A4UC4-W straight connector 1/4T x 1/4T
A4UC4-W is a straight connector 1/4T x 1/4T for quick connection of 1/4 inch hoses used in under-sink water treatment systems, includin Read moreShow less
A4UC4-W is a straight connector 1/4T x 1/4T for quick connection of 1/4 inch hoses used in under-sink water treatment systems, including reverse osmosis. Quick-connect installation: simply push the hose in until it stops. It facilitates the extension of the installation and allows connecting two sections of the pipe without Teflon tape and without twisting.
Specifications
- Accessory type
- Fitting
- Compatibility
- Universal RO systems
- Connection size
- 1/4″
- Fitting type
- Straight coupling
- Model
- A4UC4-W
- Product type
- Quick fitting
View full specifications
- Tube outer diameter
- 1/4″
Description
A4UC4-W straight connector 1/4T x 1/4T is a practical quick connector for joining two 1/4-inch hose sections in water treatment installations. It works well in systems such as reverse osmosis, osmotic filter, water filter, and a home water filtration system installed under the sink. It allows you to quickly extend a hose, repair a section of the installation, or connect two hose segments without twisting and without using PTFE tape.

What is the A4UC4-W connector used for?
A4UC4-W is a straight 1/4T x 1/4T connector designed for joining hoses used in under-sink water treatment systems. Such components are commonly used in installations where a reverse osmosis system, reverse osmosis filter, or another compact system preparing water for drinking operates.
Its purpose is to efficiently connect two sections of 1/4-inch tubing. This is a particularly convenient solution when you need to extend an existing hose, repair a damaged section of the installation, or adjust the hose length without replacing the entire section with a new one.
Main advantages
- allows you to connect two 1/4-inch hose sections,
- makes it easier to extend the installation without replacing the entire hose,
- installation is done by pushing the hose in until it stops,
- does not require additional twisting,
- does not require sealing with PTFE tape,
- works well in under-sink water treatment systems,
- is a practical emergency component that helps quickly restore installation continuity,
- the internal quick-connect mechanism supports a secure and durable connection.
Fast installation without complications
The connector works as a quick-connect type fitting. This means installation consists of pushing the hose all the way into the connector socket. This method significantly simplifies installation and service work while eliminating the need for additional sealing materials.
In practice, A4UC4-W allows you to quickly connect two hoses in situations where time and ease of installation matter. It is a solution especially valued during system upgrades, replacement of individual components, or ad hoc system repairs.
Before inserting the hose, make sure its end is cut evenly. The hose should be pushed in until it stops so that the connection is stable and tight.
Practical use in water filtration systems
The 1/4T x 1/4T straight connector is used wherever thin supply and drain hoses are used in domestic filtration installations. It is suitable for under-sink systems where quick expansion or repair of connections without complicated installation is important.
This solution often proves extremely helpful as an “emergency saver” — for example, when there is a need to extend a 1/4-inch hose and replacing the entire hose with a longer one is not possible or would be unnecessarily troublesome.
Why is it worth having such a connector on hand?
In installations such as a water filter or a reverse osmosis system, small installation parts have a big impact on service convenience. The A4UC4-W straight connector can shorten repair time, make it easier to expand the system, and help avoid downtime in system operation. As a result, it is a practical accessory for both home users and people installing or servicing water treatment devices.
Technical specifications
| Model | A4UC4-W |
|---|---|
| Element type | Straight connector / coupling |
| Connection size | 1/4T x 1/4T |
| Intended use | Connecting two sections of 1/4-inch hose |
| Application | Under-sink water treatment systems, including reverse osmosis systems |
| Mounting type | Quick connector |
| Installation method | Push the hose in until it stops |
| Need for twisting | No |
| PTFE tape sealing required | No |
| Functional purpose | Extending the installation and connecting two sections of hose |
FAQ
What is the A4UC4-W connector used for?
It is used to connect two sections of 1/4-inch hose in water treatment installations, especially in systems mounted under the sink.
Does this connector fit reverse osmosis systems?
Yes, the connector is designed for hoses used in under-sink water treatment systems, including reverse osmosis systems and osmotic filters.
What hose size does the A4UC4-W support?
The A4UC4-W model is designed for connecting 1/4-inch hoses, i.e. in a 1/4T x 1/4T configuration.
Is PTFE tape needed for installation?
No. The connector works as a quick connector, so it does not require sealing with PTFE tape.
Does the connection need to be twisted?
No, installation consists of pushing the hose in until it stops. There is no need to additionally twist the connection.
When is such a connector especially useful?
It is most useful when you need to extend a 1/4-inch hose, connect two hose sections, or quickly repair a section of the installation without replacing the entire hose.
Is the connector suitable for emergency installation repairs?
Yes, it is an element often used as a practical emergency solution when you need to quickly restore the installation and connect hoses without complicated work.
How should the hose be installed correctly in the quick connector?
The end of the hose should be cut evenly and then pushed into the connector until it stops. This ensures a stable and secure connection.
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