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header-product Safety Valve FERRO 1/2" 3.5 bar model 311.435
15.49 €

Safety Valve FERRO 1/2" 3.5 bar model 311.435

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

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Short 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.
Available for order: 17 pcs.
Warranty: 2 Years
SKU: 11836180
Manufacturer: FERRO
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
17.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
22.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
22.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Product information

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.

Description

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Customer reviews

Customer questions

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.