# Barrow compression fitting THKN-3/8-B03 s — 13/10 mm, silver

**URL:** https://aio.lv/en/product--barrow-thkn-38-b03-s--5795715
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Barrow
**Manufacturer code:** THKN-3/8-B03 s
**EAN:** 6937826607370
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 6.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--barrow-thkn-38-b03-s--5795715

## 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 compression fitting THKN-3/8-B03 s is a silver-colored connector designed for 13/10 mm tubing. The fitting provides a compression-style seal for liquid cooling or fluid transfer systems, allowing secure pipe-to-component connections. Suitable for custom PC water loops and other applications that require a compression connector for 13/10 mm lines.

## Long description

Barrow compression fitting THKN-3/8-B03 s is a silver-coloured connector designed for 13/10 mm tubing. It creates a compression-style seal that secures tubing to components in liquid cooling loops and fluid transfer systems. The fitting is intended for applications that require a compact, metal compression connection for 13/10 mm soft or reinforced tubing, providing a neat external finish and a reliable mechanical hold.
Advantages
The fitting offers a metal compression design that improves durability and resistance to deformation compared with plastic alternatives. Its silver finish provides a neutral aesthetic that integrates well with a variety of system builds. The compression mechanism forms a tight seal without the need for glue or clamps, simplifying installation and maintenance while enabling leak-resistant connections when properly fitted.
Suitable for
Custom PC water cooling loops using 13/10 mm tubing
Small fluid transfer lines in electronics cooling or lab setups
Upgrading or replacing existing compression fittings in compact systems
Key specifications
Material: metal body with compression ring (silver finish)
Tube compatibility: 13 mm outer diameter / 10 mm inner diameter tubing
Connection type: compression-style seal for tube-to-component joints
Intended application: low-pressure liquid cooling and fluid transfer
Finish: silver (metallic)
How to use
Slide the compression nut and compression ring onto the tubing, insert the tube end fully into the fitting until it seats against the internal stop, then tighten the nut by hand and finish with a suitable spanner to achieve a firm compression seal. Do not overtighten; stop when the nut is snug and the tube is held securely. After installation, pressurize the system and inspect the joint for leaks, then retighten slightly if necessary.
Usage recommendations
Use compatible 13/10 mm tubing and ensure tube ends are cut square for best sealing performance. Periodically check fittings in systems subjected to thermal cycling or vibration. For initial leak testing, use low-pressure fluid or a controlled pressure source and inspect visually for any signs of seepage.

## FAQ

### How much does the Barrow compression fitting THKN-3/8-B03 s cost, and is it available for purchase?

The price is 7.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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/5795715/68546402_large.webp