UPONOR Barbed Fitting Coupling: 3 in ID x 2 in ID Size, Barbed x Barbed, Polymer
The UPONOR Barbed Fitting Coupling (MPN Q4773020) is a polymer expansion barbed tube fitting with a 3 in ID x 2 in ID size and barbed x barbed connection type. It uses an expansion PEX connection method, as specified…
SKU 3G-OTH-474152
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Product Description
The UPONOR Barbed Fitting Coupling (MPN Q4773020) is a polymer expansion barbed tube fitting with a 3 in ID x 2 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 Q4773020 used for?
The UPONOR Barbed Fitting Coupling Q4773020 is used to join two PEX pipes of different diameters in plumbing and hydronic heating systems. Its 3 in ID x 2 in ID barbed x barbed design provides a secure, leak-resistant connection using the expansion PEX method.
What are the specifications of the UPONOR Q4773020 coupling?
The UPONOR Q4773020 is a polymer expansion barbed tube coupling with a 3 in ID x 2 in ID size and barbed x barbed connection type. It uses the expansion PEX connection method as specified by UPONOR. The manufacturer part number is Q4773020.
Where to buy the UPONOR Q4773020 coupling worldwide?
3G Electric supplies the UPONOR Q4773020 coupling to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this expansion polymer barbed fitting.
How to install the UPONOR expansion barbed coupling?
To install the UPONOR expansion barbed coupling, use an expansion tool to enlarge the PEX pipe end, then insert the barbed fitting. As the pipe contracts, it forms a tight seal around the barbs. Always follow UPONOR's instructions for proper expansion and insertion depth.
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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.


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![UPONOR Barbed Fitting Coupling: 1 1/2 in ID x 1 1/4 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4771513). 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%2F50e29906-4a2b-4d62-833b-27dd0d26904f.jpg&w=200)
![UPONOR Barbed Tee: 3/4 in ID x 3/4 in ID x 1 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4757710). 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%2F50092604-1812-4ce4-b146-ce3a570c71fe.jpg&w=200)
![UPONOR Barbed Tee: 3/4 in ID x 1/2 in ID x 3/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4757557). 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%2F4f655d46-2833-4d66-aba8-8eea37e7ecc1.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 1 in ID x 1 1/4 in Pipe Size, Barbed x NPSM, Polymer, Expansion (MPN WS4361001). Key specifications — [New] - PEX Connection Method: Expansion; Brand: UPONOR; Connection Type: Barbed x NPSM.](/img/p?u=https%3A%2F%2Foxalncjenpflyqfncuhe.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fproduct-assets%2Fgrainger%2F4d993bb7-aa22-444a-8c7b-6aff16a8e1f1.jpg&w=200)
![UPONOR Barbed Fitting Coupling: 1 1/2 in ID x 1 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4771510). 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%2F4d6089e2-a8cc-4527-99aa-ee239fcd229d.jpg&w=200)
![UPONOR Barbed Fitting Elbow: 3 in ID x 3 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4763030). 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%2F4c846549-e5d5-4f49-ae3b-06d659b3aa9c.jpg&w=200)