# RECTUS connection fitting 3/4" x 13 mm model 13574

**URL:** https://aio.lv/en/product--rectus-13574--11737063
**Data updated:** 2026-03-08 13:39 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** RECTUS
**Manufacturer code:** 13574
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.49 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 11.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rectus-13574--11737063

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

RECTUS connection fitting model 13574 is a 3/4" threaded coupling designed for use with 13 mm tubing. It provides a secure mechanical join between threaded pipe connections and 13 mm lines, suitable for fluid or pneumatic installations. Typical applications include plumbing, heating circuits, and compressed air systems requiring a compact, threaded-to-tube transition.

## Long description

RECTUS connection fitting 3/4" x 13 mm model 13574 is a threaded coupling designed to join 3/4" threaded pipes to 13 mm tubing. Manufactured by RECTUS, this fitting creates a compact mechanical transition for fluid and pneumatic systems where a secure threaded-to-tube connection is required. The component is intended for installations such as plumbing, heating circuits, and compressed air lines, providing reliable coupling in confined spaces.
Advantages
The fitting offers a simple threaded interface for easy assembly with standard 3/4" pipe threads and a tailored connection for 13 mm tube, reducing the need for adapters. Its compact design saves space in densely packed installations and allows for straightforward integration into existing piping or tubing runs. The mechanical join provides a stable connection suitable for both fluid and pneumatic media when used according to system pressure and material compatibility.
Suitable for
Plumbing installations that require a 3/4" to 13 mm transition
Heating circuits and radiators where compact threaded connections are needed
Compressed air systems with 13 mm tubing runs
Repair or modification of existing pipe-to-tube connections
Key specifications
Thread size: 3/4" (threaded coupling side)
Tubing connection: 13 mm tube
Model: RECTUS 13574
Application domains: fluid lines, pneumatic lines, heating circuits
Form factor: compact threaded-to-tube coupling
How to use
Prepare the mating 3/4" threaded pipe and the 13 mm tubing by ensuring they are clean, deburred and free of contaminants. Screw the fitting into the 3/4" threaded connection using appropriate sealing method for the system (for example, thread sealant tape or liquid sealant where applicable) and insert or secure the 13 mm tube according to the tube connection method required by the fitting design. Tighten to the recommended torque for the thread size and system materials to achieve a leak-free mechanical joint. Verify compatibility of the fitting materials with the conveyed medium and test the assembled connection under working pressure before putting the system into regular operation.
Usage recommendations
Use appropriate thread sealing products and follow system pressure ratings. Do not exceed the pressure and temperature limits of the tubing and the fitting materials. For gas or critical fluid applications, perform pressure testing and periodic inspection to ensure ongoing integrity of the connection.

## FAQ

### How much does the RECTUS connection fitting 3/4" 13 mm 13574 cost, and is it available for purchase?

The price is 13.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 29.06.2026 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 RECTUS 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 RECTUS 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

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