147 PROCESS AUTOMATION TECHNOLOGY Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice Valves and solenoid valves with “Namur” interface Series 514 High Performance Process automation technology Catalogue Valves and solenoid valves with “Namur” interface series 514 High Performance General The valves 514 series are designed with interface connections in compliance with NAMUR standards. The range includes 5/2 and 4/2 versions with pneumatic or electric actuation and with NPT or BSPT connections. This series is classified for use in potentially explosive atmospheres (Directive 2014/34/EU). NAMUR valves have been designed to guarantee flexibility and an increased flow rate capacity exceeding that of traditional spool valves. Innovative materials guarantee high performances also in critical environment conditions. The solenoid valves are available with protection classes for zones 2-22, 1-21 solenoids Ex nA, Ex mb, Ex ia, international approvals IECEx, FM and CSA. Note: "Although accurately described, the 4/2 valve actually functions as a 3/2 normally closed valve and should be used as such." NAMUR interface dimensions: according to standard (VDI/VDE 3847 July 2003) Construction characteristics Body Aluminium Spacers Technopolymer Seals Nitrile rubber Springs Stainless steel Operators Technopolymer Spools Steel Screws Zinc coated steel / Stainless steel
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