McDonnell & Miller 64 (143600) Level Switch
Model: MM64
Low Price: $294.40

McDonnell & Miller 64 (143600) Level Switch

By: McDonnell & Miller Model: MM64 ID: 26502

More Views

Low Price: $294.40
Bread Checkout
Authorized McDonnell & Miller Dealer





The McDonnell & Miller Model 64level switch is a mechanical float-type level switch. The switch is piped into an external water column via 1” NPT equalizing pipes. This switch is typically used as a low-level switch, high-level switch, or low water cut-off and is typically installed on boilers (50 psi maximum), feedwater tanks, and deaerators. The switch includes two precision single-pole single-throw switches (one NO and one NC). The McDonnell & Miller 64 is commonly used for three different applications within boiler feed systems:

• Low level alarm: A single Model 64 level switch can be used to detect a low-level condition. This is common on tanks of all sizes.

• High level alarm: A single Model 64 level switch can be sued to detect a high-level condition. This is common on tanks of all sizes.

• On/Off makeup valve control: Two Model 64 level switches can be used in conjunction to control an electronic two position makeup control valve.

The lower of the two switches controls when the valve opens. The higher of the two switches controls when the valve closes. This type of control is common for applications where maintaining a steady flow into the tank is not required, for example, medium sized atmospheric feed tanks (100 to 750 gallons). This design is very robust and provides more flexibility compared to a single level controller.

  • Maximum Operating Pressure: 50 PSI
  • Connects to tank via 1” NPT equalizing pipes
  • Includes cast iron float housing
  • 2 precision switches.
  • 1 Normally Open (NO) and 1 Normally Closed (NO) set of contacts
  • Switches rated for 7.4 amps at 120 VAC (3.7 amps at 240 VAC)


Additional Information

Manufacturer McDonnell & Miller
Weight (in lbs) 11.3000
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information PROPOSITION 65 WARNING



Be the first to review this product

Write Your Own Review

You're reviewing: McDonnell & Miller 64 (143600) Level Switch

How do you rate this product? *

1 1 star
2 2 star
3 3 star
4 4 star
5 5 star

Product Q & A

Product Questions
Ask a Question Ask a Question

Sort By: 


Why Buy From Us?

Customer Satisfaction

Our dedicated staff works hard to ensure that all orders are handled quickly and efficiently to ensure that you get what you ordered as quickly as possible.



We provide a secure online shopping experience to protect your information. We also provide the option to checkout with PayPal to allow you to use a checkout service you are familiar with.


Save Money

Our low price guarantee provides you with confidence and piece of mind, knowing you purchased a quality product at a great price


See What Our Customers are Saying

Coupon: df56s5d8
Customer Reviews