42S COMBO PUMP CONTROLLER & LWCO (STEAM) Apollo Relief Valves • Install 6-10" (150-250mm) above

• Install 6-10" (150-250mm) above horizontal return and 8" (450mm) above the boiler water line

ASME Section IV capacity certified bronze safety relief valve for protection of hot water heating boilers

13 L/s (Max

Series 551-S

Hoffman Specialty Tempering Valves are designed to control temperature in water mixing applications such asradiant floor heating

42S COMBO PUMP CONTROLLER & LWCO (STEAM) Apollo Relief Valves • Install 6-10" (150-250mm) aboveLow 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