# Expansion Vessel Comap Contra-Flex 100 L, 1.5 bar pre-charge, 6 bar max, 3/4" connection, red

**URL:** https://aio.lv/en/product--comap-26103--12383914
**Data updated:** 2026-04-26 20:55 (EEST)
**Category:** Other goods
**Manufacturer:** Comap
**Manufacturer code:** 26103
**EAN:** 5905505286865
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 215.99 €
**Prices and availability valid until:** 2026-11-30 23:59
**Price without VAT (21%):** 178.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--comap-26103--12383914

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.11.2026 | free |
| Pickup points | 20.11.2026 | 1.99 EUR |
| Courier delivery to door | 20.11.2026 | 4.99 EUR |

## Summary description

Closed expansion vessel Comap Contra-Flex for central heating systems with 100 L capacity. Features a 1.5 bar factory pre-charge and 6 bar maximum working pressure, intended to absorb thermal expansion and stabilize system pressure. Equipped with a 3/4" connection and red corrosion-resistant coating. Suitable for residential and light commercial c.o. installations.

## Long description

Closed expansion vessel Comap Contra-Flex 100 L is designed for central heating (c.o.) systems to absorb thermal expansion and stabilize system pressure. The tank has a 100-litre capacity with a factory pre-charge of 1.5 bar and a maximum working pressure of 6 bar. It comes with a 3/4" threaded connection and a red corrosion-resistant coating for typical residential and light commercial heating installations.
Advantages
The Contra-Flex design separates the system fluid from the internal gas cushion, reducing oxidation and prolonging service life. A factory-set pre-charge of 1.5 bar enables immediate installation without initial pressurization steps for many home heating systems. The compact 100 L volume is suitable for single- and multi-loop domestic systems, while the 6 bar maximum rating provides a safety margin for varied system pressures. The red coating offers visual identification and additional surface protection against corrosion.
Suitable for
 Residential central heating systems (single- and multi-boiler installations)
 Light commercial or small apartment building heating circuits
 Systems requiring a 100 L expansion volume with a 3/4" connection
 Installations where a factory pre-charge of 1.5 bar is compatible with system static pressure
When it may not be suitable
This expansion vessel may not be suitable for high-pressure industrial systems that exceed the 6 bar maximum working pressure or for installations that require a different connection size than 3/4". Systems requiring a different pre-charge pressure or larger expansion volume should use a vessel matched to those specific parameters.
Key specifications
 Type: closed expansion vessel for central heating
 Capacity: 100 litres
 Factory pre-charge: 1.5 bar
 Maximum working pressure: 6 bar
 Connection size: 3/4" threaded
 Exterior finish: red corrosion-resistant coating
How to use
Mount the vessel at an appropriate location on the heating circuit where it can be accessed for inspection and maintenance. Ensure the system is depressurized and drained locally before making the connection. Fit the 3/4" threaded connection to the system pipework using suitable sealing methods and torque values recommended by the installer or local regulations. After installation, refill and pressurize the heating system, check the vessel pre-charge with a pressure gauge and adjust only if required to match system static pressure. Carry out leak checks and monitor system pressure during the initial heat-up cycle.
What to consider before purchase
 Confirm the vessel capacity (100 L) is appropriate for the total system volume and heat output
 Verify that the factory pre-charge of 1.5 bar suits the system static pressure or whether recharging is needed
 Check that the 3/4" connection matches your piping and fittings
 Ensure the maximum working pressure of 6 bar is sufficient for your installation
Usage recommendations
For reliable operation, inspect the expansion vessel periodically for external corrosion or damage, verify the pre-charge pressure annually, and ensure system water quality to reduce corrosion and sediment that can affect vessel performance.

## FAQ

### How much does the Comap Contra-Flex expansion vessel 100 L cost, and is it available for purchase?

The price is 215.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 25 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 16.11.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Comap Contra-Flex expansion vessel 100 L be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Comap 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 Comap 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/12383914/70729133_large.webp