153900 Model 69 McDonnell & Miller Low Water Cutt Off
153900 Model 69 2 1/2″ NPT, 4 1/8″ Insertion Length, 20 PSI Max Steam Pressure, Auto Reset Mechanical Low Water Cut Off for Steam Boilers (Part Number 153900)
Product Features
- For mounting in 21⁄2″ NPT boiler side tappings
- Insertion lengths available in 13⁄16 – 41⁄8″ (30-105mm)
- Packless bellows
- Adjustable BX outlet for easy installation
- Dual precision switches for dependable operation of the low water cut-off and an alarm or electric water feeder
- Millivolt circuits
- Maximum steam pressure 20 psi (1.4 kg/cm2)




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