# Safety Valve FERRO 1/2" 3.5 bar model 311.435

**URL:** https://aio.lv/en/product--ferro-311435--11836180
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** FERRO
**Manufacturer code:** 311435
**EAN:** 8016615003550
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ferro-311435--11836180

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

FERRO safety valve 1/2" 3.5 bar (model 311.435) is a pressure relief valve designed to open at a set pressure of 3.5 bar. It is intended for protection of heating and hot-water systems from overpressure. The valve features a 1/2" threaded connection and compact design for installation on boilers, boilers' piping, and circulation circuits to ensure safe pressure relief.

## Long description

FERRO safety valve 1/2" 3.5 bar model 311.435 is a pressure relief valve engineered to open at a set pressure of 3.5 bar. Designed for heating and hot-water systems, this compact valve provides controlled discharge of excess pressure to protect boilers, hot-water cylinders and circulation circuits. The valve has a 1/2" threaded connection for straightforward installation on boiler outlets, piping manifolds or branch lines where overpressure protection is required.
Advantages
The valve offers reliable pressure relief calibrated to 3.5 bar and a compact brass construction that fits standard 1/2" threaded connections. Its design enables fast reaction to overpressure conditions and steady long-term performance in closed heating and potable hot-water systems. The straightforward threaded fitting reduces installation time and allows placement close to the protected equipment for efficient venting.
Suitable for
Domestic and small commercial boilers and water heaters
Heating system manifolds and circulation loops
Hot-water storage tanks and indirect cylinders
Piping sections where overpressure protection is required
Key specifications
Set opening pressure: 3.5 bar
Connection type: 1/2" male threaded
Function: automatic pressure relief for heating and hot-water systems
Design: compact valve body suitable for installation on boilers and piping
Materials: corrosion-resistant metals suitable for heating system service
How to use
Install the safety valve on the system point designated for pressure relief, typically at the boiler outlet or on a manifold, using the 1/2" threaded connection. Ensure the valve is oriented according to the system’s flow and that any discharge outlet is directed to a safe drainage point. Do not obstruct the discharge path. After installation, pressurize the system and verify that the valve remains closed at normal operating pressure and opens at or near its 3.5 bar set point. Follow local regulations and manufacturer guidance for venting and testing.
Usage recommendations
Check compatibility with system fluids and temperatures before installation, and perform periodic inspections to confirm the valve seals and seat operate correctly. Replace the valve if there is visible corrosion, leakage, or if it fails to lift at the rated pressure during a controlled test.

## FAQ

### How much does the Safety Valve FERRO 1/2" 3.5 bar 311.435 cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 17.07.2026 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 FERRO 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 FERRO 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/11836180/67235869_large.webp