We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RFQ CartGet a QuoteSign inSign up
ZURN Barbed Fitting Coupling: 1 1/8 in ID x 1 1/8 in ID Size, Barbed x Barbed - Expansion Rings for Barbed Tube Fittings
ZURNExpansion Rings for Barbed Tube Fittings

ZURN Barbed Fitting Coupling: 1 1/8 in ID x 1 1/8 in ID Size, Barbed x Barbed

The ZURN Barbed Fitting Coupling (MPN QER5X) is an expansion ring for barbed tube fittings, featuring a 1 1/8 in ID x 1 1/8 in ID size with a Barbed x Barbed connection type for PEX. It uses an Expansion PEX…

SKU 3G-OTH-485731

Brand
ZURN
Item
Barbed Fitting Coupling: 1 1/8 in ID x 1 1/8 in ID Size, Barbed x Barbed
Category
Expansion Rings for Barbed Tube Fittings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

ZURN
Manufacturer Part Number
QER5X
Type
Barbed x Barbed, PEX, Expansion
Connection Type
Barbed x Barbed
[New] - PEX Connection Method
Expansion
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The ZURN Barbed Fitting Coupling (MPN QER5X) is an expansion ring for barbed tube fittings, featuring a 1 1/8 in ID x 1 1/8 in ID size with a Barbed x Barbed connection type for PEX. It uses an Expansion PEX connection method, supplied by 3G Electric across 14 industrial departments with specialist depth in combustion, pumps and controls.

Frequently Asked Questions

What is the ZURN QER5X barbed fitting coupling used for?

The ZURN QER5X expansion ring is used to create secure PEX pipe connections in plumbing and hydronic heating systems. It joins two PEX tubes of the same size using a barbed x barbed design with an expansion method, ensuring a reliable, leak-resistant joint.

What are the specifications of the ZURN QER5X coupling?

The ZURN QER5X is a barbed fitting coupling with a 1 1/8 in ID x 1 1/8 in ID size, barbed x barbed connection type, and expansion PEX connection method. It is manufactured by ZURN under MPN QER5X and is suitable for PEX tubing systems.

Where to buy the ZURN QER5X expansion ring worldwide?

3G Electric supplies the ZURN QER5X expansion ring to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for international orders, ensuring you receive genuine ZURN components for your PEX plumbing projects.

How to install the ZURN QER5X barbed fitting coupling?

To install the ZURN QER5X, slide the expansion ring onto the PEX tube, expand the tube using an approved expansion tool, then insert the barbed fitting. The ring contracts as the tube cools, creating a tight seal. Always follow manufacturer guidelines for proper tool use and sizing.

Used in

Common applications for ZURN
Commercial restrooms — ZURN AquaVantage® automatic flush valves (ZER6000AV series) for water-efficient toilet flushing
Institutional kitchens — ZURN cast iron floor drains (ZN415 series) for heavy-duty drainage in food preparation areas
Industrial washdown areas — ZURN height-adjustable PVC floor drains (EZ1 series) for chemical-resistant drainage
Hospital patient rooms — ZURN dome strainers (P1910 series) for floor sink drainage in sanitary environments
Office building maintenance — ZURN chrome-plated brass P-traps (ZR365B-PC) for sink trap replacements
Urinal retrofit projects — ZURN ZTR sensor flush valve retrofit kits (ZTR6203 series) for upgrading manual urinal flush valves

ZURN Products

3G Electric supplies ZURN expansion rings for barbed tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from ZURN

View all ZURN parts →
ZURN Barbed Fitting Coupling: 1/2 in ID x 1/2 in ID Size, Barbed x Barbed, PEX, Expansion (MPN QER3X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN; Connection Type: Barbed x Barbed.
ZURN
ZURN Barbed Fitting Coupling: 1/2 in ID x 1/2 in ID Size, Barbed x Barbed, PEX, Expansion (MPN QER3X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN; Connection Type: Barbed x Barbed.
ZURN Barbed Fitting Coupling: 1 41/64 in ID x 1 1/2 in Pipe Size, Polymer, Expansion (MPN QER7X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN
ZURN Barbed Fitting Coupling: 1 41/64 in ID x 1 1/2 in Pipe Size, Polymer, Expansion (MPN QER7X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN Barbed Fitting Coupling: 7/8 in ID x 7/8 in ID Size, Barbed x Barbed, PEX, Expansion (MPN QER4X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN; Connection Type: Barbed x Barbed.
ZURN
ZURN Barbed Fitting Coupling: 7/8 in ID x 7/8 in ID Size, Barbed x Barbed, PEX, Expansion (MPN QER4X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN; Connection Type: Barbed x Barbed.
ZURN Barbed Fitting Coupling: 1 25/64 in ID x 1 1/4 in Pipe Size, Polymer, Expansion (MPN QER6X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN
ZURN Barbed Fitting Coupling: 1 25/64 in ID x 1 1/4 in Pipe Size, Polymer, Expansion (MPN QER6X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN Barbed Fitting Coupling: 31/64 in ID x 3/8 in Pipe Size, Polymer, Expansion (MPN QER2X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN
ZURN Barbed Fitting Coupling: 31/64 in ID x 3/8 in Pipe Size, Polymer, Expansion (MPN QER2X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN Barbed Fitting Coupling: 2 5/32 in ID x 2 in Pipe Size, Polymer, Expansion (MPN QER8X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.
ZURN
ZURN Barbed Fitting Coupling: 2 5/32 in ID x 2 in Pipe Size, Polymer, Expansion (MPN QER8X). Key specifications — [New] - PEX Connection Method: Expansion; Brand: ZURN.