UPONOR Barbed Fitting Coupling: 1 1/2 in ID x 3/4 in ID Size, Barbed x Barbed
The UPONOR Barbed Fitting Coupling is an expansion polymer barbed tube fitting with a 1 1/2 in ID x 3/4 in ID size, featuring a Barbed x Barbed connection type and an Expansion PEX connection method (MPN Q4771507)…
SKU 3G-OTH-474028
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Product Description
The UPONOR Barbed Fitting Coupling is an expansion polymer barbed tube fitting with a 1 1/2 in ID x 3/4 in ID size, featuring a Barbed x Barbed connection type and an Expansion PEX connection method (MPN Q4771507). 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is the UPONOR Barbed Fitting Coupling Q4771507 used for?
The UPONOR Barbed Fitting Coupling Q4771507 connects two PEX pipes of different diameters — 1 1/2 in ID and 3/4 in ID — using an expansion method. It is commonly used in residential and commercial plumbing, radiant heating, and hydronic systems where a reliable, leak-resistant polymer coupling is required.
What are the specifications of the UPONOR Barbed Fitting Coupling Q4771507?
This UPONOR coupling has a 1 1/2 in ID x 3/4 in ID size, barbed x barbed connection type, and uses an expansion PEX connection method. It is made of polymer and carries the manufacturer part number Q4771507. The fitting is designed for use with PEX tubing in expansion-type systems.
Where to buy the UPONOR Barbed Fitting Coupling Q4771507 worldwide?
3G Electric supplies the UPONOR Barbed Fitting Coupling Q4771507 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time — we get you the right component, not just a catalog.
How to install the UPONOR Barbed Fitting Coupling Q4771507?
Installation requires an expansion tool compatible with UPONOR PEX systems. Slide the coupling onto the expanded pipe end, allow it to contract, then repeat for the second pipe. Ensure both pipe ends are clean and fully seated. Follow UPONOR's published guidelines for proper expansion and connection integrity.
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3G Electric supplies UPONOR expansion polymer 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 Coupling: 2 in ID x 1 1/2 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4772015). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F877a29d6-8815-4123-9c14-371ad13d6357.jpg&w=200)
![UPONOR Barbed Tee: 3 in ID x 3 in ID x 3 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4753000). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed x Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F86b0968f-6e1f-4d8d-92ef-393bcfab3e9b.jpg&w=200)
![UPONOR Barbed Fitting Elbow: 1 1/4 in ID x 1 1/4 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4761250). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F833adeab-1261-4369-830b-c5920c7a806b.jpg&w=200)
![UPONOR Barbed Tee: 1 1/2 in ID x 1 1/2 in ID x 1 1/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4751553). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed x Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F81c950b6-4e55-4ce8-987d-3b4e44e2e64f.jpg&w=200)
![UPONOR Barbed Fitting Elbow: 1 1/2 in ID x 1 1/2 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4761500). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F7f5ff0cf-1c76-4aae-af63-2b59e6274c7d.jpg&w=200)
![UPONOR Barbed Fitting Coupling: 1/2 in ID x 3/4 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4775075). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F7d1eff86-8c70-4c24-b502-8ce1b5c3fca9.jpg&w=200)
![UPONOR Barbed Tee: 3/4 in ID x 1/2 in ID x 1/2 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4757555). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x Barbed x Barbed x Barbed.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F7d0e5f56-90ce-4ef9-94d4-74f0be035e16.jpg&w=200)