# Compression fitting Barrow THKN-3/8-V4 b, 16/10 (3/8" OD x 10mm ID), black

**URL:** https://aio.lv/en/product--barrow-thkn-38-v4-b--5795712
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Barrow
**Manufacturer code:** THKN-3/8-V4 b
**EAN:** 6937826615825
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--barrow-thkn-38-v4-b--5795712

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Barrow THKN-3/8-V4 b is a compression fitting for liquid cooling loops, sized 16/10 (3/8" outer diameter, 10 mm inner diameter) and finished in black. It provides a threaded compression connection to secure soft tubing to fittings or radiators, ensuring leak-resistant joins for PC water-cooling assemblies and custom cooling setups.

## Long description

Barrow THKN-3/8-V4 b is a compression fitting designed for PC liquid cooling systems. Sized 16/10 (3/8" outer diameter, 10 mm inner diameter) and finished in black, this fitting provides a threaded compression connection to securely join soft tubing to other fittings, water blocks, or radiators. The fitting is intended for standard soft tubing used in custom cooling loops and aims to create a tight, leak-resistant seal where tubing meets barbs or port threads.
Advantages
The compression design reduces the need for additional clamps while maintaining reliable tube retention. Its black finish offers a neutral, unobtrusive appearance that integrates with a wide range of case and component colors. The fitting's dimensions match common 16/10 soft tubing, ensuring compatibility with many aftermarket tubes and simplifying installation in custom water-cooling builds.
Suitable for
 Custom PC water-cooling loops using 16/10 (3/8" OD x 10 mm ID) soft tubing
 Connecting tubing to radiators, pumps, reservoirs, and water blocks
 Upgrading or replacing existing compression fittings in a liquid-cooling system
Key specifications
 Tubing outer diameter: 3/8" (approx. 9.5–10 mm)
 Inner diameter compatibility: 10 mm soft tubing
 Finish: black
 Connection type: threaded compression for soft tubing
 Material: metal body with sealing components (designed for liquid-cooling use)
How to use
Ensure the tubing end is cut cleanly and square. Slide the compression nut (if separate) onto the tubing, push the tubing firmly onto the mating barb or port until seated, then thread the compression fitting onto the port and tighten by hand before a final slight turn with a wrench to secure the seal. Do not overtighten, as excessive force can damage threads or deform tubing. After installation, inspect joints and run the cooling loop with the system filled and pressurized at low pump speed to check for leaks.
Usage recommendations
Use the fitting with compatible 16/10 soft tubing and standard liquid-cooling components. Replace sealing components if worn and perform a leak test after any maintenance or reconfiguration. Avoid using incompatible rigid tubing types that do not match the stated inner diameter.

## FAQ

### How much does the Barrow THKN-3/8-V4 b compression fitting 16/10 cost, and is it available for purchase?

The price is 9.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 43 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 16.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Barrow products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Barrow service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/5795712/65924195_large.webp