Johnson Controls R-4000-3 Regulator

The Johnson Controls R-4000-3 is a precision-engineered Miniature Pressure Regulator designed specifically for pneumatic control systems where accurate minimum pressure regulation is required. This pneumatic regulator is commonly utilized as a minimum pressure device to ensure downstream actuators or controllers maintain a specific set point regardless of fluctuating supply air. Equipped with 1/4" Barbed Fittings, it facilitates secure connections to standard pneumatic tubing. With a 25 Psig Maximum Supply Pressure, the R-4000-3 is ideal for low-pressure logic circuits and auxiliary sequences. Technicians prefer this model for its compact footprint and reliable pressure regulation in complex pneumatic panels. By providing a stable reference pressure, it prevents system drops that can lead to equipment cycling or control instability. When installing the R-4000-3 Regulator, ensure the barbed interfaces are seated correctly to prevent bypass leaks in your HVAC control systems.

Key Benefits

• Precise Minimum Pressure Control: Maintains a consistent output for critical pneumatic sequencing.
• 1/4" Barbed Porting: Allows for quick integration into existing pneumatic lines without threaded adapters.
• Compact Form Factor: Fits into tight control cabinets where space is at a premium.
• Industrial Build Quality: High-tolerance internals designed for consistent performance in commercial HVACR environments.
• Low Supply Pressure Optimization: Rated specifically for 25 Psig systems to prevent over-pressurization of sensitive components.

Common Questions

Can the R-4000-3 be used in high-pressure lines?
No, this regulator is rated for a 25 Psig maximum supply. Exceeding this limit can damage the internal diaphragm and lead to control failure.

Is this regulator suitable for field-mounting?
Yes, its miniature size and barbed fittings make it an excellent choice for both panel-mounted applications and field-level pressure adjustments.

How does it function as a minimum pressure device?
It is piped to ensure that even if the primary control signal drops, the downstream component receives the specific "minimum" pressure dialed into the R-4000-3.

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.