# Pressure regulator CALEFFI 3/4" 16 bar with pressure gauge (model 533251)

**URL:** https://aio.lv/en/product--caleffi-533251--4863185
**Data updated:** 2026-02-17 10:59 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** CALEFFI
**Manufacturer code:** 533251
**EAN:** 8016615014259
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 46.49 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 38.42 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--caleffi-533251--4863185

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.06.2026 | free |
| Pickup points | 01.07.2026 | 1.99 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

CALEFFI pressure regulator model 533251 is a 3/4" valve designed to limit water supply pressure up to 16 bar. Fitted with an integrated pressure gauge for visual monitoring, it ensures stable downstream pressure for plumbing and heating systems. Suitable for residential and light commercial installations, it reduces pipe stress, protects fixtures and improves system reliability.

## Long description

CALEFFI 3/4" pressure regulator model 533251 limits incoming water pressure to a stable downstream value and includes an integrated pressure gauge for visual monitoring. Designed for residential and light commercial plumbing and heating systems, the compact valve reduces pressure spikes, protects fixtures and appliances, and helps maintain consistent system performance. The body and internal components are engineered for standard water supply conditions and routine installation on 3/4" pipe connections.
Advantages
The regulator provides accurate pressure reduction up to a maximum inlet pressure of 16 bar and allows quick visual verification via the built-in pressure gauge. Its 3/4" connection size fits common domestic and small commercial piping, and the valve design reduces downstream pressure fluctuations that can cause wear and leaks. The compact, serviceable construction simplifies installation and routine checks without requiring additional external gauges.
Suitable for
Domestic water supply pressure reduction for houses and apartments
Light commercial installations such as small offices, shops and clinics
Protection of sanitary fittings, boilers and water-using appliances against overpressure
Plumbing systems where visual pressure monitoring is required
Key specifications
Connection size: 3/4" suitable for standard threaded pipe fittings
Maximum inlet pressure capability: designed for use up to 16 bar
Integrated pressure gauge for direct visual monitoring of downstream pressure
Application: cold and hot water distribution systems and heating installations
Construction: compact valve body with serviceable components for maintenance
How to use
Install the regulator in the main incoming water line or a branch line using the appropriate 3/4" threaded connection, observing flow direction indicated on the body. Adjustments to the downstream pressure are made following the manufacturer's installation guidance; after initial setup, confirm the set pressure using the built-in gauge. Perform routine visual checks of the gauge and inspect the valve for leaks or damage during normal maintenance intervals. For system isolation or servicing, close upstream and downstream shut-off valves before removing or servicing the regulator.
Usage recommendations
Install the regulator where it is accessible for reading the gauge and for maintenance. Ensure upstream water quality and strainers are in place to reduce debris entering the valve. Do not exceed the valve's maximum inlet pressure rating and follow local plumbing codes and manufacturer installation instructions for reliable operation.

## FAQ

### How much does the CALEFFI pressure regulator 3/4" 16 bar (533251) cost, and is it available for purchase?

The price is 46.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 159 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 26.06.2026 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. 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 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/4863185/52271600_large.webp