# Straight Coupling with Half-Nut Herz P702081 20x2 to G3/4 Cone Seal

**URL:** https://aio.lv/en/product--herz-p702081--11825578
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** Herz
**Manufacturer code:** P702081
**EAN:** 9004174148101
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--herz-p702081--11825578

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Straight coupling (connector) Herz P702081 designed for joining a 20x2 pipe to a G3/4 threaded connection. Features a half-nut design and cone (stożkowe) seal for a pressure-tight mechanical joint. Suitable for plumbing and heating installations where a reliable transition from metric pipe dimensions to G3/4 fittings is required.

## Long description

Straight coupling Herz P702081 20x2 to G3/4 Cone Seal is a mechanical connector designed to join a 20x2 metric copper or multilayer pipe to a G3/4 threaded fitting. The coupling uses a half-nut clamping design and a conical (cone) seal to provide a pressure-tight connection suitable for plumbing and heating systems. It is intended for applications requiring a reliable transition from pipe outer dimensions to the G3/4 standard thread while maintaining leak-free performance under typical domestic and light commercial operating conditions.
Advantages
The half-nut design allows straightforward assembly and secure mechanical grip on the pipe without the need for soldering. The cone seal provides a tight, pressure-resistant joint that reduces the risk of leaks at the thread interface. Compact straight form factor keeps the connection line neat and minimizes space requirements. Manufactured by Herz, the coupling is compatible with common 20x2 pipes and standard G3/4 fittings used in heating and plumbing works.
Suitable for
Connecting 20x2 copper or multilayer pipes to G3/4 threaded valves and fittings
Domestic and light commercial heating system installations
Plumbing repairs and retrofits that require metric-to-G3/4 transitions
Points where a pressure-tight mechanical joint is preferred over soldering or adhesive methods
Key specifications
Connection type: straight coupling with half-nut and cone seal
Pipe compatibility: 20x2 (outer diameter 20 mm, wall thickness 2 mm)
Threaded side: G3/4 standard thread
Seal type: conical (cone) pressure seal
Typical applications: plumbing and heating installations
How to use
Prepare the pipe end by cutting square and deburring to ensure proper seating. Slide the coupling half-nut over the pipe, position the cone seal against the pipe end and screw the coupling onto the G3/4 fitting by hand to start. Tighten the half-nut to the specified torque using appropriate tools until the cone seal engages and creates a pressure-tight joint. Verify alignment and check for leaks under system pressure before completing installation. Follow any system-specific guidelines for torque and installation clearances.
Usage recommendations
Use with clean, undamaged pipe ends and compatible G3/4 fittings. Do not overtighten beyond recommended torque to avoid deforming the cone seal or pipe. Inspect the joint after initial pressurization and periodically during system commissioning to ensure long-term integrity.

## FAQ

### How much does the Herz P702081 Straight Coupling 20x2 to G3/4 cost, and is it available for purchase?

The price is 6.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 61 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 15.07.2026 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

https://aio.lv/img/cache/product/11825578/67227252_large.webp