# Afriso differential pressure relief valve DU adjustable angled 3/4" x 3/4" (42379)

**URL:** https://aio.lv/en/product--afriso-42379--11836423
**Data updated:** 2026-03-09 14:50 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Afriso
**Manufacturer code:** 42379
**EAN:** 5902510002060
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--afriso-42379--11836423

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

Differential pressure relief valve Afriso DU (model 42379) in angled design with adjustable setpoint, connection size 3/4" x 3/4". Used to limit pressure differences in heating and cooling systems, protect pumps and control hydraulic balance. Suitable for installation in domestic and commercial hydronic circuits where stable pressure differential is required.

## Long description

The Afriso differential pressure relief valve DU in angled design is a compact hydraulic accessory for hydronic heating and cooling systems. The adjustable valve limits and stabilizes pressure differences across pumps, circuits and control valves, helping to maintain hydraulic balance in domestic and commercial installations. The 3/4" x 3/4" connection format allows straightforward integration into existing pipework where a consistent differential pressure is required.
Advantages
This angled differential pressure relief valve provides a user-adjustable setpoint to respond to varying system demands. Its compact form factor and angled body simplify installation in tight spaces and allow convenient orientation relative to piping. The design reduces the risk of pump overload and hydraulic noise by preventing excessive differential pressures, and it supports more reliable operation of thermostatic and motorized control valves.
Suitable for
Domestic and small commercial heating systems
Hydronic cooling circuits
Protection of circulation pumps and control valves
Systems requiring stable differential pressure for balancing
Key specifications
Connection size: 3/4" x 3/4" (angled configuration)
Type: adjustable differential pressure relief valve
Installation orientation: angled body for flexible piping alignment
Primary function: limit and stabilize differential pressure in hydronic circuits
Application: heating and cooling systems, pump and valve protection
How to use
Install the valve in the return or feed line where differential pressure control is required, observing flow direction marked on the body. Use standard threaded connections for 3/4" piping and ensure appropriate sealing on joints. Adjust the setpoint according to system design or manufacturer guidance to achieve the desired differential pressure; fine tuning may be required during commissioning. Perform periodic inspections for leaks and correct operation as part of routine system maintenance.
Usage recommendations
To ensure reliable performance, set the valve after the hydraulic layout and pump sizing are confirmed, and verify system balance during commissioning. Use compatible sealing materials for threaded connections and follow local regulations for hydronic installations. Regular maintenance checks will help detect wear, debris or sealing issues that could affect differential pressure control.

## FAQ

### How much does the Afriso differential pressure valve DU 3/4" x 3/4" (42379) cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 30.07.2026 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 Afriso 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 Afriso 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/11836423/67236074_large.webp