Fluid Control Systems Selected product range

3985/2 and 5/3-way I.S. Solenoid Valvefor pneumatic applications• Large flow6518/6519I.S.• Intrinsically-safe operation• Corrosion-resistant versionfor outdoor use• ATEX approvedType 6518/6519 EEx i can be combined with...BarriersRemote I/OProcess valvesThe intrinsically-safe Type 6518I.S. and 6519 I.S.valves consist of an intrinsically-safe pilot controland a pneumatic amplifier. The diaphragmcontrolledvalve seats work with very low friction,ensuring reliable switching of the valve, even afterlong shutdown periods. The valves work withouta continuous air consumption and are used forthe pneumatic control of double or single-actingactuators. The use of high quality materials makesit possible to use these valves in the open air andunder chemical atmospheres.Note:These units may only be used in explosive atmospheresin the manner approved by the FederalInstitute of Physics and Technology (PTB), i.e., thepermissible maximum electrical values must becomplied with. Suitable barriers and isolating modulesare available for this.Circuit function Response times [ms]OpeningClosingC (3/2) 75 115H (5/2) 75 115Technical dataOrificeDN 8.0 mmBody materialPilot valve Stainless steel 1.4305 (303)Main valvePolyamide, glass-fibre reinforcedSeal materialFKM, NBR and PURMediaLubricated or unlubricated compressed air, instrumentair, nitrogenAmbient temperature-25 °C to +55 °C (-13 to 131 °F)Pneumatic connectionSupply ports 1, 3, 5 Threaded port NPT 1/4Service ports 2 and 4 Threaded port NPT 1/4Electrical connection Tag connectors acc. to DIN EN 175301-803(previously DIN 43650), Form A for connectorType 2508 (see Accessories). Ensure correct polarity!Protection classIP 65 with cable plugEnvironmental conditions Open air, chemical atmosphereElectrical dataType of protection II 2G EEx ia IIC T5T6 PTB01 ATEX2101, FM CL1, Div. 1, ABCDFunctional values for the valve switching functionat +20 °C (68 °F) at +55 °C (131 °F)Minimum switching current 29 mA 29 mANominal resistance of the coil 310 Ω 360 ΩMinimum terminal voltage 9.0 V 10.4 VPermissible maximum values acc. to certificate of conformityUi35 VIi0.9 APi1.1 WApprovalsPLCBarrier/isolatingcomponentNote:The valve is intended for operation on 24 VDC outputs via the intermediate switching of acorresponding intrinsically-safe operating resource (isolating module or barrier).If required, request the “Recommended Barrier and Isolating Module” data sheet.Subject to modifications