Honeywell MJK100 Fittings Kit

The Honeywell MJK100 Pneumatic Fittings Kit is the industry-standard solution for securing and maintaining pneumatic control lines in commercial HVAC systems. This comprehensive kit serves as the direct replacement for the 2890-150 fitting set, providing technicians with the critical components needed for brass compression fittings and polyethylene tubing connections. Designed for high-pressure durability and leak-free performance, the MJK100 ensures reliable pneumatic actuator installation and damper motor linkage. By utilizing precision-engineered Honeywell pneumatic parts, contractors can maintain system integrity within pneumatic control loops without worrying about pressure drops or mechanical failure. These fittings are compatible with standard 5/32-inch and 1/4-inch O.D. tubing typically found in legacy and modern pneumatic infrastructures. Whether you are performing a full system retrofit or localized repairs, this kit provides the HVAC pneumatic hardware necessary to meet demanding field specifications and ensure long-term operational stability.

• Direct Interchangeability: Seamlessly replaces the discontinued 2890-150 kit, ensuring total compatibility with existing Honeywell pneumatic architectures.
• Rugged Construction: Engineered with industrial-grade materials to withstand the thermal expansion and vibration common in mechanical rooms.
• Leak-Free Integration: High-tolerance threading ensures a secure seal for pneumatic pilot positioners and sensing lines.
• Versatile Application: Ideal for securing connections on pneumatic thermostats, relays, and master-submaster configurations.

Is the MJK100 compatible with older Barber-Colman or Johnson Controls pneumatic lines?
Yes, while designed as a Honeywell replacement, the sizing conforms to standard pneumatic tubing specifications used across major HVAC control brands.

What tubing materials can be used with these fittings?
The MJK100 is optimized for use with polyethylene (PE), polyurethane (PU), and copper tubing, provided the correct compression inserts are utilized.

Does this kit include everything needed for a damper actuator overhaul?
This kit contains the essential pneumatic connector fittings; however, specific linkage rods or mounting brackets for the actuator itself may need to be sourced separately depending on the mechanical requirements.

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.