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MCDONNELL Low Water Cut-Off, Part 69 - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL Low Water Cut-Off, Part 69

The MCDONNELL & MILLER Low Water Cut-Off, Part 69, is a replacement component for HVACR equipment, designed to replace worn or nonfunctioning pumps, valves, and tubing. This part is FM Approved and UL Listed…

SKU 3G-OTH-77687

Brand
MCDONNELL
Item
Low Water Cut-Off, Part 69
Part Number
69
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

MCDONNELL
Manufacturer Part Number
69
Standards
FM Approved; SA; UL Listed
Catalog Page
N/A
Product Type
Low Water Cut-Off
Country of Origin
USA (subject to change)
Product Description
These parts replace worn or nonfunctioning pumps, valves, and tubing in HVACR equipment.

Technical Documents

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

Product Description

The MCDONNELL & MILLER Low Water Cut-Off, Part 69, is a replacement component for HVACR equipment, designed to replace worn or nonfunctioning pumps, valves, and tubing. This part is FM Approved and UL Listed, reflecting its compliance with recognized standards. 3G Electric supplies this genuine part, leveraging our sourcing expertise across industrial categories to deliver the right solution for your maintenance needs.

Frequently Asked Questions

What is the MCDONNELL & MILLER Low Water Cut-Off Control 69 used for?

The MCDONNELL & MILLER Low Water Cut-Off Control 69 is used in steam and hot water boilers to automatically shut off the burner if the water level drops below a safe point, preventing dry-fire damage. It is a critical safety device for commercial and industrial heating systems.

What are the specifications of the MCDONNELL & MILLER Low Water Cut-Off Control 69?

The MCDONNELL & MILLER Low Water Cut-Off Control 69 is a low water cut-off device with manufacturer part number 69. It is designed for boiler safety applications. For detailed technical specifications such as pressure ratings or electrical requirements, consult the product datasheet or contact 3G Electric.

Where to buy the MCDONNELL & MILLER Low Water Cut-Off Control 69 worldwide?

You can source the MCDONNELL & MILLER Low Water Cut-Off Control 69 worldwide through 3G Electric. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the MCDONNELL & MILLER Low Water Cut-Off Control 69?

Install the MCDONNELL & MILLER Low Water Cut-Off Control 69 according to the manufacturer's instructions and local codes. Typically, mount it on the boiler water column or piping, connect electrical wiring per the schematic, and test the cut-off function. Always isolate power and drain the system before installation.

Used in

Common applications for MCDONNELL
Commercial boiler rooms — McDonnell & Miller low water cut-offs (e.g., Part 69) for steam and hot water boilers to prevent dry-fire.
Industrial steam systems — McDonnell & Miller water feeders (e.g., 51-S-HD) to maintain water level in low-pressure steam boilers.
HVAC hydronic heating — McDonnell & Miller level controls (e.g., 63-M) for monitoring liquid levels in expansion tanks and receivers.
Boiler maintenance and repair — McDonnell & Miller replacement head mechanisms (e.g., 94-HDLS) to restore function to existing controls.
Process equipment — McDonnell & Miller float blocks (e.g., 64-B) for on/off control of pumps and valves based on liquid level.
Steam boiler safety — McDonnell & Miller level control tappings (e.g., 63-B) to prevent low-water conditions in commercial and industrial systems.
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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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