Hankison 3230764 Pressure Switch

The Hankison 3230764 Pressure Switch is a high-performance manual reset (M/R) high-pressure cut-out designed for industrial compressed air systems and refrigerated air dryers. Engineered to provide critical system protection, this switch features a fixed trip point of 281# (PSI), effectively preventing over-pressurization that can lead to catastrophic component failure. This OEM pressure switch is cross-compatible and functionally identical to part number 4130.138.25, ensuring seamless integration for technicians sourcing replacement parts for SPX Flow and Hankison equipment.

Built for the rigors of continuous duty, the Hankison 3230764 utilizes a normally closed (NC) configuration, opening the circuit when system pressure reaches the 281 PSI threshold. Its manual reset mechanism is a vital safety feature, requiring a technician to physically inspect the system and manually depress the reset button before operation can resume. This prevents the "cycling" effect common in automatic switches, which often masks underlying issues like fouled condenser coils or restricted expansion valves in industrial air dryers.

Key Benefits

• Precision Pressure Monitoring: Calibrated for a 281 PSI high-pressure cut-out to protect downstream pneumatic components.
• Direct OEM Interchangeability: Fully replaces Hankison 4130.138.25 without the need for mounting modifications or bracket adjustments.
• Enhanced Safety Logic: The manual reset pressure switch design ensures that high-pressure faults are diagnosed by a professional before restarting.
• Rugged Construction: Designed specifically for HVACR and compressed air environments, capable of withstanding heavy vibration and thermal stress.
• Simplified Installation: Features standard threading and electrical terminals for fast field replacement, reducing system downtime.

Common Questions

What is the difference between Hankison 3230764 and 4130.138.25?
Technically, there is no difference in performance or fitment. Part number 3230764 is identical to 4130.138.25 and can be used interchangeably in all documented applications.

Why does this switch require a manual reset?
High-pressure trips often indicate a serious system fault, such as a fan motor failure or a blocked heat exchanger. The manual reset ensures that the system does not automatically restart and operate under dangerous conditions until a technician has addressed the root cause.

Can this be used on non-Hankison equipment?
While designed for Hankison air dryers, this switch is compatible with any system requiring a normally closed 281# M/R pressure switch, provided the thread type and electrical ratings align with your specific application specs.

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.