# Flow indicator EKWB 3831109829721 — black/transparent, 1/4" connecting thread

**URL:** https://aio.lv/en/product--ekwb-3831109829721--4092144
**Data updated:** 2026-03-07 11:11 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** EKWB
**Manufacturer code:** 3831109829721
**EAN:** 3831109829721
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 77.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 64.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ekwb-3831109829721--4092144

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

EKWB flow indicator model 3831109829721 is an accessory for liquid cooling loops, featuring a black and transparent body and a 1/4" connecting thread. It visually indicates coolant flow within a PC cooling system, helping to verify pump operation and detect blockages or air pockets. Suitable for custom water-cooling setups and maintenance diagnostics.

## Long description

EKWB Flow Indicator 3831109829721 — black/transparent, 1/4" connecting thread is a compact visual monitoring accessory for custom liquid cooling loops. Designed for integration into PC cooling systems, the device shows coolant movement through a transparent acrylic chamber with an anodized black aluminium cover. The flow indicator helps confirm pump operation, detect blockages or trapped air and visually communicates loop status while matching the aesthetic of GPU water cooling components. It uses a 1/4" threaded connection and a top-to-bottom flow pattern; inlet and outlet ports are clearly labeled for correct installation.
Advantages
The flow indicator provides a clear visual cue of coolant circulation using a low-profile impeller with sloped wings and a closed centre to reduce air entrapment. Its anodized aluminium cover is colour-matched to common GPU water block backplates, offering uniform lighting across the housing by hiding LED hotspots. Two addressable LEDs inside the housing support D-RGB synchronization with major motherboard manufacturers. The unit is CNC-machined from cast acrylic for clarity and durability and features standard G1/4" threaded ports for compatibility with existing loop fittings.
Suitable for
Custom PC liquid cooling loops where visual flow confirmation is required
GPU-mounted cooling setups seeking aesthetic continuity with GPU backplates
Troubleshooting and maintenance to detect pump failure, blockages or air pockets
Systems using addressable D-RGB lighting for synchronized illumination
Key specifications
Type: Flow indicator for liquid cooling loops
Body materials: CNC-machined cast acrylic housing and anodized aluminium cover
Colour: Black anodized cover with transparent viewing chamber
Threads: G1/4" (1/4" standard threaded connections)
Flow pattern: Top-to-bottom orientation; ports are labeled for inlet and outlet
Impeller design: Closed centre with sloped wings to minimise air trapping
Lighting: Two addressable D-RGB LEDs; compatible with major motherboard RGB sync standards (3-pin, +5V alignment required)
How to use
Install the flow indicator inline in your loop using the G1/4" threaded ports, observing the labeled inlet and outlet to maintain the top-to-bottom flow orientation. Before powering the system, consult the manufacturer's manual to confirm correct port alignment and wiring for the addressable LED connector. Align the arrow on the 3‑pin D-RGB connector with the +5V marking on the motherboard header. After installation, fill and bleed the loop according to standard liquid cooling procedures, then verify visible impeller movement to confirm proper pump operation and unobstructed flow.
Usage recommendations
For reliable operation, ensure fittings are tightened to prevent leaks, route the D-RGB cable without sharp bends, and perform a controlled leak test before full system startup. Place the indicator where it is easily visible during initial filling and testing. Follow the manual for port orientation and LED wiring to avoid incorrect flow direction or lighting issues.

## Specifications

| Feature | Value |
|---|---|
| Connecting thread | 1/4 |

### Performance

| Feature | Value |
|---|---|
| Type | Flow indicator |

### Design

| Feature | Value |
|---|---|
| Product colour | Black, Transparent |

## FAQ

### How much does the Flow indicator EKWB 3831109829721 cost, and is it available for purchase?

The price is 77.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 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 20.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Flow indicator EKWB 3831109829721 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 EKWB 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 EKWB 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.

### Where can I download the instructions for Flow indicator EKWB 3831109829721?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/4092144/56540324_large.webp