UPONOR Barbed Fitting Coupling: 2 1/2 in ID x 1 1/4 in ID Size, Barbed x Barbed
The UPONOR Barbed Fitting Coupling (MPN Q4772513) is a polymer expansion-type barbed x barbed tube fitting designed for PEX connections. It accommodates 2 1/2 in ID x 1 1/4 in ID sizes, using an expansion connection…
SKU 3G-OTH-474131
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Product Description
The UPONOR Barbed Fitting Coupling (MPN Q4772513) is a polymer expansion-type barbed x barbed tube fitting designed for PEX connections. It accommodates 2 1/2 in ID x 1 1/4 in ID sizes, using an expansion connection method. 3G Electric interprets demand and supplies this fitting across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
Frequently Asked Questions
What is the UPONOR Barbed Fitting Coupling Q4772513 used for?
The UPONOR Barbed Fitting Coupling Q4772513 is used to join PEX tubing in plumbing and hydronic heating systems. Its barbed x barbed design with expansion connection method creates a secure, leak-resistant joint for 2 1/2 in ID x 1 1/4 in ID sizes. 3G Electric supplies this fitting across 14 industrial departments.
What are the specifications of the UPONOR Q4772513 coupling?
The UPONOR Q4772513 is a polymer expansion-type barbed x barbed tube fitting. It accommodates 2 1/2 in ID x 1 1/4 in ID sizes and uses an expansion PEX connection method. The manufacturer part number is Q4772513, and the connection type is barbed x barbed. 3G Electric sources this UPONOR fitting for global delivery.
Where to buy the UPONOR Q4772513 coupling worldwide?
3G Electric supplies the UPONOR Q4772513 barbed fitting coupling to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance for international orders. Contact us to source this expansion polymer coupling for your PEX connection needs.
How to install the UPONOR expansion barbed fitting?
Install the UPONOR expansion barbed fitting by first expanding the PEX tube end with an expansion tool, then inserting the barbed end fully. The polymer material contracts around the barb for a secure seal. Always follow manufacturer guidelines for proper expansion ring use and pressure testing. 3G Electric provides sourcing support for this fitting.
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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: 2 in ID x 1 1/2 in ID x 3/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4752575). 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%2Fd1937cda-4841-405b-80c3-1f5a66a61730.jpg&w=200)
![UPONOR Barbed Fitting Coupling: 2 1/2 in ID x 2 1/2 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4772525). 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%2Fcf85fe5e-fee7-4b5d-9e61-23e7847623d4.jpg&w=200)
![UPONOR Barbed Tee: 1 1/2 in ID x 1 in ID x 1 1/2 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4751505). 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%2Fce099728-41e6-4d21-857f-1dba866bc38c.jpg&w=200)
![UPONOR Barbed Tee: 1 1/4 in ID x 1 1/4 in ID x 1 1/4 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4751313). 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%2Fcc92924a-58a4-4c50-a9e7-5cc93df53469.jpg&w=200)
![UPONOR Barbed Tee: 1 in ID x 3/4 in ID x 1 in ID Size, Barbed x Barbed x Barbed x Barbed, Polymer (MPN Q4751751). 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%2Fcc444112-0184-40b0-99f5-03cfc5e33b6b.jpg&w=200)
![UPONOR Barbed Fitting Plug: 1 in ID Size, Barbed, Polymer, Expansion (MPN Q4351000). 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%2Fcc2ed3a7-b413-4733-b4d0-19bb35139537.jpg&w=200)
![UPONOR Barbed Tee: 2 1/2 in ID x 2 in ID x 1 1/2 in ID Size, Barbed x Barbed x Barbed x Barbed (MPN Q4752525). 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%2Fcafefdf1-bd48-454e-9106-72f4ee49b15b.jpg&w=200)
![UPONOR Barbed Fitting Elbow: 2 in ID x 2 in ID Size, Barbed x Barbed, Polymer, Expansion (MPN Q4762000). 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%2Fca6ebabb-30db-422d-8d01-d9d197feb6f7.jpg&w=200)