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UPONOR Barbed Fitting Plug: 1/2 in ID Size, Barbed, Polymer - Expansion Polymer Barbed Tube Fittings
UPONORExpansion Polymer Barbed Tube Fittings

UPONOR Barbed Fitting Plug: 1/2 in ID Size, Barbed, Polymer

The UPONOR Barbed Fitting Plug (MPN Q4350500) is a 1/2 in ID size, barbed, polymer, expansion-type tube fitting designed for PEX connections using the expansion method. As a trusted industrial solutions provider, 3G…

SKU 3G-OTH-474205

Brand
UPONOR
Item
Barbed Fitting Plug: 1/2 in ID Size, Barbed, Polymer
Category
Expansion Polymer Barbed Tube Fittings
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Technical Specifications

UPONOR
Manufacturer Part Number
Q4350500
Type
Barbed, Polymer, Expansion
[New] - PEX Connection Method
Expansion
View Full Spec Sheet

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UPONOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The UPONOR Barbed Fitting Plug (MPN Q4350500) is a 1/2 in ID size, barbed, polymer, expansion-type tube fitting designed for PEX connections using the expansion method. As a trusted industrial solutions provider, 3G Electric interprets customer demand and delivers this genuine UPONOR component across 14 industrial departments, with specialist depth in combustion, pumps, and controls ensuring accurate sourcing and support.

Frequently Asked Questions

What is UPONOR Barbed Fitting Plug used for?

The UPONOR Barbed Fitting Plug (MPN Q4350500) is used to seal the end of a PEX tube in expansion-type plumbing and hydronic heating systems. It provides a reliable, leak-proof closure in residential and commercial installations where a permanent or temporary stop is needed.

What are the specifications of UPONOR Barbed Fitting Plug Q4350500?

The UPONOR Barbed Fitting Plug has a 1/2 in inner diameter (ID) size, is made of polymer, and uses a barbed, expansion connection method for PEX tubing. The manufacturer part number is Q4350500. It is designed specifically for expansion-type PEX systems.

Where to buy UPONOR Barbed Fitting Plug Q4350500 worldwide?

3G Electric supplies the genuine UPONOR Barbed Fitting Plug Q4350500 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to place an order for this expansion polymer fitting.

How to install UPONOR Barbed Fitting Plug on PEX tubing?

To install the UPONOR Barbed Fitting Plug, use an expansion tool to expand the PEX tube end, then insert the plug fully until the barb seats. The polymer material contracts around the fitting for a secure seal. Always follow the manufacturer's instructions for proper expansion and insertion.

Used in

Common applications for UPONOR
Hydronic heating systems — Uponor manual two-way ball valves for flow isolation in PEX-based radiant heating loops
Water meter installation — Uponor water meter brass ball valves with PEX x NPSM connections for utility metering points
Plumbing maintenance — Uponor tube cutter for PEX used in cutting pipe during repair or retrofitting of water supply lines
Commercial building water distribution — Uponor angle ball valves for space-saving connections in mechanical rooms
Industrial process water — Uponor brass ball valves rated to 250 psi for shut-off in non-potable water lines

UPONOR 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 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.
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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.
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.
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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.
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.
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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.
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.
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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.
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.
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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.
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.
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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.
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.
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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.
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.
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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.