# Limit Box Varioterm Zestaw Limit Box RTL GZ3/4 (ZKORTL06)

**URL:** https://aio.lv/en/product--varioterm-zkortl06--11699918
**Data updated:** 2026-03-12 10:19 (EET)
**Category:** Control Systems
**Manufacturer:** Varioterm
**Manufacturer code:** ZKORTL06
**EAN:** 5903175066060
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 62.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 51.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--varioterm-zkortl06--11699918

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Limit Box Varioterm Zestaw Limit Box RTL GZ3/4 (MPN ZKORTL06) is a packaged control accessory for heating systems. Supplied as a set, it is intended for use with radiator thermostatic valves and related hydraulic circuits using G3/4 connections. The product is used to limit actuator travel or set end stops, enabling reliable temperature control and protecting valves and actuators in residential or commercial heating installations.

## Long description

Varioterm Zestaw Limit Box RTL GZ3/4 is a compact control accessory designed for hydraulic balancing and regulation in heating systems. The device integrates a mechanical limiting function with a straightforward mounting interface for 3/4-inch fittings, enabling precise flow limitation and protection of actuators and thermostatic valves in radiator and panel installations.
Advantages
The Limit Box RTL provides stable and repeatable flow limiting without electronic components, ensuring simple adjustment and long-term reliability. Its robust construction is suitable for domestic and commercial installations and reduces the need for repeated manual balancing. The product design supports easy integration into existing piping layouts and minimizes maintenance requirements.
Suitable for
Balancing hot water radiator systems
Limiting flow to thermostatic radiator valves
Integration with panel heating and low-temperature systems
Replacement or upgrade of hydraulic balancing accessories in renovation projects
Key specifications
Connection type: 3/4-inch threaded interface for standard fittings
Function: mechanical flow limiter for hydraulic balancing
Application: radiator and panel heating systems
Material: corrosion-resistant components suitable for potable water heating circuits
How to use
Install the Limit Box RTL in the supply or return line close to the radiator valve according to the piping layout. Secure the 3/4-inch threaded connections with appropriate sealant or tape and tighten to the recommended torque for your fittings. Adjust the mechanical limiter to the required flow setting following the installer guidance to achieve the desired balance across the heating circuit. After adjustment, check for leaks and verify correct operation of thermostatic valves under normal system conditions.
Usage recommendations
For reliable performance, commission the hydraulic balancing after system fill and air purging. Use a calibrated flow or differential pressure measurement during setup if precise balancing is required. Regular visual inspection during annual maintenance is recommended to confirm integrity and absence of leaks.

## FAQ

### How much does the Limit Box Varioterm Zestaw Limit Box RTL GZ3/4 cost, and is it available for purchase?

The price is 62.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 69 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 15.07.2026 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 Varioterm 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 Varioterm 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/11699918/67083119_large.webp