# Adapter testo 0554 3113 for refrigerant hoses — 1/4" to 5/16" SAE and 7/16" to 1/2" UNF

**URL:** https://aio.lv/en/product--testo-0554-3113--11737126
**Data updated:** 2026-03-08 13:39 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** testo
**Manufacturer code:** 0554 3113
**EAN:** 4029547027482
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 40.49 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--testo-0554-3113--11737126

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Mechanical adapter testo 0554 3113 for refrigerant and service hoses, providing fittings conversion between 1/4" and 5/16" SAE and between 7/16" and 1/2" UNF. Designed for use with HVAC/R charging and diagnostic equipment, it allows secure connection of hoses and gauges with differing thread standards for refrigerant handling and measurement tasks.

## Long description

Mechanical adapter testo 0554 3113 for refrigerant and service hoses provides reliable thread conversion between 1/4" and 5/16" SAE and between 7/16" and 1/2" UNF. Designed for HVAC/R charging and diagnostic equipment, the adapter enables a secure mechanical connection of hoses and gauges with differing thread standards used in refrigerant handling and measurement operations.
Advantages
The adapter offers a compact, mechanically robust solution for converting between SAE and UNF fittings without requiring additional tools. Its precision-machined threads ensure leak-minimised connections and consistent engagement with refrigerant hoses and service ports. The small form factor supports easy handling in confined installation spaces while maintaining the mechanical strength necessary for safe charging and diagnostic work.
Suitable for
 Connecting refrigerant hoses and pressure gauges with 1/4" SAE and 5/16" SAE fittings
 Adapting 7/16" UNF fittings to 1/2" UNF service connections
 HVAC/R charging, evacuation and diagnostic tasks where mixed-thread hose sets are used
 Field service and workshop environments requiring quick thread conversion
Key specifications
 Thread conversion types: 1/4" SAE ↔ 5/16" SAE and 7/16" UNF ↔ 1/2" UNF
 Material: mechanically machined metal suitable for refrigerant service (metallic construction)
 Compatibility: intended for use with standard HVAC/R hoses, gauges and service fittings
 Form factor: compact inline adapter for low-clearance applications
How to use
Before use, verify that both mating threads are clean and free of debris. Hand-start the adapter into the target fitting to ensure correct thread engagement, then tighten by hand and finish with an appropriate wrench if required, taking care not to over-torque. After connection, perform a pressure check or leak test in accordance with standard refrigerant handling procedures. Use only with compatible hoses, gauges and service ports rated for the refrigerant and operating pressures in your system.
Usage recommendations
For safe and reliable operation, inspect threads for wear or damage before each use and replace the adapter if any deformation or excessive wear is detected. Follow applicable HVAC/R safety guidelines and refrigerant handling regulations, and use leak-detection methods after installation to confirm a tight seal.

## FAQ

### How much does the Adapter testo 0554 3113 — 1/4"-5/16" SAE, 7/16"-1/2" UNF cost, and is it available for purchase?

The price is 48.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 23.07.2026 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 testo 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 testo 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/11737126/67116372_large.webp