42S COMBO PUMP CONTROLLER & LWCO (STEAM) Apollo Relief Valves • Maximum working pressure: 150

• Maximum working pressure: 150 PSIG

• Maximum operating pressure 35 psig (2

13 L/s (Max

Series 551-S

42S COMBO PUMP CONTROLLER & LWCO (STEAM) Apollo Relief Valves • Maximum working pressure: 150Low Water Cut Offs Combination Low Water Cut Off Pump Controllers for Steam Boilers Series 42S Low Water Cut Off Pump Controllers For residential, commercial, and industrial low and medium pressure steam boilers with a separate water column For boilers of any steaming capacity Monel bellows provides corrosion resistance Single pole, single throw snap action switches Enclosed junction box protects switches Optional features Quick hook up fittings Gauge