# Fitting EK Water Blocks HDC 12

**URL:** https://aio.lv/en/product--ek-water-blocks-3831109823781--3717753
**Data updated:** 2025-12-29 13:46 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** ek water blocks
**Manufacturer code:** 3831109823781
**EAN:** 3831109823781
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.99 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 19.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ek-water-blocks-3831109823781--3717753

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.08.2026 | free |
| Pickup points | 07.08.2026 | 1.89 EUR |
| Courier delivery to door | 07.08.2026 | 4.99 EUR |

## Summary description

The EK Water Blocks HDC 12 fitting is made from durable brass with a stylish titanium finish. It has a height of 15 mm and a diameter of 2 cm, designed for tubes with a diameter of 1.2 cm. This fitting ensures a secure and leak-free connection in your water cooling system, providing both functionality and aesthetic appeal.

## Long description

The EK-Quantum Torque HDC 12 fitting is a 12mm hard-tube compression fitting from EK Water Blocks, machined from brass with a satin titanium finish. Designed for use with solid acrylic and PETG tubing, the fitting provides a low-profile, minimalistic look with no visible branding and a removable aesthetic color ring (sold separately). The fitting includes a rubber gasket and an internal locking ring that compresses the gasket to prevent the solid tube from being pulled out, and the outside grooves allow easier hand tightening.
Advantages
The fitting combines CNC-machined brass construction with a satin surface finish and quality rubber O-rings to ensure durable, leak-resistant connections for 12mm hard tubing. A 9mm hex socket in the barb facilitates installation with an Allen key to protect fingertips while tightening, and the compression ring features cutouts to showcase interchangeable colored aesthetic rings. The interior is left unpainted to minimise potential contaminants in the coolant loop.
Suitable for
12 mm (HDC) hard tubing systems using Acrylic or PETG
Custom PC water cooling loops requiring low-profile, minimal fittings
Builds where aesthetic customization with colored rings is desired
Key specifications
Brand: EK Water Blocks
Model: EK-Quantum Torque HDC 12
Material: CNC-machined brass
Finish: Satin Titanium (externally); interior intentionally unpainted
Tube compatibility: 12 mm hard tubing (Acrylic, PETG)
Height: 15 mm
Diameter: 20 mm
MPN / EAN: 3831109823781
How to use
Fit the 12mm hard tube into the barb until it seats against the internal stop. Screw the compression locking ring down to compress the rubber gasket and secure the tube. For improved grip and to avoid fingertip injury, insert a 9mm Allen key into the hex pattern inside the barb when tightening; the Allen key is sold separately. Do not apply excessive force with the Allen key to prevent damage to the fitting or adjacent cooling components.
Usage recommendations
Use only compatible 12mm Acrylic or PETG hard tubing and check O-rings periodically for wear. Colored aesthetic rings are sold separately and should be installed before the compression locking ring.

## Specifications

| Feature | Value |
|---|---|
| Diameter | 20 mm |
| Connecting thread | 1/4 |
| Tube 1 diameter | 12 mm |

### Performance

| Feature | Value |
|---|---|
| Type | Fitting |

### Design

| Feature | Value |
|---|---|
| Product colour | Titanium |
| Material | Brass |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 15 mm |

## FAQ

### How much does the Fitting EK Water Blocks HDC 12 cost, and is it available for purchase?

The price is 23.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 04.08.2026 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. 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 ek water blocks 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 ek water blocks 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: type, 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/3717753/64225736_large.webp