Safety clamp and pressfitting systems for externally corrugated spiral hoses

NORRES, one of th leading hose manufacturer based in Gelsenkirchen (Germany), has just brought two innovative products onto the market. Following the huge success last year of its first safety clamp system for thick-walled polyurethane spiral hoses for loading and unloading silo vehicles, the NORRES product range has now been extended with two new clamp systems for heavy and super-heavy, externally corrugated spiral hoses. The CONNECT Pressfitting System 232 is predestined for the food, pharmaceutical and chemical industries, while the CONNECT Safety Clamp System 231 is intended for industrial applications, for example in plastics production.

In the past, piping clamps were used to connect externally corrugated spiral hoses to adapters for all kinds of application. Under high pressure, however, this inevitably entails a risk that the adapter could become displaced or the system gradually lose its tightness.
The NORRES Schlauchtechnik R&D department has now come up with a special, threaded sealing industrial insert that is adapted to the outer hose contour and assembled between the hose and the shell or pressing sleeve. The connection formed when the shells are clamped or the sleeves pressed together is remarkably tight. In the case of the pressfitting system, users additionally profit from connections without any clearance spaces. Both these innovative systems are designed with a form-locking groove and a form-locking bar. The resulting high tensile strength ensures that the adapter is securely held in the spiral hose even under considerable pressure.