UPONOR Barbed Fitting Elbow: 1/2 in ID x 1/2 in Pipe Size, Barbed x MNPT, Brass
The UPONOR Barbed Fitting Elbow is a brass expansion barbed tube fitting with a 1/2 in ID x 1/2 in Pipe Size, featuring a Barbed x MNPT connection type and an expansion PEX connection method (MPN LF4125050). 3G…
SKU 3G-OTH-467918
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Product Description
The UPONOR Barbed Fitting Elbow is a brass expansion barbed tube fitting with a 1/2 in ID x 1/2 in Pipe Size, featuring a Barbed x MNPT connection type and an expansion PEX connection method (MPN LF4125050). 3G Electric interprets this demand and delivers it across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor for brands including UPONOR, Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump and FBR.
Frequently Asked Questions
What is the UPONOR Barbed Fitting Elbow used for?
The UPONOR Barbed Fitting Elbow connects PEX tubing to male NPT threaded ports in plumbing and hydronic heating systems. Its brass construction and expansion PEX connection method provide a reliable, leak-resistant joint for potable water and radiant heating applications.
What are the specifications of the UPONOR Barbed Fitting Elbow LF4125050?
This UPONOR fitting is a brass barbed elbow with a 1/2 in ID x 1/2 in Pipe Size, Barbed x MNPT connection, and expansion PEX connection method. The manufacturer part number is LF4125050. It is designed for use with expansion-type PEX tubing.
Where to buy the UPONOR Barbed Fitting Elbow worldwide?
3G Electric supplies the UPONOR Barbed Fitting Elbow LF4125050 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this brass expansion fitting.
How to install the UPONOR Barbed Fitting Elbow with expansion PEX?
Installation requires an expansion tool to enlarge the PEX tube end, then insert the barbed fitting before the tube contracts around it. Ensure the tube is fully seated against the shoulder. Follow UPONOR's guidelines for proper expansion ring sizing and tool calibration.
Used in
Common applications for UPONORUPONOR Products
3G Electric supplies UPONOR expansion brass barbed tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.


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![UPONOR Barbed Fitting Adapter: 2 in ID x 2 in Pipe Size, Barbed, Brass, Expansion (MPN CP4512020). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2Fd111a962-8b56-49e0-8ba0-f38745b71f0b.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 3/4 in ID x 1 in Pipe Size, Barbed x NPT, Brass, Expansion (MPN LF4577510). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x NPT.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2Fd01a3668-c171-40ca-b95d-d926c3742e1f.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 2 in ID x 2 in Pipe Size, Barbed x NPT, Brass, Expansion (MPN LF4522020). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x NPT.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2Fc95802ac-153d-42d3-9287-a9679e6a59a0.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 2 in ID x 2 in Pipe Size, Barbed, Brass, Expansion (MPN CP4502020). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2Fc8dd4044-daa5-485f-8731-b3324e10ab96.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 2 in ID x 2 in Pipe Size, Barbed x Press-fit, Brass/Copper, Expansion (MPN LFP4512020). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Press-fit.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2Fc5aef166-d79e-4442-a909-841591c373be.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 1 in ID x 1 in Pipe Size, Barbed x Cup, Brass/Copper, Expansion (MPN LF4511010). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Cup.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2Fc42793cc-53ad-48ba-8066-ac4bcf4cdf8d.jpg&w=200)