# Safety Relief Valve CALEFFI 3/4" 2.5 bar (model 311525)

**URL:** https://aio.lv/en/product--caleffi-311525--11835840
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** CALEFFI
**Manufacturer code:** 311525
**EAN:** 8016615003635
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--caleffi-311525--11835840

## 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 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Safety relief valve by CALEFFI, model 311525, with 3/4" inlet/outlet and a set pressure of 2.5 bar. Designed to protect pressurized systems by discharging excess pressure automatically. Suitable for potable water and heating installations where overpressure protection at 2.5 bar is required. Compact metal construction for inline installation.

## Long description

Safety Relief Valve CALEFFI 3/4" 2.5 bar is a compact pressure relief device designed to protect closed pressurized systems by automatically discharging excess pressure when the set value of 2.5 bar is exceeded. Constructed in metal for durability, the valve features 3/4" inlet and outlet connections for straightforward inline installation in potable water and heating circuits where reliable overpressure protection is required.
Advantages
The valve provides consistent pressure protection at a fixed set point of 2.5 bar and operates automatically without external power. Its compact metal body offers mechanical strength and corrosion resistance appropriate for domestic and light commercial water and heating installations. The simple inline configuration with standard 3/4" connections enables fast replacement or integration into existing piping without special adapters. Maintenance is limited to occasional inspection and, if needed, replacement, keeping life-cycle costs low.
Suitable for
 Domestic hot water systems requiring overpressure protection at 2.5 bar
 Closed-loop heating installations such as radiators and underfloor heating
 Boiler circuits and small hydronic systems
 Applications where a compact, inline metal relief valve is preferred
Key specifications
 Set pressure: 2.5 bar
 Connection size: 3/4" inlet and outlet
 Construction material: metal body designed for durability
 Function: automatic pressure relief for closed systems
 Mounting: inline installation
How to use
Install the CALEFFI safety relief valve in the system line where overpressure protection is required, observing flow direction and ensuring correct 3/4" threaded connections. The valve must be fitted according to applicable plumbing codes and manufacturer installation practices, with access for inspection and discharge piping routed safely to a suitable drain if necessary. No electrical supply or manual actuation is required; the valve opens automatically when system pressure exceeds 2.5 bar and reseats as pressure falls below the set point. After installation, perform a pressure test to verify correct operation and check for leaks.
Usage recommendations
 For reliable operation, use the valve only within its intended media and pressure range, protect it from freezing and debris, and schedule periodic visual inspections. If the installation supplies potable water, ensure compatibility with drinking water regulations and flush the discharge outlet after activation. In professional installations, verify that discharge piping slopes to a safe drainage point and that local codes for overpressure relief devices are followed.

## FAQ

### How much does the Safety Relief Valve CALEFFI 311525 3/4" 2.5 bar cost, and is it available for purchase?

The price is 18.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 41 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 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/11835840/67235578_large.webp