Vito Rimoldi SpA

Made with elastomers or closed or semi-closed cell flexible expanded synthetic resins. They come in different shapes and sizes, are made of materials having different density and characteristics according to the application required by the Customer.

Depending on the properties, they may be used in braking systems (for example in the furniture sector), for vibration dampening (for example in the household appliace sectors) or as shock absorbers.

Reed valves, flapper valves, leaf valves and valve retainers are typically used in refrigeration compressors for the civil, industrial and automotive sectors. They are mechanically critical components that define the characteristics and the quality of a compressor, which are very demanding in terms of dimensional tolerances, roughness, impact and fatigue resistance. Their main characteristic is the ability to withstand stress created by repeated bending without breaking.

The dimensional and mechanical characteristics requested by the Customers are obtained thanks to the use of particular materials and of specially-developed production technologies. As for materials, the flapper valves and the reed valves are obtained from very thin ribbons of tempered steel, developped specifically for this application and supplied only by a limited number of qualified manufacturers worldwide; carbon steels or stainless steels are used, depending on Customers' requirements.

For this reason, we do not just blank metal, but we control all the factors that affect the life expectancy of the reed valve, that is several billions of cycles. These factors include geometry (for correct assembly and coupling during operation), flaws on the surface of the materials (scratches, roughness, impurities), applied and residual stress, temperature changes, bending, twisting and impacts. Last but not least, chemical aggression, including corrosion.

The need to improve the efficiency of the compressors requires minimizing the width of gaps between the moving and fixed parts of the reed valves: only refined blanking and finishing techniques allow containing the distances within a few tenths of a millimeters.

Soft gaskets are flat industrial seals, characterized by an endless variety of geometric shapes and sizes, made from sheet or from ribbon of constant thickness.
They are produced using a large variety of materials: asbestos-free plastic composite, graphite, compact or foam elastomers and other special materials, according to the needs and specifications of Customers.
They are intended for industrial use, especially for original equipment, but also for maintenance operations and spare parts.

They guarantee a microleak-free sealing, thanks to the right mixture of high density, stable and flexible materials, which makes fitting the gasket easy and ensures adaptability to irregular surfaces.

They ensure the ideal tightening load even after anaphoresis painting cycles.