# Pump EK Water Blocks EK-Loop DDC 4.1 PWM Motor 12V 4.1 — Compact PWM-controlled DDC pump for water cooling

**URL:** https://aio.lv/en/product--ek-water-blocks-3831109911129--10771748
**Data updated:** 2026-02-12 22:07 (EET)
**Category:** Computer Component Accessories
**Manufacturer:** ek water blocks
**Manufacturer code:** 3831109911129
**EAN:** 3831109911129
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 71.49 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 59.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ek-water-blocks-3831109911129--10771748

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.08.2026 | free |
| Pickup points | 11.08.2026 | 1.89 EUR |
| Courier delivery to door | 11.08.2026 | 4.99 EUR |

## Summary description

EK Water Blocks EK-Loop DDC 4.1 PWM Motor 12V is a compact DDC-series pump with PWM speed control designed for custom PC water cooling loops. It runs on 12V and supports pulse-width modulation for precise flow adjustment. Suited for CPU/GPU loops and small reservoirs, it offers stable circulation, easy integration into custom builds, and predictable performance under varying loads.

## Long description

EK Water Blocks EK-Loop DDC 4.1 PWM Motor 12V is a compact DDC-series pump designed for custom PC water cooling loops. It operates on a 12V supply and includes PWM speed control for precise regulation of flow. The pump is intended for integration into CPU and GPU cooling circuits and small reservoirs, providing stable circulation and predictable performance across varying load conditions.
Advantages
The compact form factor simplifies installation in confined spaces while maintaining the hydraulic characteristics of a DDC-series pump. PWM control enables automatic adjustment of pump speed from the motherboard or a dedicated controller, allowing balance between cooling performance and noise. The 12V operation ensures compatibility with standard PC power systems and common fan headers that provide PWM signals.
Suitable for
 Custom CPU water cooling loops
 GPU and mixed-component water cooling circuits
 Small or compact reservoir setups
 Systems requiring PWM-based pump speed control
Key specifications
 Form factor: compact DDC-series pump design suitable for tight enclosures
 Power supply: 12V operation compatible with PC power systems
 Control method: PWM (pulse-width modulation) for speed regulation
 Typical application: circulation in custom liquid cooling loops for CPUs and GPUs
How to use
Mount the pump securely within the loop or on an appropriate bracket, ensuring correct inlet and outlet orientation according to your loop layout. Connect the 12V power and PWM control cable to a compatible motherboard header or controller that provides PWM signals. Prime the loop and fill with appropriate coolant, then run leak tests at low speeds before increasing to normal operating speeds. Adjust PWM duty cycle or fan curve in firmware or controller software to achieve the desired balance between flow rate and noise.
Usage recommendations
Use approved water-coolant solutions and maintain regular loop maintenance including checking fittings, coolant level, and cleaning to prevent debris accumulation. Avoid running the pump dry. For quieter operation, configure PWM curves to reduce speed at low thermal loads while ensuring sufficient flow for heat transfer under load.

## FAQ

### How much does the EK Water Blocks EK-Loop DDC 4.1 PWM Motor 12V pump cost, and is it available for purchase?

The price is 71.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 66 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 06.08.2026 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can EK Water Blocks EK-Loop DDC 4.1 PWM Motor 12V pump be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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

## Image

https://aio.lv/img/cache/product/10771748/68515567_large.webp