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Furnace Parts DIY
Steel Fitting 783-004 furnace replacement part

Furnace Parts DIY

783-004 3/4" BLACK MALLEABLE STEEL COUPLING

$4.00

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

In stock

Pickup available at 75 Blue Mountain St #3, Coquitlam

Usually ready in 24 hours

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Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

This 3/4-inch black malleable steel coupling is a high-strength plumbing fitting designed to connect two lengths of threaded pipe in a straight line. Engineered for durability and a secure fit, this coupler is an essential component for residential and commercial gas line installations, including natural gas and propane systems. Its heavy-duty malleable iron construction provides excellent pressure ratings and resistance to wear, making it ideal for connecting gas ranges, water heaters, furnaces, and boilers. The black finish is specifically designed for oil and gas applications where corrosion resistance is required for non-potable water, steam, and air lines. Whether you are repairing a gas supply line or installing a new appliance, this standard NPT threaded coupling ensures a reliable, leak-proof connection.

Specifications

Type
Steel Pipe Fitting
Size
3/4 inch
Dimensions
Standard coupling length × 3/4 inch nominal pipe size
Application
Commonly used in gas line installations for ranges, ovens, water heaters, furnaces, and steam heating systems. Suitable for natural gas, propane, and low-pressure steam applications.
Specifications
Material: Malleable Steel/Iron; Finish: Black; Threading: Female NPT (National Pipe Thread); Class: Standard pressure rating.

Not sure this is the right part?

Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.

1-778-759-9864

Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com

Common questions

Will the 783-004 3/4" BLACK MALLEABLE STEEL COUPLING fit my furnace?

The 783-004 is a replacement part. Match your furnace model number on our site to confirm the fit. This Steel Fitting is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.

How do I know if the 783-004 is compatible with my furnace?

The easiest way is to match the part number (783-004) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Steel Fittings for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.

How fast can I get the 783-004 shipped?

Most Steel Fittings including the 783-004 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.

Can I pick up the 783-004 at your store?

Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Steel Fittings orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 783-004 is in stock before visiting.

Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.

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