Flexible connection hose kfa² GW/GW 3/8" x 3/8" (model 644-030-38) for plumbing connections

Flexible connection hose kfa² GW/GW 3/8" x 3/8" (model 644-030-38) is a pliable water supply hose intended for use in residential and commercial sanitary installations where a 3/8" female-to-female connection is required. The hose provides a leak-resistant flexible link between fixtures such as taps, valves or appliances and the fixed water supply lines. Its construction allows routing in confined spaces and reduces stress on rigid piping during installation and operation.

Advantages

This kfa² flexible hose offers ease of installation thanks to its compact, flexible body and standard GW/GW 3/8" threaded fittings. The design minimizes the risk of leaks by providing secure connections at both ends and accommodates small positional adjustments without the need to modify existing plumbing. The hose is suitable for frequent handling during maintenance and replacement because of its durable materials and corrosion-resistant fittings.

Suitable for

• Connecting household taps and faucets to water supply lines
• Linking valves, mixers and small sanitary appliances
• Use in tight installation spaces behind sinks, basins and cabinets
• Temporary or permanent connections in domestic and light commercial plumbing

Key specifications

• Connection type: female-to-female (GW/GW)
• Connection size: 3/8" x 3/8"
• Application: cold and hot water supply in sanitary systems
• Design: flexible hose for easy routing in confined spaces
• Fittings: corrosion-resistant threaded fittings for secure sealing

How to use

Shut off the water supply before fitting the hose. Ensure connection threads on both the fixture and supply outlet are clean and free of debris. Hand-start the 3/8" fittings to avoid cross-threading, then tighten to the required snugness using an appropriate wrench; avoid overtightening. After installation, restore the water supply and check all joints for leaks. Replace the hose if signs of wear, damage or persistent leakage appear.

Usage recommendations

Use this flexible connection hose only for potable water supply lines and within the temperature and pressure limits of the installation. Avoid kinking the hose and do not expose it to direct sunlight or aggressive chemicals. For long-term reliability, inspect connections periodically and replace the hose during major plumbing renovations or when signs of deterioration are observed.