McDonnell & Miller PFC-1-G Pneumatic Liquid Level Control

The Pneumatic Liquid Level Control from McDonnell & Miller (PFC-1-G) is a direct-acting, float-type control designed to maintain precise liquid levels with air actuation. This unit combines rugged construction with reliable response to changing levels, making it ideal for demanding boiler and process applications.

Key specs include 1 inch threaded ports, a tall 20-3/4 inch body height, and a robust 250 PSIG pressure rating. The system operates from a 20 PSI supply with an adjustable 3 to 15 PSI output, ensuring smooth, stable control across a range of liquids.

• Type: Direct Acting, Float
• Ports: 1 in. threaded x 1 in. threaded
• Height: 20-3/4 in
• Media Handled: Liquid
• Water Level Adjustment: 1–2 in
• Temperature Rating: 406°F
• Pressure Rating: 250 PSIG; 20 PSI supply / 3–15 PSI output (air)
• Inclusions: 2 gauges