This control is engineered for industrial HVAC maintenance

it provides precise flow regulation without the need for a minimum pressure differential to operate

Can I use the Auburn I-31 as a substitute

The H91 series should be mounted according to manufacturer specifications

reducing the need for secondary contactors in many applications

Honeywell 14004138-001 Retrofit Kit 30067439-890 This control is engineered forThe Honeywell 14004138 001 Positive Positioner Retrofit Kit is the industry standard solution for field converting MP953B pneumatic valve actuators to the high performance MP953F configuration. This technical kit is engineered specifically for reverse acting actuators and is used to replace the legacy Gradutrol relay with a modern positive positioner. By integrating this kit, contractors can upgrade existing 13 inch diaphragm units to the latest pilot