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| New 470 series control valve from ARI-Armaturen  The 470 series control valve, from ARI-Armaturen, is a high performance valve with flexibility and reliability. It is suitable for industrial installations, processing technology and plant manufacturing. The body of the 470, available in SG iron or cast steel, has been specially designed for optimum flow conditions and to minimise noise. It can be fitted with the comprehensive range of electric and pneumatic actuators and accessories available from ARI, and being quickly interchangeable enables OEMs to benefit from reduced stockholding. Available in sizes DN15 to DN150 and with with its pure graphite packing, the ARI 470 control valve can withstand temperatures from -60°C up to 450°C. Its internal parts, the stem, plug and seat can be replaced independently or in situ.The 470 series control valve's can be used across a wide range of applications, including processes using hot water, steam, and heat transfer oils where the option of a bellow sealed gland ensures reliable sealing. It is also suitable for processes with high flow, where a high-pressure drop is needed and where greatly varying load and high turndown is required. The 470 series valves offer significant control advantages including: - The seat and plug can be changed to suit specific plant requirements; this is particularly useful when processes are under development, or loads vary significantly at different times of the year; - Self-centering design which simplifies on-site changes; - May be soft seated for improved sealing on gases and low temperature fluids; - May be 'V' port and post-guided for high pressure drop applications; - May be perforated and post-guided where noise or cavitation is an issue; - May be balanced for very high differential pressures; - The spindle is extremely sturdy, which means that deflection is minimised, even with high flowrates and differential pressures; this means that control is accurate and repeatable with minimum hysterisis. write your comments about the article :: © 2006 Construction News :: home page |