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Mcdonald-Pump Controller – (Steam)

16 May

Mcdonald-Pump Controller – (Steam)

 SELECTION TOOL

 

 McDonnell & Miller Low Water cut-offs are specially designed to protect steam and hot water boilers from the hazards of a low water condition. In operation they will interrupt the electrical current to the firing device, if the water in the system drops below the boiler manufacturer’s minimum safe water level. Our low water cut-offs also provide an additional circuit for a low water alarm, should you desire to install one, for additional protection

This controller provides constant water pressure using state of the art electronics to drive and enhance the performance of a standard submersible pump. The pressure in a well system is monitored and regulated by the pressure sensor to continually adjust the pump motor speed to meet water supply demands. It eliminates the pressure cycling associated with a conventional well system. SubDrive can deliver dependable constant pressure to provide water well owners with a premium water system.

150S, Float Type, Combo LWCO & Pump Controller – (Steam)

detail catalogue product Mcdonald control water pump boiler

84649_PROD_FILE

83700_PROD_FILE

83699_PROD_FILE

Description
  1. For commercial and industrial low or high pressure boiler applications
  2. For boilers of any steaming capacity
  3. Monel bellows provides corrosion resistance
  4. Snap action switches for high temperature service
  5. 1 Single pole, single throw switch for pump control
  6. 1 Single pole, double throw switch for low water cut-off and alarm actuation
  7. 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)

Application:Steam Boilers
Switch:SPST SPDT
Max Pressure:150 psi
Type:Float-Style Combo
Features:Snap Switch
Reset Type:Automatic
Thread Size:1″
Connection Type:Threaded
Pilot Duty Rating:345 VA
Electrical Ratings (ALR):22.2 A @ 240 VAC
Electrical Ratings (AFL):3.7 A @ 240 VAC
Electrical Ratings (ALR):44.4 A @ 120 Vac
 
 
 
157S, Float Type, Combo LWCO & Pump Controller w/ Water Column (Steam)
 
Description
For residential, commercial and industrial low or high pressure boiler applications
83701_PROD_FILE 83702_PROD_FILE 83703_PROD_FILE
83703_PROD_FILE
SpecificationsFor boilers of any steaming capacityMonel bellows provides corrosion resistanceFloat chamber with integral water column providedSnap action for high temperature service1 Single pole, single throw switch for pump control

1 Single pole, double throw switch for low water cut-off and alarm actuation

Maximum pressure 150 psi (10.5 kg/cm2)

Application:Steam Boilers
Switch:SPST SPDT
Max Pressure:150 psi
Type:Float-Style Combo
Features:w/ Water Column Snap Switch
Reset Type:Automatic
Electrical Ratings (AFL):7.4 A @ 120 Vac
Electrical Ratings (ALR):22.2 A @ 240 VAC
Electrical Ratings (AFL):3.7 A @ 120 VAC
Pilot Duty Rating:345 VA
Connection Type:Threaded
Thread Size:1″

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