172810 Model 150S-M-MD-HD McDonnell & Miller Head Mechanism

172810 (previously 173302)

Series 150S
Low Water Cut-Off/Pump Controllers

• For commercial and industrial low or high pressure boiler applications
• For boilers of any steaming capacity
• Monel bellows provides corrosion resistance
• Snap action switches for high temperature service
  • 1 Single pole, single throw switch for pump control
  • 1 Single pole, double throw switch for low water cut-off and alarm actuation
• Optional features
  • Manual reset
  • 2 Single pole, single throw switches
  • 2 Single pole, double throw switches
  • Float block
  • BSPT threads
• Maximum pressure 150 psi (10.5 kg/cm2 )