Flexible connection hose kfa² 644-040-38, female 3/8" x female 3/8" for plumbing fittings

The kfa² flexible connection hose model 644-040-38 with female 3/8" x female 3/8" fittings is a short, flexible water supply hose designed for indoor plumbing connections. It provides a compact link between threaded fittings on faucets, mixers and other sanitary fixtures, allowing for slight misalignment and easier installation in tight spaces.

Advantages

This flexible hose offers a compact construction that simplifies connections in confined areas and reduces the need for precise alignment of rigid piping. Its flexibility allows for vibration absorption and slight movement without transmitting stress to fittings. The female 3/8" x female 3/8" ends make it compatible with common threaded plumbing outlets used on mixers and valves. The hose is intended for indoor cold and hot water supply lines and facilitates straightforward replacement or maintenance of fixtures.

Suitable for

• Connecting bathroom and kitchen faucets to supply lines
• Linking mixers and valves to threaded outlets in tight spaces
• Temporary or permanent flexible connections where short length is required

Key specifications

• Connection type: female 3/8" x female 3/8" threaded ends
• Application: indoor potable water supply for faucets, mixers and sanitary fixtures
• Design: short, flexible hose to accommodate misalignment and reduce stress on fittings
• Material characteristics: flexible inner hose with protective outer covering suitable for plumbing use
• Typical use temperature: suitable for cold and hot water within standard indoor plumbing temperature ranges

How to use

Shut off the water supply before disconnecting or connecting the hose. Ensure mating threads on the faucet, mixer or valve and the supply connection are clean and undamaged. Hand-tighten the female 3/8" ends onto the corresponding male threaded outlets, then use an appropriate wrench to secure the connection without over-tightening. After installation, open the water supply and inspect connections for leaks; tighten slightly if necessary. Replace the hose if signs of wear, leakage or damage appear.

Usage recommendations

Use this kfa² flexible connection hose for indoor potable water systems only. Avoid exposure to direct sunlight, freezing conditions or aggressive chemicals. Periodically check connections for tightness and integrity, and replace the hose if you detect leaks, bulging, kinks or significant outer-covering damage.