# Air compressor accessory Proline 66305 — 1/2" connecting thread

**URL:** https://aio.lv/en/product--proline-5663054--10786471
**Data updated:** 2026-03-12 10:13 (EET)
**Category:** Air Compressors
**Manufacturer:** Proline
**Manufacturer code:** 5663054
**EAN:** 5903755663054
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 4.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-5663054--10786471

## 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 66305 is an air compressor accessory featuring a 1/2" connecting thread for attaching hoses, fittings or tools to compressors and pneumatic systems. Designed as a mechanical coupling component, it provides a standard connection interface for workshop and industrial air equipment, enabling secure hose joins and straightforward installation in pneumatic setups.

## Long description

Proline quick connector with valve and internal thread is designed for connecting components in pneumatic systems, providing a fast and secure connection between air supply elements. This connector features a 1/2" internal thread and is manufactured from quality materials to ensure durability and resistance to high pressure.
Advantages
The Proline quick connector offers a built-in valve for controlled disconnection and reduced air loss, a 1/2" internal thread for compatibility with standard fittings, and robust construction for longevity under frequent use and elevated pressure.
Suitable for
 Air compressor outlets and hoses
 Pneumatic tools and workshop equipment
 Industrial and maintenance air supply lines
 Quick-change connections in compressed air systems
Key specifications
 Brand: Proline
 Model / MPN: 5663054
 EAN: 5903755663054
 Thread type: 1/2" internal thread
 Accessory type: quick connector with valve
How to use
Ensure the mating fitting and thread are clean and undamaged. Screw the connector onto the corresponding 1/2" male thread until hand-tight, then use appropriate tools if required to achieve a secure fit without over-tightening. Connect the air hose or plug into the quick-connect side; the built-in valve will automatically control airflow during connection and disconnection. Verify there are no leaks before applying full system pressure.
Usage recommendations
Use this connector within the pressure range specified by your pneumatic system and inspect seals periodically. Replace the connector if threads or valve show signs of wear or damage. For safe operation, follow the compressor and tool manufacturers' guidelines.

## Specifications

| Feature | Value |
|---|---|
| Connecting thread | 1/2 |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Air compressor accessory Proline 66305 cost, and is it available for purchase?

The price is 5.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 287 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/10786471/64449318_large.webp