# Filling/Make-up Valve CALEFFI 553640 1/2" with Pressure Gauge

**URL:** https://aio.lv/en/product--caleffi-553640--11836104
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** CALEFFI
**Manufacturer code:** 553640
**EAN:** 5903624923562
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 72.99 €
**Prices and availability valid until:** 2026-07-07 23:59
**Price without VAT (21%):** 60.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--caleffi-553640--11836104

## 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

Automatic filling (make-up) valve CALEFFI model 553640, 1/2" connection, equipped with an integrated pressure gauge. Designed to automatically maintain system pressure by adding water to closed heating or plumbing systems. Suitable for residential and light commercial use where stable operating pressure and visual pressure monitoring are required.

## Long description

The CALEFFI Filling/Make-up Valve 1/2" with integrated pressure gauge is an automatic device designed to maintain and regulate pressure in closed heating and plumbing systems. It connects to the system via a 1/2" inlet and restores water to the circuit when pressure falls below the set level, while the built-in pressure gauge provides continuous visual monitoring of system pressure. The product is intended for residential and light commercial installations where stable operating pressure and straightforward pressure verification are necessary.
Advantages
This make-up valve combines automatic pressure maintenance with an integrated pressure gauge, reducing the need for separate components and simplifying installation. Its compact 1/2" connection is compatible with common domestic piping, and the integrated gauge allows quick visual checks without additional instrumentation. The unit is suitable for long-term use in closed systems and supports consistent system performance by preventing undervoltage and air ingress that can occur with low pressure.
Suitable for
 Domestic central heating systems requiring automatic pressure compensation
 Small commercial heating or hydronic systems with limited space
 Plumbing systems where visual pressure monitoring and automatic refilling are needed
 Retrofit projects replacing manual filling arrangements with automatic control
Key specifications
 Connection size: 1/2" suitable for standard domestic piping
 Function: automatic filling / make-up to maintain system pressure
 Built-in pressure gauge: provides direct visual indication of system pressure
 Application: closed heating and plumbing systems for residential and light commercial use
 Material and construction: corrosion-resistant components appropriate for potable water and heating circuits
How to use
Install the valve in the supply line to the closed system following pipe orientation and manufacturer installation best practices. Once connected, set the required system pressure according to the heating or plumbing system specifications; the valve will open automatically to admit water when pressure drops below the set threshold and close when the target pressure is reached. Monitor the built-in pressure gauge regularly to confirm correct operation and to detect any persistent pressure loss that may indicate a leak or other issue.
Usage recommendations
Verify compatibility with the system’s maximum allowable pressure and local regulations before installation. During commissioning, check for leaks and proper sealing at all connections. Periodic visual inspection of the pressure gauge and occasional functional checks of the valve mechanism will help ensure reliable operation; if persistent pressure loss or gauge malfunction is observed, consult a qualified technician.

## FAQ

### How much does the CALEFFI 553640 filling valve 1/2" with gauge cost, and is it available for purchase?

The price is 72.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 43 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, Installment. All transactions are 100% secure and encrypted.

### Can CALEFFI 553640 filling valve 1/2" with gauge 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 CALEFFI 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 CALEFFI 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/11836104/67235800_large.webp