If the circuit remains open while the system is above 250 PSI

Key Benefits Precision-engineered for a secure fit on 812 and 882 series inverted bucket traps

this kit enables precise pressure regulation within an 8" to 11" WC adjustment range

Built with a rugged frame and precision-balanced internal components

Honeywell 14004139-001 Retrofit Kit THPU32HP7Y If the circuit remains openThe Honeywell 14004139 001 is a professional grade Positive Positioner Retrofit Kit designed specifically for field converting MP953A pneumatic actuators to the high performance MP953E series. Engineered for 8 inch and 13 inch diameter actuators, this kit is essential for contractors looking to improve proportional control and eliminate hysteresis in existing HVAC pneumatic systems. This heavy duty assembly includes the 14004211 001 feedback spring