{{ totalProductsCount }}

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product Safety thermal relief valve CALEFFI 543513 for solid fuel boilers with dual temperature sensor 3/4"
158.99 €

Safety thermal relief valve CALEFFI 543513 for solid fuel boilers with dual temperature sensor 3/4"

Safety thermal valve CALEFFI 543513 3/4" Photo 1
Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

Safety thermal relief valve CALEFFI 543513 for solid fuel boilers with dual temperature sensor 3/4"

{{email}}
You keep track of price changes

Safety thermal relief valve CALEFFI 543513 for solid fuel boilers with dual temperature sensor 3/4"

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

Safety thermal relief valve CALEFFI model 543513 is designed for solid fuel boilers and features a dual temperature sensor and 3/4" connection. The valve provides thermal protection by releasing excess temperature or pressure to prevent overheating. Suitable for integration into heating circuits of residential and small commercial solid fuel boiler systems.
Available for order: 2 pcs.
Warranty: 2 Years
SKU: 11825875
free shipment

Cheapest with

Latvijas Pasts pakomāts

Pick-up points

Latvijas Pasts pakomāts

Cost

1.99 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
14.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
17.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts nodaļa
17.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
0 credit

pay in 3 equal parts

today

0 €

afterward

3 mth. х 53 €

overpayment

0 €

All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 4.42 euros per month
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

The CALEFFI safety thermal relief valve model 543513 is designed for solid fuel boilers and provides protection against overheating by releasing excess temperature or pressure. Equipped with a dual temperature sensor and a 3/4" threaded connection, this relief valve is intended for integration into heating circuits of residential and small commercial solid fuel boiler systems. The device responds to excessive temperature conditions, helping to maintain safe operation of the boiler and associated piping.

Advantages

This safety thermal relief valve features a dual temperature sensor for reliable detection of high temperatures and a compact 3/4" connection suitable for typical boiler fittings. The valve is engineered to activate automatically under excessive temperature or pressure, reducing the risk of damage to the boiler and the heating system. Constructed to meet functional requirements of solid fuel boiler installations, it supports straightforward integration and maintenance within existing circuits.

Suitable for (tasks / use cases)

  • Protection of residential solid fuel boilers against overheating
  • Integration into small commercial solid fuel boiler heating circuits
  • Safety backup in systems where temperature regulation is critical
  • Replacement or upgrade of thermal relief components in boiler installations

Key specifications

  • Application: safety thermal relief for solid fuel boilers
  • Sensor type: dual temperature sensor for enhanced detection
  • Connection size: 3/4" threaded connection
  • Operation: automatic activation on excessive temperature or pressure
  • Compatibility: designed for residential and small commercial heating circuits

How to use

Install the CALEFFI thermal relief valve into the boiler circuit at a location recommended by the boiler manufacturer and in accordance with local regulations. Connect the 3/4" threaded fitting to the designated port on the boiler or pipework, ensuring proper sealing and alignment. Verify that the dual temperature sensor is positioned as required for accurate temperature detection. After installation, perform pressure and leak tests and confirm the valve operates by testing under controlled conditions according to installation guidelines and safety standards.

Usage recommendations

Use the valve as part of a complete safety strategy: combine it with appropriate controls, expansion vessels and pressure relief devices, and follow the boiler manufacturer’s maintenance schedule. Regular inspection and testing are recommended to ensure reliable function and to replace the valve if signs of wear or corrosion appear.

Description

Machine translation. Load original

Similar products

{{product.title}} Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}
Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}

Customer reviews

Customer questions

FAQ

How much does the Safety thermal valve CALEFFI 543513 3/4" cost, and is it available for purchase?

The price is 158.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 14.07.2026 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 Safety thermal valve CALEFFI 543513 3/4" be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Safety thermal valve CALEFFI 543513 3/4" online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. 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.
shipping
Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
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.