MCDONNELL & MILLER Combination Low Water Cut-Off/Pump
The MCDONNELL & MILLER Combination Low Water Cut-Off/Pump Controller (Model 93-HDLS) is a replacement HVACR pump, valve and tubing component. This controller integrates low water cut-off and pump control functions…
SKU 3G-OTH-82934
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Product Description
The MCDONNELL & MILLER Combination Low Water Cut-Off/Pump Controller (Model 93-HDLS) is a replacement HVACR pump, valve and tubing component. This controller integrates low water cut-off and pump control functions into a single unit, designed to protect boilers and manage condensate or feedwater pump operation.
Frequently Asked Questions
What is the MCDONNELL & MILLER 93-HDLS combination low water cut-off/pump controller used for?
The MCDONNELL & MILLER 93-HDLS is used in steam and hot water boiler systems to automatically shut off the burner if the water level drops too low, preventing dry-fire damage. It also functions as a pump controller to maintain proper water level in the boiler.
What are the specifications of the MCDONNELL & MILLER 93-HDLS?
The MCDONNELL & MILLER 93-HDLS is a combination low water cut-off and pump controller. Its manufacturer part number is 93-HDLS. It is designed for use in replacement HVACR pumps, valves, and tubing applications. For detailed electrical ratings and pressure limits, consult the product datasheet.
Where to buy the MCDONNELL & MILLER 93-HDLS worldwide?
You can source the MCDONNELL & MILLER 93-HDLS through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to install the MCDONNELL & MILLER 93-HDLS low water cut-off?
Install the MCDONNELL & MILLER 93-HDLS in the boiler's water line according to the manufacturer's instructions. Ensure proper electrical connections per local codes and verify the float mechanism moves freely. Always isolate power before installation and test operation after mounting.
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3G Electric supplies MCDONNELL replacement hvacr pumps, valves & tubing. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













