Honeywell 4074BWJ Limit Stop

The Honeywell 4074BWJ is a professional-grade Limit Stop Assembly engineered to establish precise setpoint boundaries on Honeywell Pressuretrol controllers. This critical field-installable accessory is designed for seamless integration with the L404 Series, L604 Series, L91 Series, and L4079 Series pressure controls. By physically restricting the adjustment range, it prevents over-travel and ensures that system operating parameters remain within safe, calibrated limits. The 4074BWJ is technically identical to the 4074BWJ/U model, offering a direct OEM replacement solution for standard HVAC pressure control parts.

This comprehensive kit includes the 129564 Range Stop, the 107194 Range Stop Screw, and the specialized 23466 Wrench required for secure installation. For technicians managing steam, air, or non-combustible gas systems, utilizing a Honeywell pressure limit stop is essential for maintaining consistent differential settings and preventing unauthorized or accidental setpoint drifting. The high-tolerance construction ensures long-term reliability in demanding boiler room environments.

• Enhanced System Safety: Mechanically limits setpoint adjustments to prevent equipment operation outside of specified pressure ranges.
• Full Compatibility: Specifically designed for Honeywell L404, L604, L91, and L4079 Pressuretrol controllers.
• Complete Installation Kit: Includes the range stop, locking screw, and adjustment wrench for immediate field implementation.
• OEM Precision: Direct replacement for 4074BWJ/U, ensuring exact fitment and reliable performance.

How do I install the Honeywell 4074BWJ on an L404 controller?
Remove the controller cover and position the 129564 range stop at the desired maximum or minimum setpoint on the scale. Secure the assembly using the provided 107194 screw and 23466 wrench to lock the limit in place.

Is the 4074BWJ compatible with manual reset models?
Yes, this limit stop assembly is compatible with both automatic and manual reset series, including the L404W and L404Y models, to provide an extra layer of setpoint security.

Can this stop be used to limit both high and low pressure ends?
While typically used to set a high-end limit to prevent over-pressurization, the assembly can be positioned to restrict the adjustment screw at any point on the scale where a physical stop is required.

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.