UPONOR Barbed Fitting Coupling: 1 1/2 in ID x 1 1/2 in ID Size, Barbed x Barbed
The UPONOR Barbed Fitting Coupling (MPN Q4771515) is a polymer expansion-type barbed x barbed tube fitting designed for 1 1/2 in ID x 1 1/2 in ID PEX connections. It uses an expansion connection method, making it…
SKU 3G-OTH-474126
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Product Description
The UPONOR Barbed Fitting Coupling (MPN Q4771515) is a polymer expansion-type barbed x barbed tube fitting designed for 1 1/2 in ID x 1 1/2 in ID PEX connections. It uses an expansion connection method, making it suitable for joining PEX tubing in industrial plumbing and hydronic systems.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the UPONOR Barbed Fitting Coupling Q4771515 used for?
The UPONOR Barbed Fitting Coupling Q4771515 is used to join two lengths of 1 1/2 in ID PEX tubing in industrial plumbing and hydronic heating systems. Its expansion connection method creates a secure, leak-resistant joint, making it suitable for potable water and radiant heating applications.
What are the specifications of the UPONOR Q4771515 coupling?
The UPONOR Q4771515 is a polymer barbed x barbed coupling for 1 1/2 in ID PEX tubing. It uses an expansion connection method. The fitting is manufactured by UPONOR and has a barbed x barbed connection type. It is designed for use in hydronic and plumbing systems.
Where to buy the UPONOR Q4771515 coupling worldwide?
3G Electric supplies the UPONOR Q4771515 coupling to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source and deliver genuine UPONOR fittings for your plumbing and hydronic projects.
How to install the UPONOR expansion coupling Q4771515?
To install the UPONOR Q4771515, first expand the PEX tubing end using an expansion tool. Immediately insert the barbed end of the coupling into the expanded tubing. The tubing will contract and form a tight seal around the barb. Ensure the tubing is fully seated before pressure testing.
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.


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