# Differential pressure regulator Herz 30 kPa DN15

**URL:** https://aio.lv/en/product--herz-1420241--11836043
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Heating Radiators
**Manufacturer:** Herz
**Manufacturer code:** 1420241
**EAN:** 9004174016028
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 124.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 103.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--herz-1420241--11836043

## 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 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Differential pressure regulator by Herz, model 1420241, designed for maintaining a stable differential pressure of 30 kPa in DN15 pipe systems. Compact valve intended for hydronic heating and chilled-water circuits to prevent pressure fluctuations, reduce noise and protect control valves. Suitable for use in residential and light commercial installations where precise pressure control in small-diameter mains is required.

## Long description

The Differential pressure regulator Herz 30 kPa DN15 is a compact control valve designed for hydronic heating and chilled-water circuits where maintaining a stable differential pressure is important. Intended for use in DN15 pipe systems, the regulator keeps the pressure difference across terminal units or control valves at a constant 30 kPa, reducing pressure-induced noise, preventing unwanted flow fluctuations and protecting downstream control valves and actuators. The device is suitable for residential and light commercial installations that require reliable pressure balancing in small-diameter mains.
Advantages
The regulator provides precise differential pressure control at 30 kPa in a small DN15 package, enabling quiet and stable system operation. Its compact design simplifies installation in confined spaces and minimizes hydraulic losses while maintaining predictable flow conditions. By stabilizing pressure differentials, the valve reduces wear on control valves and actuators and helps to avoid pumping cycles or hydraulic imbalances that can impair system performance.
Suitable for
Hydronic heating systems with DN15 distribution pipes
Chilled-water circuits in small residential or light commercial buildings
Protection of control valves and actuators from pressure peaks
Reducing flow noise and pressure fluctuations in small mains
Key specifications
Designed differential pressure setpoint: 30 kPa
Connection size: DN15
Application: hydronic heating and chilled-water circuits
Housing: compact form factor suitable for tight installation spaces
Function: maintains constant differential pressure to stabilize flow and protect downstream components
How to use
Install the regulator in the intended DN15 branch or main line following piping direction markings; orientation and location should ensure stable upstream and downstream flow conditions. Integrate the device upstream of control valves or terminal units to maintain the specified 30 kPa differential across those components. Commission the system according to standard hydraulic balancing procedures, verify the pressure differential under typical operating conditions, and adjust upstream controls or pump settings if necessary to ensure proper operation.
Usage recommendations
Place the regulator where it can be accessed for inspection and ensure the surrounding piping is free from debris and air; perform initial checks after system filling and periodic checks during routine maintenance to confirm the differential pressure remains stable at 30 kPa. For best results, combine with proper hydraulic balancing and correct pump sizing suited to DN15 distribution runs.

## FAQ

### How much does the Herz differential pressure regulator 30 kPa DN15 cost, and is it available for purchase?

The price is 124.99 € (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 Herz differential pressure regulator 30 kPa DN15 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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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