Pneumatics & Hydraulics

Hard-wearing pneumatic valves have long service life

April 2000 Pneumatics & Hydraulics

Numatics' well-known spool and sleeve assembly solenoid and pilot valves are used in sugar and paper mills worldwide. Here in South Africa Numatics' valves are working trouble-free in most of the major mills.

Numatics SA has been involved in upgrades at Nampak, Sezela and Swaziland mills. Its range of services vary from straight supply to turnkey projects as well as the installation of its equipment on site. Numatics SA has grown from a small operation to a company with representation in all major centres of the country. The main reasons for the growth are the reliability of the Numatics valves, competitive pricing and back-up service.

The Numatic valve consists of a stainless steel spool and sleeve assembly which ensures safe operation with fast response times. The reliability of the valves is maintained for both lubricated and unlubricated air. The hardness of the spool and sleeve ensures no damage from pipe scale or other airline contaminants, while the stainless steel construction combats any airline moisture. These features allow a typical service life in excess of 200 million cycles. The solenoid valves are fitted with low-power consumption coils and combined with low shifting forces, offer economical, high-speed switching.

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