UPONOR Barbed Fitting Adapter: 1 in ID x 1 1/4 in Pipe Size, Barbed x NPSM, Polymer
The UPONOR Barbed Fitting Adapter (MPN WS4361001) is an expansion polymer barbed tube fitting with a 1 in ID and 1 1/4 in pipe size, featuring a Barbed x NPSM connection type and an expansion PEX connection method…
SKU 3G-OTH-474044
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Product Description
The UPONOR Barbed Fitting Adapter (MPN WS4361001) is an expansion polymer barbed tube fitting with a 1 in ID and 1 1/4 in pipe size, featuring a Barbed x NPSM connection type and an expansion PEX connection method. 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.
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 Adapter WS4361001 used for?
The UPONOR Barbed Fitting Adapter WS4361001 connects 1 in ID PEX tubing to 1 1/4 in NPSM threaded ports in plumbing and hydronic heating systems. Its expansion PEX connection method creates a secure, leak-resistant joint. 3G Electric supplies this genuine component across 14 industrial departments, with specialist depth in pumps and controls.
What are the specifications of the UPONOR Barbed Fitting Adapter WS4361001?
The UPONOR Barbed Fitting Adapter WS4361001 has a 1 in inside diameter, fits 1 1/4 in pipe size, and uses a Barbed x NPSM connection type. It is made of polymer and employs an expansion PEX connection method. The manufacturer part number is WS4361001.
Where to buy the UPONOR Barbed Fitting Adapter WS4361001 worldwide?
3G Electric supplies the UPONOR Barbed Fitting Adapter WS4361001 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we interpret your demand and deliver the right component — not just a catalog.
How to install the UPONOR Barbed Fitting Adapter with expansion PEX?
For expansion PEX fittings like the UPONOR Barbed Fitting Adapter, expand the PEX tube end with an expansion tool, then insert the barbed adapter fully. The polymer material contracts around the tube for a secure seal. Always follow the manufacturer's instructions and use proper support for the connection.
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)