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MCDONNELL 93-M-HD Combination Low Water Cut-Off/Pump Controller - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL 93-M-HD Combination Low Water Cut-Off/Pump Controller

The MCDONNELL & MILLER Combination Low Water Cut-Off/Pump Controller (Model 93-M-HD) is a replacement HVACR pump, valve and tubing component. This controller integrates low water cut-off and pump control functions in…

SKU 3G-OTH-75056

Also listed as: 93MHD · 93 M HD

Brand
MCDONNELL
Item
93-M-HD Combination Low Water Cut-Off/Pump Controller
Part Number
93-M-HD
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
Also known as:93-M-HDMCDONNELL
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MCDONNELL
Manufacturer Part Number
93-M-HD
Controller
93-M-HD Mfr Part #
Product Type
Combination Low Water Cut-Off/Pump Controller

Technical Documents

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MCDONNELL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MCDONNELL & MILLER Combination Low Water Cut-Off/Pump Controller (Model 93-M-HD) is a replacement HVACR pump, valve and tubing component. This controller integrates low water cut-off and pump control functions in a single device, designed to protect boilers from low-water conditions while managing pump operation.

Frequently Asked Questions

What is the MCDONNELL & MILLER 93-M-HD combination low water cut-off/pump controller used for?

The MCDONNELL & MILLER 93-M-HD is a combination low water cut-off and pump controller used in steam and hot water boiler systems. It protects boilers from low-water conditions by shutting down the burner and can also control the boiler feed pump, ensuring safe and efficient operation in commercial and industrial HVAC applications.

What are the specifications of the MCDONNELL & MILLER 93-M-HD?

The MCDONNELL & MILLER 93-M-HD is a combination low water cut-off and pump controller. Its manufacturer part number is 93-M-HD. It is designed for use in boiler systems to prevent low-water damage and control feed pumps. For detailed electrical ratings and pressure limits, consult the manufacturer's datasheet.

Where to buy the MCDONNELL & MILLER 93-M-HD worldwide?

You can source the MCDONNELL & MILLER 93-M-HD worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply this replacement HVACR component to customers across multiple industries.

How to install the MCDONNELL & MILLER 93-M-HD low water cut-off?

Install the MCDONNELL & MILLER 93-M-HD according to the manufacturer's instructions and local codes. Typically, mount it in the boiler's water line, connect electrical wiring per the schematic, and verify proper operation of the cut-off and pump controller functions. Always isolate power and drain the system before installation.

Used in

Common applications for MCDONNELL
Steam boiler low-water cutoff — McDonnell & Miller 61 level control
Condensate receiver level monitoring — McDonnell & Miller RS-4-BR-1 4-level sensor
HVACR pump suction filtration — McDonnell & Miller 340700 strainer basket assembly
Flow switch head replacement — McDonnell & Miller 63-HD head mechanism
Boiler control circuit safety — McDonnell & Miller 7-BM electrical switch with manual reset
Field servicing of flow switches — McDonnell & Miller 310452 cartridge kit
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MCDONNELL Products

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.

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