# Quick-disconnect Koolance QD3 fluid coupling, brass/chrome/stainless steel, black, 19×13 mm

**URL:** https://aio.lv/en/product--koolance-qd3-fs13x19-bk--1019586
**Data updated:** 2026-03-07 10:57 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Koolance
**Manufacturer code:** QD3-FS13X19-BK
**EAN:** 0829596909234
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 24.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koolance-qd3-fs13x19-bk--1019586

## 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 | 1.99 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Koolance QD3 is a quick-disconnect fluid coupling designed for liquid cooling systems. Constructed from brass, chrome and stainless steel with a black finish, it has a width of 19 mm, depth of 13 mm and weighs 100 g. The QD3 provides tool-free connection and disconnection of coolant lines, suitable for PC water-cooling loops and other small liquid-cooling applications.

## Long description

Koolance QD3 fluid coupling is a quick-disconnect female coupling engineered for liquid cooling systems. Constructed from brass, chrome and stainless steel with a black finish, this compact coupling has a 19 mm outside diameter, 13 mm inside diameter and a lightweight 100 g body. The QD3 female straight coupling uses a compression fitting and provides tool-free connection and disconnection while incorporating Koolance's patented no-spill automatic shutoff to limit coolant loss during separation.
Advantages
The QD3 coupling offers a one-handed, tool-free connection and disconnection designed specifically to mate with Koolance QD3 male counterparts. Its metal construction—brass with chrome and stainless steel components—ensures mechanical strength and corrosion resistance in typical PC water-cooling environments. The patented automatic shutoff minimizes fluid loss on disconnection to approximately 0.2–1 mL under low internal pressure, and the black finish provides a discreet appearance compatible with many system builds.
Suitable for
 PC custom water-cooling loops requiring quick-release connections
 External coolant reservoirs and test benches where frequent disconnection is needed
 Small liquid-cooling applications and laboratory setups using compatible QD3 male fittings
Key specifications
 Material: brass body with chrome and stainless steel components
 Finish: black
 Connection type: female straight quick-disconnect with compression fitting
 Internal diameter (ID): 13 mm (approx. 1/2 in)
 External diameter (OD): 19 mm (approx. 3/4 in)
 Operation: tool-free push/pull coupling with automatic shutoff
 Typical retained fluid on disconnection: ~0.2–1 mL at low internal pressures
 Weight: 100 g
How to use
Install the QD3 female coupling onto the coolant line using the compression fitting according to tubing manufacturer guidelines, ensuring a secure seal. To connect, align the female coupling with a compatible Koolance QD3 male quick-disconnect and push until it clicks into place. To disconnect, pull the ring on the female side; the internal automatic shutoff valves will close and restrict fluid flow so only a small volume of coolant is released. Follow normal system-drain procedures when removing the coupling under pressure and verify connections visually after reassembly.
Usage recommendations
Use the QD3 coupling only with compatible Koolance QD3 male fittings to ensure proper sealing and valve operation. Avoid disconnecting under high system pressure; internal pressure above approximately 0.5 kgf/cm² (7 psi) can increase the volume of fluid released. Periodically inspect fittings for signs of wear, corrosion, or damaged seals and replace parts if leakage is observed.

## Specifications

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Material | Brass, Chrome, Stainless steel |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.1 kg |
| Width | 19 mm |
| Depth | 13 mm |

## FAQ

### How much does the Koolance QD3 quick-disconnect coupling cost, and is it available for purchase?

The price is 29.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 Koolance 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 Koolance 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/1019586/57848488_large.webp