# Check valve Herz RL-5 1/2 x 3/4" model 1374801

**URL:** https://aio.lv/en/product--herz-1374801--11699711
**Data updated:** 2026-03-08 08:45 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** Herz
**Manufacturer code:** 1374801
**EAN:** 9004174314209
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--herz-1374801--11699711

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Herz RL-5 check valve (model 1374801) with connection sizes 1/2 x 3/4". Designed to prevent backflow in heating and plumbing systems, this compact non-return valve ensures unidirectional fluid flow between mismatched threaded connections. Suitable for domestic and light commercial installations where reliable prevention of reverse flow is required.

## Long description

The Herz RL-5 check valve model 1374801 is a compact non-return valve designed to prevent backflow in heating and plumbing systems. With inlet and outlet thread sizes of 1/2" and 3/4" respectively, it enables reliable unidirectional flow between mismatched threaded connections. The valve is intended for integration into domestic and light commercial installations where protection against reverse flow and system contamination is required.
Advantages
The valve provides dependable backflow prevention in a small, robust housing suitable for tight installation spaces. Its threaded connections allow straightforward mechanical integration without adapting pipework, and the design minimises pressure drop while maintaining flow integrity. Made by a recognised manufacturer of HVAC and plumbing components, the product is engineered for longevity and routine maintenance compatibility.
Suitable for
Preventing reverse flow in domestic heating circuits
Protecting hot water and cold water lines from backflow
Use in small commercial plumbing where different thread sizes must be connected
Applications requiring a compact non-return valve for retrofit or new installations
Key specifications
Connection sizes: 1/2" × 3/4" threaded
Function: non-return (check) valve to allow unidirectional fluid flow
Typical application: heating and plumbing systems
Compact body suitable for limited-space installations
Material and finish suitable for potable water and heating circuits (manufacturer standard)
How to use
Install the valve in the pipe run with the arrow or flow direction pointing toward the outlet to ensure correct unidirectional operation. Use appropriate sealing tape or thread sealant on the threaded connections and tighten to the manufacturer's recommended torque to avoid leaks or thread damage. The valve should be mounted where it remains accessible for inspection and possible maintenance. Do not install the valve in locations where debris or heavy particulate matter can enter without adequate filtration.
Usage recommendations
Verify system compatibility before installation, including temperature and pressure ratings of the surrounding system components. Where necessary, fit strainers or filters upstream to protect the valve from sediment. Periodic inspection during routine system servicing will help maintain reliable operation.

## FAQ

### How much does the Herz RL-5 check valve 1/2 x 3/4" 1374801 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 — 3 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 13.07.2026 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 Herz 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 Herz 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

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