# Pressure regulator CALEFFI 535051 3/4" 25 bar with pressure gauge

**URL:** https://aio.lv/en/product--caleffi-535051--4863186
**Data updated:** 2026-03-07 15:03 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** CALEFFI
**Manufacturer code:** 535051
**EAN:** 8016615014525
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 99.49 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 82.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--caleffi-535051--4863186

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

CALEFFI pressure regulator model 535051 is a 3/4" water pressure reducing valve rated to 25 bar and fitted with an integrated pressure gauge. Designed to control and stabilize domestic or light-commercial water supply pressure, it protects plumbing fixtures and appliances from overpressure. Suitable for installation on inlet lines to boilers, pumps, or distribution manifolds.

## Long description

CALEFFI 535051 is a 3/4" water pressure regulator designed to reduce and stabilize incoming mains or pump pressure for domestic and light-commercial systems. Rated for operation up to 25 bar, the valve includes an integrated pressure gauge to provide immediate visual confirmation of downstream pressure. The regulator is intended for installation on inlet lines to boilers, water heaters, pumps, and distribution manifolds to protect fixtures, appliances and piping from excessive pressure fluctuations.
Advantages
The pressure regulator provides precise downstream pressure control and long-term stability thanks to a balanced internal mechanism. Its compact 3/4" body suits typical residential and small commercial pipework while the integrated pressure gauge allows quick checks without additional instruments. Constructed for reliability in water distribution, the valve helps reduce wear on fixtures and extend the service life of connected equipment. Installation and routine verification are simplified by the visible gauge and standard threaded connections.
Suitable for
Domestic water supply pressure reduction
Inlet protection for boilers and water heaters
Pressure regulation for pumps and pressure booster systems
Feeding distribution manifolds in apartments and small commercial buildings
Key specifications
Connection size: 3/4" (female/male threaded depending on installation)
Maximum operating pressure: 25 bar
Integrated analog pressure gauge for downstream pressure reading
Application medium: potable water and general water distribution
Typical installation position: inlet of boilers, pumps or manifolds
How to use
Install the regulator in the cold-water inlet line with correct flow direction indicated on the body and use appropriate thread sealant for the pipe connections. After installation, gradually open the upstream shut-off valve and observe the integrated gauge while adjusting downstream pressure to the required setpoint if the model provides an adjustable mechanism. Verify that downstream fixtures operate correctly and re-check the gauge after initial operation to ensure stable pressure. Follow local plumbing codes and isolate the supply before servicing.
Usage recommendations
For reliable performance, fit the regulator where it can be easily accessed for periodic inspection of the gauge and connections. Where water quality is poor or contains particulate matter, install a coarse strainer or filter upstream to prevent debris from affecting the valve mechanism. If installed on systems with potential backflow, complement the regulator with appropriate backflow prevention devices as required by regulations.

## FAQ

### How much does the Pressure regulator CALEFFI 535051 3/4" 25 bar cost, and is it available for purchase?

The price is 99.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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 29.06.2026 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 Pressure regulator CALEFFI 535051 3/4" 25 bar 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 CALEFFI 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 CALEFFI 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/4863186/51331869_large.webp