McDonnell & Miller Series 247 & 247-2 Combination Mechanical Water Feeder / Low Water Cut-Offs

• For steam and hot water boilers with cold water feed
• Continuous maintenance of minimum safe water level, independent of electrical service
• Proportional feed action
• Quick-change replaceable cartridge valve and strainer
• Quiet, durable operation
• Isolated feed valve minimizes lime and scale build-up
• Optional features
– No. 2 switch
– Manual reset
• Model 247 can be field upgraded with a No. 2 switch to add low water cut-off function
• Maximum water supply pressure 150 psi (10.5 kg/cm2)
• Maximum inlet water temperature 120˚F (49˚C)
• Maximum vessel pressure 30 psi (2.1 kg/cm2)