KTPE38BL is a standard blue 3/8" hose for reverse osmosis systems and water treatment. Made of polyethylene, resistant to many chemical compounds, abrasion, and corrosion. Fits connectors and quick couplings for 3/8" hoses. Recommended working pressure: up to 10 bar. The price applies to 1 meter.
KTPE38BL blue hose 3/8" is a universal tube for installations where reverse osmosis, an osmosis filter, a classic water filter, and other water treatment solutions are used. Made of polyethylene, it combines flexibility with high resistance to abrasion, corrosion, and the action of many chemical compounds. It fits fittings and quick-connect connectors designed for 3/8" tubes, and the recommended operating pressure is up to 10 bar. The price applies to 1 meter of hose.

The blue standard 3/8" hose is designed for use in installations where tight and convenient water routing between individual system components matters. It is a practical choice for osmosis systems and solutions used every day at home.
The tube is used in particular in the following systems:
Thanks to the standard 3/8" diameter, the hose works well both when building a new installation and when replacing a worn section of tubing in an existing water filtration system.
The hose is made of polyethylene, a material with a very high degree of polymerization. This material is valued in technical applications for its durability and stable performance properties.
The polyethylene used in the tube is distinguished by:
This combination of features translates into a long service life and convenient use without the need to maintain the tube itself. This is especially important in installations where the hose operates continuously as part of a reverse osmosis system or an under-sink water filter.
The tube fits all fittings and quick-connect fittings compatible with 3/8 inch hoses. The standard size makes it easy to select compatible components and allows you to quickly expand or service the installation.
The blue color also helps organize the pipe layout in more complex systems where several water lines operate at the same time.
Important: the recommended operating pressure for this hose should not exceed 10 bar. Before installation, make sure the tube has been cut properly and is correctly seated in the 3/8" fitting, which helps maintain a tight connection.
| Parameter | Value |
|---|---|
| Model | KTPE38BL |
| Diameter | 3/8 inch |
| Maximum recommended operating pressure | up to 10 bar |
| Material | polyethylene |
| Color | blue |
| Intended use | reverse osmosis systems, under-sink filters, pressure connections in water treatment systems, refrigerator connections to a water dispenser and ice maker |
| Compatibility | fittings and quick-connect fittings for 3/8 inch hoses |
| Sales unit | 1 meter of hose |
It is a tube intended for reverse osmosis systems, under-sink filters, pressure connections in water treatment installations, and for connecting refrigerators with a water dispenser and ice maker.
The hose is made of polyethylene. This material is characterized by high resistance to abrasion, corrosion, and the action of many acids, alkalis, salts, and most organic and chemical compounds.
Yes, the tube fits fittings and quick-connect fittings designed for 3/8 inch hoses. The most important thing is to ensure the size matches on both sides of the connection.
It is recommended that the operating pressure does not exceed 10 bar. This value is specified as the maximum recommended operating load for this model.
Yes, this model is also used for water connections to refrigerators equipped with a water dispenser and ice maker.
No, the polyethylene hose does not require maintenance. Its corrosion resistance and material durability support long service life in typical filtration and installation applications.
The stated price includes 1 meter of hose. When ordering a larger quantity, you receive a correspondingly longer section according to the number of meters purchased.
Yes, the color of the tube makes it easier to identify and organize the installation route, especially in systems where several pipes with different functions are present.
KTPE38BL is a standard blue 3/8" hose for reverse osmosis systems and water treatment. Made of polyethylene, resistant to many chemical compounds, abrasion, and corrosion. Fits connectors and quick couplings for 3/8" hoses. Recommended working pressure: up to 10 bar. The price applies to 1 meter.