The Core of Our Valve
The core of the Larox pinch valve is the elastic sleeve, which is the only
part in contact with the medium. The full bore sleeve integrates the valve to
the pipeline. This full bore design eliminates turbulence and minimizes
pressure losses. Technologically advanced Larox sleeves guarantee high wear
and corrosion resistance, a trouble free operation, and extended lifetime. Our
sleeves are 100% tight.
Larox sleeves are handmade layer by layer in a quality process covered by ISO
9001:2000. The standard sleeve design consists of three sets of layers: the
inner layer, the reinforcement layer and the outer layer.
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The inner layer, which is the only part in contact with the medium, is
resistant to wear and chemicals.
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The reinforcement layer gives the sleeve its pressure retaining capability.
The operating pressure of the sleeve determines the reinforcement fabric to be
used in this layer.
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The outer layer protects the sleeve from the external process environment.
All standard Larox sleeves are equipped with opening tags to ensure full valve
opening in all conditions.
A Wide Range of Material and Design Options
Pinch valves are often applied in aggressive, abrasive and corrosive media
types, or in high-pressure applications. To cover a wider range of
applications, our R&D has developed several sleeve materials and constructions
to meet these industry specific needs. The high-grade Larox sleeve materials
range from wear resistant styrene butadiene to numerous other elastomers and
rubber compounds. These materials are highly resistant to abrasive and
corrosive slurries, powders and granular substances. By introducing a HNBR,
hydrogenated nitrile sleeve material, Larox sleeves can now handle
temperatures up to 160°C.
