63B-M LOW WATER CUT-OFF - STEAM AND HOT WATER - W/ FLOAT BLOCK W/ MANUAL RESET Steam Trap • Maximum operating temperature 366°F

• Maximum operating temperature 366°F (186°C)

3⁄4" NPT top inlet

As an added measure of safety

To ensure a long life to this pump a strainer is always recommended in front of the pump inlet

• Dual precision switches for dependable operation of the low water cut-off and an alarm or electric water feeder

63B-M LOW WATER CUT-OFF - STEAM AND HOT WATER - W/ FLOAT BLOCK W/ MANUAL RESET Steam Trap • Maximum operating temperature 366°FLow Water Cut Offs Mechanical For Steam and Hot Water Boilers Series 63 Low Water Cut Offs For residential, commercial, and industrial applications Heavy duty Includes No. 2 switch Optional manual reset available Maximum boiler pressure 50 psi (3. 5 kg cm2) Use with TC 4 on hot water systems McDonnell & Miller Series 63 Data Sheet