Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
MCDONNELL 150S-HD Head Mechanism - Replacement HVACR Controls, Switches & Thermostats
MCDONNELLReplacement HVACR Controls, Switches & Thermostats

MCDONNELL 150S-HD Head Mechanism

MCDONNELL Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Head Mechanism.

SKU 3G-OTH-77450

Also listed as: 150SHD · 150S HD

Brand
MCDONNELL
Item
150S-HD Head Mechanism
Part Number
150S-HD
Category
Replacement HVACR Controls, Switches & Thermostats
Available to Order
Also known as:150S-HDMCDONNELL
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
150S-HD
Product Type
Head Mechanism

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

MCDONNELL Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Head Mechanism.

Frequently Asked Questions

What is the MCDONNELL & MILLER 150S-HD head mechanism used for?

The MCDONNELL & MILLER 150S-HD head mechanism is a replacement component for HVACR controls, switches, and thermostats. It is typically used in boiler or steam system applications to sense water level or pressure, ensuring safe and efficient operation in commercial and industrial heating systems.

What are the specifications of the MCDONNELL & MILLER 150S-HD head mechanism?

The MCDONNELL & MILLER 150S-HD is a head mechanism with manufacturer part number 150S-HD. It is classified as a replacement HVACR control component. For detailed technical specifications, consult the product datasheet or contact 3G Electric for assistance.

Where to buy the MCDONNELL & MILLER 150S-HD head mechanism worldwide?

You can source the MCDONNELL & MILLER 150S-HD head mechanism 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 150S-HD head mechanism?

Installation of the MCDONNELL & MILLER 150S-HD head mechanism should follow standard HVACR replacement practices. Ensure power is disconnected, remove the old head, and mount the new unit securely. Refer to the manufacturer's manual for torque and wiring specifics. 3G Electric can provide sourcing support.

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
Not sure this is the right part? Photo-identify it

MCDONNELL Products

3G Electric supplies MCDONNELL replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Dayton
Dayton
Replacement burner head for HVACR systems, used in gas or oil burners for furnaces, boilers, and process heaters. Designed for standard mounting interfaces to ensure ignition and flame stability in commercial and industrial heating applications
Dayton
Dayton
Replacement burner head assembly for HVACR systems. Used in gas or oil burners for furnaces, boilers, and process heaters to support ignition and flame stability
Dayton
Dayton
Burner head assembly for HVACR systems, designed to mix fuel and air for combustion. Used in heating, process heating, and boiler applications requiring flame control
Dayton
Dayton
This burner head assembly is a replacement component for HVACR systems, used in commercial and industrial burners to ensure proper fuel-air mixing and combustion. It is commonly applied in heating, boiler, and process equipment where reliable burner operation is critical

More from MCDONNELL

View all MCDONNELL parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first