# Automatic air vent Afriso G3/8" for solar installations, model 77900

**URL:** https://aio.lv/en/product--afriso-77900--11826006
**Data updated:** 2026-03-09 11:15 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** Afriso
**Manufacturer code:** 77900
**EAN:** 4016203779007
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 25.20 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--afriso-77900--11826006

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Automatic air vent Afriso G3/8" (model 77900) is designed for solar heating and hot-water circulation systems to remove entrapped air. The G3/8" threaded connection suits installation points on collectors, manifolds or piping. The device ensures continuous automatic venting to improve hydraulic performance and reduce noise and corrosion in solar installations.

## Long description

The Automatic air vent Afriso G3/8" for solar installations, model 77900 is designed to remove entrapped air from solar heating and hot-water circulation systems. The device features a G3/8" threaded connection suitable for installation on collectors, manifolds or piping. Continuous automatic venting improves hydraulic performance, reduces noise and helps limit corrosion by preventing persistent air pockets in the system.
Advantages
This automatic air vent provides continuous, maintenance‑free deaeration during normal system operation, helping to maintain steady flow and heat transfer efficiency. The compact design and standard G3/8" thread make it easy to fit at common high points in solar installations. By removing air automatically, the device reduces knocking and noise in pipes and lowers the risk of localized corrosion and pump cavitation.
Suitable for
Solar thermal collectors and collector loops
Hydraulic manifolds and distribution headers
Piping high points and risers in hot-water circulation systems
Closed-loop solar heating and domestic hot-water systems
Key specifications
Threaded connection: G3/8" suitable for standard fittings
Function: Automatic continuous air venting for liquid circuits
Application: Solar heating and hot-water circulation systems
Installation position: High points, manifolds, collectors or risers
Material: corrosion-resistant body (manufacturer design for solar use)
How to use
Install the air vent at system high points, on collectors or manifolds using the G3/8" threaded connection. Ensure the device is accessible for inspection and that the installation position allows trapped air to collect at the vent. Tighten to the recommended torque for the chosen fitting material and check for leaks after filling and pressurising the system. The unit vents automatically during normal operation; no manual actuation is required.
Usage recommendations
During commissioning, perform an initial purge of the system to remove bulk air before relying on the automatic vent for continuous fine deaeration. Periodically inspect the vent for signs of external leakage or damage and verify system pressure and flow to ensure proper operation.

## FAQ

### How much does the Afriso automatic air vent G3/8" model 77900 cost, and is it available for purchase?

The price is 30.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 08.07.2026 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 Afriso 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 Afriso 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/11826006/67227582_large.webp