Stainless steel check valves INOXLINE with new versions for demanding applications

Eisele offers check valves and quick-release connectors with a check valve not only in versions made of brass and nickel-plated brass, but now also of stainless steel 1.4404.

Check valves and quick-release connectors of non-corrosive and acid-resistant stainless steel from the Eisele INOXLINE are ideal for use in the compressed air systems of hygiene-sensitive applications in the food and pharma industries. These connectors withstand even harsh and corrosive operating conditions, for a long service life. The check valves ensure the free flow of compressed air in one direction. They open at a specified operating pressure, while the flow in the opposite direction is blocked.

Enclosed O-rings for a reliable seal

As opposed to the brass version, the outer threads of the check valves are equipped with enclosed O-rings of FPM (Viton), which ensure a particularly reliable seal. The check valves have inner threads on the inlet side and outer threads on the outlet side or vice versa. They are also available optionally with two inner or outer threads. The three thread diameters of 1/4, 3/8 and 1/2 inch cover the standard requirements of industry and the skilled trades.


Quick-release connectors of stainless steel also available

The version featuring a valve seat with an FPM seal is suitable for both compressed air and fluids. The working pressure range is from 0.5 to 16 bar. The check valves are suitable for use at temperatures between -50 and +200 °C.

The check valves are supplemented by a stainless steel quick-release connector with 1/4 inch outer threads that is suitable for air with a pressure of up to 10 bar. The same applies to the corresponding push-on nipples. The quick-release connector is available with or without two-sided shut-off.


The check valves and quick-release connectors of stainless steel 1.4404 are based on the design of the time-proven brass components from Eisele

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Check valves and quick-release connectors

Meta description:

The check valves and quick-release connectors of stainless steel 1.4404 are based on the design of the time-proven brass components from Eisele

Key words:

check valves, quick-release connectors, push-on nipples, INOXLINE, pneumatic connector, compressed air

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About Eisele


The Eisele Pneumatics GmbH & Co. KG has been emerged from a company founded in 1939. With over 70 years experiences in the metal-cutting Eisele belongs since 40 years to the worldwide leading companies for connection components with the highest quality. For a variety of industries EISELE developed convincing connection solutions thanks to interdisciplinary expertise.

EISELE is quality made in Germany

Our company is loyal to its philosophy and its roots. Germany is the place where we find our highly qualified employees – the workforce responsible for our company’s output. With a manufacturing depth of almost 100%, and stock keeping at the production site itself, we can optimally supply our customers, and respond quickly to fulfill needs and technical specifications. EISELE is part of a global logistics network that guarantees the fast availability of our products on the global market.

From EISELE connection components you may expect:

  • Highest tightness and safety
  • Ruggedness and long lifetimes
  • Vacuum-compatible products
  • Easy mountig and disassembly
  • Special connections for a broad range of applications


Our website now has short YouTube videos demonstrating Eisele connector products and how to use them.

As experts on connectors, key account manager Wolfgang Ernst and his colleague Louis Klöpfer explain the correct use of our extensive product spectrum. The videos are a fast and convenient way of providing design engineers and users with information on the use and potentials of the solid metal connectors. They also contain news about new products and developments. Explore and learn more about the components of the MULTILINE ADAPTIVE, LIQUIDLINE, MULTILINE E and INOXLINE.



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