# SCHLOSSER radiator check valve DN15 1/2 x M22 x 1.5 GZ straight

**URL:** https://aio.lv/en/product--schlosser-601300008--11835929
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Heating Radiators
**Manufacturer:** SCHLOSSER
**Manufacturer code:** 601300008
**EAN:** 5901445014421
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--schlosser-601300008--11835929

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

SCHLOSSER radiator check valve, model 601300008, for DN15 (1/2") connections with M22 x 1.5 thread and GZ straight design. Designed to prevent backflow in heating systems, the valve suits radiator installations requiring a compact inline check solution. Suitable for residential and commercial radiators where DN15 connections and M22 fittings are used.

## Long description

SCHLOSSER radiator check valve DN15 1/2 x M22 x 1.5 GZ straight is a compact inline non-return valve engineered for radiator installations with DN15 (1/2") connections and M22 x 1.5 fittings. The straight GZ design allows direct inline mounting in supply or return lines to prevent backflow and maintain correct flow direction in heating circuits. Intended for use in both residential and commercial radiator systems, the valve provides a space-saving solution where a reliable one-way flow control is required.
Advantages
The check valve offers a compact straight-body configuration that simplifies installation in confined spaces. Constructed to fit standard DN15 radiator connections with M22 x 1.5 thread, it eliminates the risk of reverse flow and reduces the chance of system imbalance. Its simple mechanical design ensures low maintenance and reliable operation over time when installed correctly within compatible heating circuits.
Suitable for
 Radiator supply and return lines with DN15 (1/2") connections
 Heating systems using M22 x 1.5 fittings
 Residential and small commercial radiator installations
 Applications requiring a straight inline one-way valve to prevent backflow
Key specifications
 Connection size: DN15 (1/2")
 Thread type: M22 x 1.5
 Design: straight inline check / non-return valve
 Intended medium: heating system water
 Typical application: radiator piping
How to use
Install the SCHLOSSER radiator check valve in the direction of intended flow, ensuring the arrow or flow marking (if present) aligns with the system flow direction. Use appropriate sealing materials on threaded connections and tighten to the torque recommended for M22 fittings to avoid leaks or thread damage. After fitting, pressurize the system and check for proper one-way operation and absence of leaks before returning the system to normal service.
Usage recommendations
Fit the valve in accessible locations for inspection and ensure compatibility with system materials and operating temperatures. If the system contains significant particulate or corrosion products, install appropriate filters or strainers upstream to protect the valve mechanism. Follow system manufacturer guidelines for sealing and torque values when connecting M22 x 1.5 fittings.

## FAQ

### How much does the SCHLOSSER radiator check valve DN15 M22 cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 37 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. 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 SCHLOSSER 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 SCHLOSSER 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/11835929/67235647_large.webp