# Air compressor accessory Proline 66307 — air flow optimizer for compressor systems

**URL:** https://aio.lv/en/product--proline-5663078--10786477
**Data updated:** 2026-03-12 10:13 (EET)
**Category:** Air Compressors
**Manufacturer:** Proline
**Manufacturer code:** 5663078
**EAN:** 5903755663078
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 4.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-5663078--10786477

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 18.06.2026 | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

Proline 66307 is an air compressor accessory designed to optimize air flow in compressor systems. The unit is intended for integration with existing compressors to improve air delivery and flow stability. Use cases include workshop pneumatic tools, spray painting setups and general compressed-air installations where regulated and efficient air flow is required.

## Long description

Proline quick connector with valve for 8 mm diameter hoses designed for pneumatic systems. The connector provides a fast and secure connection for air supply components and is made from quality materials to ensure durability and long service life.
Advantages
The Proline quick connector features an integrated valve that prevents air loss during connection and disconnection. It is compatible with standard 8 mm pneumatic hoses and constructed from durable materials to resist wear and maintain reliable performance over time.
Suitable for
Connecting 8 mm pneumatic hoses
Air compressor accessory installations
Workshop and industrial pneumatic systems
Key specifications
Brand: Proline
Model / MPN: 5663078
EAN: 5903755663078
Designed hose diameter: 8 mm
Type: Quick connector with valve for pneumatic systems
How to use
Ensure the hose is clean and cut squarely, then push the 8 mm hose firmly into the connector until it seats. Connect the mating fitting or tool; the integrated valve will close when disconnected to minimize air loss. Inspect the connection for leaks after pressurizing the system and tighten or replace components if necessary.
Usage recommendations
Use with compatible 8 mm pneumatic hoses and within the pressure ratings of your pneumatic system; avoid using with damaged hoses or fittings and perform regular inspections for wear or leaks.

## Specifications

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Air compressor accessory Proline 66307 cost, and is it available for purchase?

The price is 4.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 280 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 18.06.2026 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 Proline 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 Proline 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/10786477/64449328_large.webp