# Pressure regulator Honeywell D04FM-1/2A 1/2" inlet/outlet, model D04FM-1/2A

**URL:** https://aio.lv/en/product--honeywell-d04fm-12a--10457681
**Data updated:** 2026-03-07 15:19 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** Honeywell
**Manufacturer code:** D04FM-1/2A
**EAN:** 4019837146610
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 30.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--honeywell-d04fm-12a--10457681

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Honeywell D04FM-1/2A is a 1/2" pressure regulator designed to control and stabilize fluid or gas pressure in pipelines and installations. The unit provides adjustable pressure regulation, compact in-line mounting with 1/2" connections, and is suitable for HVAC, industrial and commercial applications where reliable pressure control is required. Use for maintaining set downstream pressure and protecting equipment.

## Long description

Honeywell D04FM-1/2A is a 1/2" pressure regulator designed to control and stabilize fluid or gas pressure in pipelines and installations. The compact in-line unit provides adjustable downstream pressure for HVAC, industrial and commercial systems, allowing reliable maintenance of set pressure and protection of downstream equipment. The regulator features 1/2" inlet and outlet connections and a straightforward mechanical adjustment mechanism suitable for integration into existing piping.
Advantages
The pressure regulator offers precise downstream pressure control with a compact footprint for in-line mounting. Its mechanical adjustment provides reliable performance without complex electronics, and the robust construction ensures durability in demanding environments. The 1/2" connections allow compatibility with common piping sizes while the design minimizes pressure fluctuation and reduces the risk of damage to sensitive components downstream.
Suitable for
HVAC systems requiring stable supply or control pressures
Industrial process lines where consistent downstream pressure is needed
Commercial plumbing and gas installations with 1/2" pipework
Applications protecting pumps, valves and downstream instruments from overpressure
Key specifications
Connection size: 1/2" inlet and outlet suitable for standard pipe fittings
Type: mechanical pressure regulator for gas or liquid media
Mounting: in-line compact housing for direct pipeline installation
Adjustment: manual adjustable setpoint for downstream pressure
Construction: durable materials intended for industrial and commercial use
How to use
Install the regulator in the pipeline with correct flow direction, ensuring tight and compatible 1/2" connections. Set the desired downstream pressure using the manual adjustment mechanism while monitoring the system pressure with an appropriate gauge. Carry out initial adjustments slowly and verify stability under normal operating conditions. Periodically inspect the regulator and connections for leaks or wear and perform maintenance according to system requirements.
Usage recommendations
Use the regulator within the pressure and temperature limits of the system media, and ensure compatibility of materials with the fluid or gas in the line. Install a pressure gauge downstream for accurate adjustment and consider upstream filtration to prevent contamination. For safety, isolate and depressurize the line before performing maintenance or replacement.

## FAQ

### How much does the Pressure regulator Honeywell D04FM-1/2A cost, and is it available for purchase?

The price is 37.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 94 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 16.07.2026 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 Honeywell 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 Honeywell 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/10457681/52490018_large.webp