SERIES PFC DIRECT ACTING PNEUMATIC LIQUID LEVEL CONTROL TSD • Maximum operating pressure 2

• Maximum operating pressure 2 psig (0

84 psig (5

Nominal 18 psig (1

Series 551-S

Models available with:

SERIES PFC DIRECT ACTING PNEUMATIC LIQUID LEVEL CONTROL TSD • Maximum operating pressure 2Float Actuated Pneumatic Series PFC Liquid Level Controls For the actuation of pneumatic valves or relays in heating, air conditioning and process systems in hazardous or non hazardous locations Provides an air pressure signal proportional to the liquid level Available as Direct Acting or Reverse Acting A float operated armature senses the liquid level Switch mechanism is completely sealed from the liquid Two gauges are provided to display the supply