Description
The Ashcroft B429BXFM-15 is a precision-engineered pressure switch designed for demanding industrial and commercial HVAC applications where reliable pressure monitoring and safety shutoff are critical. With a 0–15 PSI operating range and manual reset on decrease functionality, this switch provides dependable protection against low-pressure conditions — requiring deliberate operator intervention before the system can be re-energized after a trip event.
Key Features
- 0–15 PSI pressure range for low-pressure monitoring and control
- SPDT (Single Pole Double Throw) switching action for versatile circuit integration
- Manual reset on decrease — prevents automatic restart after a pressure drop event
- 1/4″ NPT process connection for easy installation on standard piping
- Buna N (Nitrile) seal material for compatibility with a wide range of media including air, water, and many oils
- Watertight NEMA 4X enclosure — rated for indoor and outdoor use, resistant to corrosion, dust, and water ingress
- FM (Factory Mutual) approved for use in safety-critical and hazardous-location applications
Why Choose the Ashcroft B429BXFM-15?
Ashcroft is a globally recognized leader in pressure measurement and control instrumentation. The B429 series pressure switches are built to perform in tough environments, combining a robust NEMA 4X watertight enclosure with FM approval — making them a trusted choice for facilities that demand compliance with rigorous safety standards. The manual reset feature adds an extra layer of operational safety by ensuring that a qualified technician must physically reset the switch before resuming normal operation after a low-pressure fault.
Typical Applications
- HVAC and refrigeration system pressure monitoring
- Compressed air and pneumatic system protection
- Pump and compressor low-pressure cutout
- Industrial process control and safety interlock circuits
- Outdoor or wash-down environments requiring NEMA 4X protection
Specifications
- Brand: Ashcroft
- Model / SKU: B429BXFM-15
- Pressure Range: 0–15 PSI
- Switch Type: SPDT (Single Pole Double Throw)
- Reset Type: Manual Reset on Decrease
- Process Connection: 1/4″ NPT
- Seal Material: Buna N (Nitrile)
- Enclosure Rating: NEMA 4X (Watertight)
- Approval: FM (Factory Mutual)
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