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21W Ex m, Ex d N.C/N.O.

21W Ex m, Ex d N.C/N.O.
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Atex - Solenoid Valve 2/2 Way With Pilot Control Explosion Proof FEATURES Wide range of applications high flow valves for liquids, gaseous Reliable proven design with high flows Small poppet valve for tight shutoff Mountable in any position TECHNICAL SPECIFICATION 4 Body material: Brass UNI EN 12165 CW617N 4 Armature tube: Stainless Steel AISI 300 series 4 Plungers: Stainless Steel AISI 400 series 4 Spring: Stainless Steel AISI 300 series 4 Ex d Housing in Aluminium die cast 4 Media: mineral oils, gasoline, diesel, air, inert gases, water, R 134a, R 404a 4 Ex m Ambient temperature: See coils catalogue page for its compatibility 4 Ex m Fluid temperature: -10°C +80°C with FKM seals -30°C +80°C with H-NBR seals 4 Design pressure PS: G 3/4 - 1 25 bar 25 bar for 21WA3Q e 21WA4Q 20 bar for 21WA3KI e 21WA4KI 21WA3ZI e 21WA4ZI 4 Ex d Ambient temperature: -40°C +60°C 4 Ex d Housing Fluid temperature: -10°C +80°C with FKM seals Protection class: Ex m IP 65 (complete with electric plug); Ex IP 65 (with hosing fitted by cable gland Atex Ex d) Electrical conformity: IEC335 Switching time: 20-40 msec (depending on pressure conditions) (Conforme to Atex Directive 94/9/CE ATEX) For S.V. 21W..I II 2G Ex d IIC T6 o T5 Gb II 2D Ex tb IIIC T80°C o T90°C Db IP67 (Tamb: -40°C < +60°C) For S.V. 21W..Q II 2G Ex mb IIC Gb II 2D Ex tb IIIC t130°C Db (Pressure Equipment Directive 97/23/CE) for S.V. 21WN7+21WN9 - 21W5+21W7 INSTALLATION 4 The solenoid valves can be mounted in any position 4 Maintenance and instruction sheet available in each solenoid valve box 4 Attention: for fuse selection please refer to the “Instruction sheet Atex products” delivered together with the valve 4 Fixing holes 4 Holes and threaded connections for panel fixing

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