Lüdecke - Main Catalogue Pagina 255
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Ball Valves and Throttle Valves ball and throttle valves are used as shut-off valves in pipe systems. In ball valves, a ball serves as shut-off device in the fitting. It opens and closes the fitting with a 90-degree rotation. Due to the full passage only small losses of flow occur. Specific O-rings which are attached between the ball and the body provide sealing. In throttle valves, a cone shaped throttle will be pressed against the body under pressure. In this way, the valve seals without any seal wear (almost no dead space in the passageway). When turning off, pressure is reduced by ventilating the output side. This allows for safe disconnection. Advantages: • High-quality materials • Robust, reliable, absolutely leakage-proof and durable • Easy and fast handling • Different sizes, version and connection types Broad Range At you will get the necessary ball valves and throttle valves for various application areas. Ball Valves Sturdy-Version Ball Valves Light-Version Double Ball Valves and Airhammer Ball Valves Brass CW617N Forged brass nickel-pl. Brass CW617N Brass CW617N Brass MS 58 nickel-pl. Forged brass nickel-pl. Brass MS 58 nickel-pl. Brass CW617N Brass MS 58 plain Brass MS 58 chromed Brass MS 58 chromed PTFE*/FKM** PTFE*/FKM** Brass MS 58 chromed PTFE glass fiber reinf.*/ NBR** Die-cast aluminium red/ black lacquered PN 35 bar -15°C – + 100°C DIN EN 10226 256 Steel zinc-plated and coated with red PVC see diagram -15°C – + 120°C ISO 228 256 Throttle Valves Standard-Version Throttle Valves US-Version Malleable iron zincplated + yellow pass. - Malleable iron zincplated + yellow pass. - - - NBR/ Brass NBR Malleable iron zincplated + yellow pass. PN 10 bar -15°C – + 80°C ISO 228 258 Malleable iron zincplated + yellow pass. PN 10 bar -15°C – + 80°C NPT, ANSI / ASME B1.20.1 259 Materials Body: Sockets: Spindle and nut: Ball: Seals: Handle: Max. Working Pressure: Temperature: Thread: Page: *ball seals /**spindle seals Steel red lacquered PN 35 bar -15°C – + 100°C ISO 228 257 255
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