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

3G Electric
RFQ CartGet a QuoteSign inSign up
NIBCO 771-LF 4 Low-Lead Cast Bronze Tube Flange, 4 in CTS Cup x 4 in Pipe Flange - Low-Lead Cast Copper & Bronze Tube Flanges
NIBCOLow-Lead Cast Copper & Bronze Tube Flanges

NIBCO 771-LF 4 Low-Lead Cast Bronze Tube Flange, 4 in CTS Cup x 4 in Pipe Flange

NIBCO Low-Lead Cast Copper & Bronze Tube Flanges. Specifications: Type: Cup x Flange, Bronze.

SKU 3G-OTH-475809

Also listed as: 771LF4 · 771 LF 4 · 771-LF-4

Brand
NIBCO
Item
771-LF 4 Low-Lead Cast Bronze Tube Flange, 4 in CTS Cup x 4 in Pipe Flange
Category
Low-Lead Cast Copper & Bronze Tube Flanges
Available to Order
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

NIBCO
Manufacturer Part Number
771-LF 4
Type
Cup x Flange, Bronze

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

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

Product Description

NIBCO Low-Lead Cast Copper & Bronze Tube Flanges. Specifications: Type: Cup x Flange, Bronze.

Frequently Asked Questions

What is a NIBCO 771-LF 4 sweat fitting adapter used for?

This NIBCO bronze tube flange connects 4-inch CTS copper tube to 4-inch pipe using a cup x flange design. It is used in plumbing, HVAC, and industrial piping systems where a low-lead, corrosion-resistant joint is required for water or other non-aggressive fluids.

What are the specifications of the NIBCO 771-LF 4?

The NIBCO 771-LF 4 is a low-lead cast bronze sweat fitting adapter with a cup x flange connection. It fits 4-inch CTS copper tube on one side and 4-inch pipe on the flange side. The manufacturer part number is 771-LF 4, and the type is Cup x Flange, Bronze.

Where to buy a NIBCO 771-LF 4 worldwide?

3G Electric supplies the NIBCO 771-LF 4 bronze sweat fitting adapter to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this low-lead cast copper flange.

How to install a NIBCO sweat fitting adapter?

Clean the copper tube end and the cup interior of the NIBCO 771-LF 4. Apply flux, then heat the cup evenly until solder melts into the joint. Allow to cool without disturbance. For the flange side, bolt to the mating pipe flange using appropriate gasket and fasteners.

Used in

Common applications for NIBCO
HVAC systems — NIBCO bronze ball valves (T58570UL series) for isolation and control in chilled water loops
Water treatment plants — NIBCO bronze gate valves (T29 series) for shut-off in filtration and distribution lines
Industrial burner systems — NIBCO brass ball valves (GB2A series) for fuel oil or gas supply lines
Chemical processing — NIBCO bronze ball valves with locking lever (T58570LL series) for safety-critical flow control
Steam systems — NIBCO bronze globe valves for throttling in low-pressure steam applications
General plumbing — NIBCO bronze ball valves (S58570 series) with sweat connections for copper piping in commercial buildings

NIBCO Products

3G Electric supplies NIBCO low-lead cast copper & bronze tube flanges. 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
This wrot copper tube flange has a cup x flange connection, sized 3 in CTS x 3 in Pipe. It is used to join copper tubing to flanged pipe systems in plumbing and hydronic heating applications. The low-lead construction makes it suitable for potable water systems. Installation is by soldering
NIBCO
This wrot copper tube flange has a cup x flange connection, sized 3 in CTS x 3 in Pipe. It is used to join copper tubing to flanged pipe systems in plumbing and hydronic heating applications. The low-lead construction makes it suitable for potable water systems. Installation is by soldering
This low-lead cast copper fitting connects 3/8 in CTS copper tube to 3/8 in male NPT pipe with a cup x MNPT configuration. Used in plumbing and HVAC systems for joining tube to threaded pipe
NIBCO
This low-lead cast copper fitting connects 3/8 in CTS copper tube to 3/8 in male NPT pipe with a cup x MNPT configuration. Used in plumbing and HVAC systems for joining tube to threaded pipe
Low-lead cast bronze sweat fitting elbow with 1/2 in CTS cup x 1/2 in CTS FTG connections. Used to join copper tubing to male threaded fittings in potable water and hydronic heating systems
NIBCO
Low-lead cast bronze sweat fitting elbow with 1/2 in CTS cup x 1/2 in CTS FTG connections. Used to join copper tubing to male threaded fittings in potable water and hydronic heating systems
This low-lead bronze tee connects three copper tubes of 3/4 in CTS via soldered cup joints. It is used for branching or merging flow in plumbing and hydronic systems where lead-free compliance is required
NIBCO
This low-lead bronze tee connects three copper tubes of 3/4 in CTS via soldered cup joints. It is used for branching or merging flow in plumbing and hydronic systems where lead-free compliance is required
This bulkhead tee is made from low-lead cast copper and bronze for corrosion resistance. It features a cup x cup x FNPT configuration with 1/2 in CTS copper sweat ends and a 3/4 in FNPT threaded outlet. Used in plumbing and HVAC systems to connect copper tubing and allow a branch line to pass through a tank or wall
NIBCO
This bulkhead tee is made from low-lead cast copper and bronze for corrosion resistance. It features a cup x cup x FNPT configuration with 1/2 in CTS copper sweat ends and a 3/4 in FNPT threaded outlet. Used in plumbing and HVAC systems to connect copper tubing and allow a branch line to pass through a tank or wall
This low-lead bronze tee features cup x cup x cup ends for sweat (solder) connection to copper tubing. It is used to branch a 1 1/4 in CTS line into 1/2 in and 1 in CTS runs in potable-water and hydronic systems
NIBCO
This low-lead bronze tee features cup x cup x cup ends for sweat (solder) connection to copper tubing. It is used to branch a 1 1/4 in CTS line into 1/2 in and 1 in CTS runs in potable-water and hydronic systems

More from NIBCO

View all NIBCO parts →
Low-lead bronze tube flange with 4-inch pipe size, cup x flange connection type. Designed for sweat (solder) installation onto copper tubing. Used to connect copper pipe to flanged equipment in plumbing, HVAC, and industrial systems requiring a flanged connection
NIBCO
Low-lead bronze tube flange with 4-inch pipe size, cup x flange connection type. Designed for sweat (solder) installation onto copper tubing. Used to connect copper pipe to flanged equipment in plumbing, HVAC, and industrial systems requiring a flanged connection
This low-lead cast bronze tube flange features a cup x flange connection, joining 1-1/2 in CTS copper tube to 1-1/2 in pipe. Used in plumbing and HVAC systems to connect copper tubing to flanged equipment, providing a leak-resistant transition for water or gas lines
NIBCO
This low-lead cast bronze tube flange features a cup x flange connection, joining 1-1/2 in CTS copper tube to 1-1/2 in pipe. Used in plumbing and HVAC systems to connect copper tubing to flanged equipment, providing a leak-resistant transition for water or gas lines
This low-lead bronze tube flange features a cup x flange configuration for connecting 1-inch CTS copper tube to 1-inch pipe. Suitable for potable water and hydronic heating systems, it provides a secure joint in plumbing applications
NIBCO
This low-lead bronze tube flange features a cup x flange configuration for connecting 1-inch CTS copper tube to 1-inch pipe. Suitable for potable water and hydronic heating systems, it provides a secure joint in plumbing applications
This low-lead cast copper and bronze tube flange features a cup x flange connection, designed for sweat/solder installation. It connects 1 in CTS copper tube to 1 in pipe, suitable for use in plumbing and HVAC systems for potable water, hydronic heating, and industrial fluid handling
NIBCO
This low-lead cast copper and bronze tube flange features a cup x flange connection, designed for sweat/solder installation. It connects 1 in CTS copper tube to 1 in pipe, suitable for use in plumbing and HVAC systems for potable water, hydronic heating, and industrial fluid handling
This wrot copper tube flange features a cup end for sweat (solder) connection to copper tubing and a flange end for bolting to flanged equipment. It is used in plumbing and HVAC systems to transition from copper tubing to threaded or flanged components. The fitting meets low-lead content requirements
NIBCO
This wrot copper tube flange features a cup end for sweat (solder) connection to copper tubing and a flange end for bolting to flanged equipment. It is used in plumbing and HVAC systems to transition from copper tubing to threaded or flanged components. The fitting meets low-lead content requirements
This low-lead cast bronze tube flange features a cup x flange design for connecting copper tubing to flanged equipment. The cup end accepts soldered joints, while the flange end allows bolted connections. Suitable for use in plumbing and industrial systems where a transition from tubing to flanged components is required
NIBCO
This low-lead cast bronze tube flange features a cup x flange design for connecting copper tubing to flanged equipment. The cup end accepts soldered joints, while the flange end allows bolted connections. Suitable for use in plumbing and industrial systems where a transition from tubing to flanged components is required
This wrot copper tube flange features a cup x flange design for connecting 1 1/2 in CTS copper tube to 1 1/2 in pipe. It is used in plumbing and HVAC systems for transitioning between tube and threaded pipe connections. The low-lead construction is suitable for solder connections
NIBCO
This wrot copper tube flange features a cup x flange design for connecting 1 1/2 in CTS copper tube to 1 1/2 in pipe. It is used in plumbing and HVAC systems for transitioning between tube and threaded pipe connections. The low-lead construction is suitable for solder connections
This low-lead cast bronze tube flange connects 3-inch CTS copper tube to a 3-inch pipe flange via a cup x flange connection. Suitable for use in potable water and hydronic heating systems, it provides a secure joint for plumbing applications
NIBCO
This low-lead cast bronze tube flange connects 3-inch CTS copper tube to a 3-inch pipe flange via a cup x flange connection. Suitable for use in potable water and hydronic heating systems, it provides a secure joint for plumbing applications