UPONOR Barbed Fitting Coupling: 1/2 in ID x 3/4 in ID Size, Barbed x Barbed, Polymer
The UPONOR Barbed Fitting Coupling (MPN Q4775075) is an expansion polymer barbed tube fitting with a 1/2 in ID x 3/4 in ID size and barbed x barbed connection type. It uses an expansion PEX connection method, as…
SKU 3G-OTH-474179
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Product Description
The UPONOR Barbed Fitting Coupling (MPN Q4775075) is an expansion polymer barbed tube fitting with a 1/2 in ID x 3/4 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 Q4775075 used for?
The UPONOR Barbed Fitting Coupling Q4775075 connects two PEX pipes in plumbing and radiant heating systems. Its barbed x barbed design with expansion PEX connection method ensures a secure, leak-resistant joint in residential and commercial hydronic applications.
What are the specifications of the UPONOR Q4775075 coupling?
The UPONOR Q4775075 is a polymer barbed fitting coupling with 1/2 in ID x 3/4 in ID size and barbed x barbed connection type. It uses an expansion PEX connection method as specified by the manufacturer. The part number is Q4775075.
Where to buy the UPONOR Q4775075 coupling worldwide?
3G Electric supplies the UPONOR Q4775075 barbed fitting coupling to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this expansion polymer fitting.
How to install the UPONOR expansion PEX coupling?
To install the UPONOR expansion PEX coupling, expand the PEX tube end using an expansion tool, then insert the barbed fitting. As the PEX contracts, it forms a tight seal around the barbs. Follow UPONOR's instructions for proper expansion ring sizing and tool settings.
Used in
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 1/4 in ID x 3/4 in ID x 3/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4751377). 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%2F747fe269-c15a-4209-960a-f944fea44593.jpg&w=200)
![UPONOR Barbed Tee: 1 1/2 in ID x 1 1/4 in ID x 1 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4751531). 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%2F72c17990-5454-44a3-83f0-1e6de94cc898.jpg&w=200)
![UPONOR Barbed Fitting Coupling: 2 1/2 in ID x 2 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4772520). 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%2F6e9a91f0-9a07-410d-85c8-501c336191f9.jpg&w=200)
![UPONOR Barbed Tee: 1 1/2 in ID x 1 1/4 in ID x 1 1/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4751533). 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%2F6e2a8555-634a-4af3-b35c-e7c78d9f0d9e.jpg&w=200)
![UPONOR Barbed Tee: 2 in ID x 1 1/2 in ID x 1 1/2 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4752055). 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%2F6d029792-e1f9-46f7-a706-bf3385d7f97a.jpg&w=200)
![UPONOR Barbed Fitting Coupling: 1 in ID x 1 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4771010). 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%2F67abd646-0c29-4877-b9ef-99e94e23cb32.jpg&w=200)
![UPONOR Barbed Fitting Adapter: 3/4 in ID x 1 in Pipe Size, Barbed x NPSM, Polymer, Expansion (MPN WS4360750). 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%2F65e2ad55-cd69-4f41-8249-efb8bb77cf74.jpg&w=200)
![UPONOR Barbed Fitting Elbow: 2 1/2 in ID x 2 1/2 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4762500). 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%2F64d3ee53-ef87-4357-8ff6-42661735a980.jpg&w=200)