McDonnell & Miller 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 and output pressures
• Alternate air connection tappings are provided for greater flexibility in piping
• Operating range: 1 – 2″ (25 – 51mm)
• Air pressure
– Supply 20 psi (1.4 kg/cm2)
– Output 3 – 15 psi (.2 – 1 kg/cm2)
• Maximum water temperature 406°F (208°C)
• Maximum pressure 250 psig (17.6 kg/cm2