Stainless Steel Extension Hose PROFI S for drinking water with stainless steel nozzles (1" FF, 50-100 cm)

Product detailed description

Stainless steel extension hoses are essential components in drinking water systems where flexibility and durability are required. These hoses are commonly used in industrial, commercial and residential plumbing systems, particularly in areas where space constraints or movement necessitate an adaptable connection. Installers working in boiler rooms, under sinks, or in compact mechanical spaces often rely on such hoses to connect fixtures, valves or appliances to the main supply. The PROFI S model is specifically engineered for scenarios where a fixed-length hose is impractical and where maintaining a hygienic, corrosion-resistant connection is critical.

Its ability to extend allows for temporary adjustments during installation or maintenance without the need for cutting or replacing the entire assembly. This is especially useful in tight spaces where conventional rigid piping would be difficult to fit or reposition. The material and design ensure compatibility with potable water standards, making it suitable for use in kitchens, laboratories, and other environments where water quality is a priority.

Technical parameters

The technical parameters define the hose's suitability for specific applications. The operating temperature range of -20 °C to +100 °C ensures it functions effectively in both cold and warm water systems. The FF (female-female) threading allows for straightforward coupling with compatible fittings. The length range of 500 to 1000 mm provides adaptability for various installation scenarios. The use of AISI 304L stainless steel for the tube and AISI 303 for the fittings ensures high resistance to corrosion and mechanical stress.

Installation and connection

Installation involves connecting the hose to two female-threaded fittings. Ensure the internal threads on both ends are clean and free of debris before assembly. Apply a flat gasket to one side of the rotating fitting to create a leak-free seal. Thread the hose carefully to avoid cross-threading, which can compromise the connection’s integrity. After tightening, inspect the joints visually and manually for any signs of misalignment or strain. A common mistake is over-tightening, which can damage the gasket or deform the fitting. Always follow the manufacturer’s torque specifications if available.

Before finalizing the installation, perform a pressure test using water at a low pressure to detect leaks. This step is crucial in ensuring long-term reliability and safety. Avoid bending the hose beyond its minimum bend radius, as this can cause kinks or weaken the material over time. Ensure the hose is not subjected to lateral forces that could shift the fittings or cause premature wear.

Compatibility and accessories

This hose is compatible with standard female-threaded fittings and valves designed for potable water systems. It is intended for use with components that meet EN 10226-1 specifications for thread profiles. For installations requiring different thread configurations (e.g., FM or MM), alternative models should be considered. No additional accessories are typically required for basic installations, but flat gaskets may need to be sourced separately if damaged or lost during handling. When connecting to non-compatible systems, adapters may be necessary to bridge differences in thread size or type.

Technical background for designers

The operating principle of the PROFI S hose relies on the elasticity of the stainless steel tube, allowing it to stretch and contract while maintaining structural integrity. These materials are selected to ensure compatibility with potable water standards and to resist degradation from common contaminants. The design integrates smoothly into existing plumbing systems, with the FF configuration simplifying connection and disconnection during maintenance or reconfiguration.

The service life and efficiency of the hose depend on proper installation and environmental conditions. Exposure to aggressive chemicals or temperatures outside the specified range can reduce performance. Regular visual inspections and pressure tests help identify early signs of wear or leakage. In high-vibration environments, additional support or damping measures may be required to prevent mechanical fatigue.

Service and operation

During operation, the hose should be monitored for signs of wear, such as surface corrosion or deformation. Any visible damage should prompt immediate replacement to prevent failure. There are no specific service intervals outlined in the technical documentation; however, routine checks are recommended in critical systems. Inspect the connections periodically for tightness and integrity, especially after periods of inactivity or following a pressure surge event. If the hose is used in an environment with frequent temperature fluctuations, ensure that expansion and contraction do not impose undue stress on the fittings or adjacent components.

Frequently asked questions

Can this hose be used with hot water up to 100 °C?
Yes, the hose is rated for continuous operation at temperatures up to +100 °C, making it suitable for both cold and hot water applications.

Is the hose suitable for potable water systems?
Yes, the hose has passed a hygiene test for potable water (HK/W/0728/01/2014, SZU Brno, Nr. 39-10360), confirming its compliance with relevant standards for drinking water use.

Can the hose be shortened or extended beyond the stated length range?
No, the hose is designed to be stretched to twice its original length. It cannot be cut or modified without compromising its structural integrity and performance.

What is the maximum working pressure for this hose?
The hose is rated for a maximum working pressure of 10 bar, which is sufficient for most standard plumbing and water supply systems.