UPONOR Barbed Fitting Coupling: 1 1/4 in ID x 1 in ID Size, Barbed x Barbed, Polymer
The UPONOR Barbed Fitting Coupling (MPN Q4771310) is a polymer expansion barbed tube fitting with a 1 1/4 in ID x 1 in ID size and barbed x barbed connection type. It uses an expansion PEX connection method, as…
SKU 3G-OTH-474190
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Product Description
The UPONOR Barbed Fitting Coupling (MPN Q4771310) is a polymer expansion barbed tube fitting with a 1 1/4 in ID x 1 in ID size and barbed x barbed connection type. It uses an expansion PEX connection method, as specified by the manufacturer.
Frequently Asked Questions
What is the UPONOR Barbed Fitting Coupling Q4771310 used for?
The UPONOR Barbed Fitting Coupling Q4771310 connects two PEX pipes in plumbing and radiant heating systems. Its barbed x barbed design and expansion PEX connection method create a secure, leak-resistant joint in potable water and hydronic applications.
What are the specifications of the UPONOR Q4771310 coupling?
The UPONOR Q4771310 is a polymer barbed coupling with a 1 1/4 in ID x 1 in ID size and barbed x barbed connection type. It uses the expansion PEX connection method as specified by UPONOR, making it suitable for PEX-a systems.
Where to buy the UPONOR Q4771310 coupling worldwide?
3G Electric supplies the UPONOR Q4771310 coupling worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this expansion polymer fitting.
How to install the UPONOR expansion barbed coupling?
Install the UPONOR Q4771310 coupling by expanding the PEX-a pipe end with an expansion tool, then inserting the barbed fitting. As the pipe contracts, it forms a tight seal around the barbs. Always follow UPONOR's instructions and use compatible PEX-a tubing.
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Common applications for UPONORUPONOR Products
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.


![UPONOR Barbed Tee: 1/2 in ID x 1/2 in ID x 3/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4755575). 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%2F003cb1c2-e034-46a8-8f7b-a86ee99653eb.jpg&w=200)
![UPONOR Barbed Tee: 1 in ID x 1 in ID x 1/2 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4751150). 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%2Fff8644e9-b59f-4c67-815f-35fff82057ac.jpg&w=200)
![UPONOR Barbed Tee: 3 in ID x 3 in ID x 1 1/2 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4753315). 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%2Ffc225f61-93a2-481f-9d88-234443efb816.jpg&w=200)
![UPONOR Barbed Tee: 2 1/2 in ID x 2 in ID x 2 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4752522). 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%2Ff6008672-a30f-49ff-898e-b0285bf91b82.jpg&w=200)
![UPONOR Barbed Tee: 2 in ID x 1 in ID x 1 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4752110). 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%2Ff56437e4-8cc3-462d-ab2d-d432aa1fe1b1.jpg&w=200)
![UPONOR Barbed Fitting Coupling: 2 1/2 in ID x 1 1/4 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4772513). 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%2Ff333bf40-d71d-4a8c-b29c-1ffc4a5b81e9.jpg&w=200)
![UPONOR Barbed Tee: 3 in ID x 3 in ID x 1 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4753310). 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%2Fefb4dc49-1d37-4743-82ec-d92aa0ac93b4.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 1 in ID x 1 in Pipe Size, Barbed x NPT, Polymer, Expansion (MPN Q4621010). 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%2Feada7187-17bc-4787-a582-3e18c768a7c4.jpg&w=200)