Part shown on picture at far right side is the switch (part #29015 - can be bought separately)

WITH FEEDER QUICK HOOK UP

Features and Benefits

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 hook-up fittings provided Quick-change replaceable cartridge valve and strainer Optional features No. 2 switch Manual reset Model 47 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 boiler pressure 25 psi (1.8 kg/cm2)