is the first step in resolving air leaks or erratic actuator response. Replacing a ruptured or hardened diaphragm with an authentic OEM-spec actuator repair kit ensures the pneumatic system operates within its intended pressure parameters.

• Provides a seamless fit for 2473 Series and M573 actuator assemblies.
• Ensures accurate pneumatic actuator pressure regulation for building automation sequences.
• Synthesized from high-performance elastomers to resist degradation in demanding mechanical rooms.
• Eliminates air loss, preventing unnecessary compressor cycling and energy waste.
• Identical in technical spec to the 21-841 for reliable legacy support.

Is the N800-9423 compatible with older Barber Colman pneumatic actuators?
Yes, the N800-9423 is the current Schneider Electric part number and is identical to the legacy 21-841 used across various 2473 Series and M573 Series pneumatic actuators.

How do I identify a failing pneumatic actuator diaphragm?
Failure is typically indicated by a persistent air leak (audible hiss) at the actuator housing or the actuator failing to reach its full stroke even when sufficient pneumatic control pressure is applied.

What is the effective area of this 3-inch diaphragm?
The N800-9423 provides a consistent 6 in² effective area, which is standard for the 2473/M573 actuator series to ensure proper torque and valve seating force.

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.