The Johnson Controls KNB26A-600R is a field-replaceable thermostat adjustment knob specifically engineered for Penn T26

leading to air bypass and decreased static pressure

Whether you are servicing a mid-sized 206A or a high-capacity 407A

a flexible averaging sensor (like the STE-1411/1412) is recommended

The current sensor portion is self-powered via induction from the monitored conductor

Schneider Electric (Erie) VT2252 Valve Body Els PW 17895 The Johnson Controls KNB26A-600R isThe Schneider Electric (Erie) VT2252 Valve Body is a professional grade two way zone valve engineered for precision control in closed hydronic systems. This 1 2 inch SAE Flare body is a core component of the Erie PopTop series, designed for seamless integration with spring return actuators in fan coil, baseboard, and air handler applications. With a 2. 5 Cv flow coefficient, this forged brass body ensures a low pressure drop while managing fluid