# Expansion Vessel Comap Contra-Flex 150 L, 1.5 L/mm? (label shows 150L/1.5) — 6 bar, 3/4" connection, red

**URL:** https://aio.lv/en/product--comap-16153--12073025
**Data updated:** 2026-03-12 21:52 (EET)
**Category:** Heating Radiators
**Manufacturer:** Comap
**Manufacturer code:** 16153
**EAN:** 8712874161535
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 228.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 189.25 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--comap-16153--12073025

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Closed expansion vessel Comap Contra-Flex for central heating systems, nominal capacity 150 L with 1.5 (label value), maximum working pressure 6 bar and 3/4" threaded connection. Designed to absorb thermal expansion and maintain system pressure in domestic or small commercial c.o. installations. Red enamel finish for corrosion protection; suitable for wall or floor mounting where space allows.

## Long description

Closed expansion vessel Comap Contra-Flex 150 L (label shows 150L/1.5) is designed for central heating systems to absorb thermal expansion and stabilise system pressure. With a nominal capacity of 150 litres and an indicated 1.5 value on the label, this red enamel-finished vessel is intended for domestic and small commercial central heating (c.o.) installations. It features a maximum working pressure of 6 bar and a 3/4" threaded connection, and can be installed either on a wall bracket or placed on the floor where space permits.
Advantages
The expansion vessel provides reliable pressure compensation during heating cycles, reducing the risk of overpressure events and frequent make-up water. Its red enamel finish offers corrosion resistance for typical heating system environments. The 3/4" threaded connection simplifies integration with existing piping, and the vessel's capacity is suitable for medium-sized domestic systems and smaller commercial installations. The construction allows flexible mounting options to accommodate different plant room layouts.
Suitable for
 Domestic central heating systems with up to medium heat output
 Small commercial or light-industrial heating installations
 Retrofit or replacement in existing closed heating circuits
 Systems requiring a 6 bar maximum working pressure vessel
Key specifications
 Nominal capacity: 150 litres (label indicates 1.5 value)
 Maximum working pressure: 6 bar
 Connection type: 3/4" threaded
 Finish: red enamel for corrosion protection
 Mounting: suitable for wall or floor installation depending on available space
How to use
Install the expansion vessel on the system supply or return pipework at a suitable location following local standards and manufacturer guidance. Secure the vessel using an appropriate wall bracket or position it on a stable floor surface. Connect the 3/4" threaded connection to the heating circuit using suitable fittings and ensure all joints are sealed and tightened to prevent leaks. Charge or check the pre-charge pressure according to the heating system design and adjust before filling the system. After installation, pressurise the heating circuit and verify that the vessel is functioning by observing system pressure during heating and cooling cycles.
Usage recommendations
Check and set the vessel pre-charge pressure (usually measured at the air valve) to match the static filling pressure of the heating system before commissioning. Periodically inspect for mechanical damage, corrosion of mounting points, and seal integrity. If the system requires a different capacity or higher working pressure, select an appropriately sized vessel to ensure reliable pressure management.

## FAQ

### How much does the Comap Contra-Flex expansion vessel 150 L cost, and is it available for purchase?

The price is 228.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 09.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Comap Contra-Flex expansion vessel 150 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/12073025/67557624_large.webp