Intrinsically safe pressure relief valves pilot operated, subplate or in line mounting - ATEX or IECEx certification

Transcription

1 able C-1/E Replaces E1-2/E Intrinsically safe pressure relief valves pilot operated, subplate or in line mounting - AE or IECEx certification Main poppet Valve main body Mechanical pressure limiter Cover Intrinsically safe pilot valve AGAM-1/1/**-WO AGAM, ARAM Intrinsically safe pressure relief valves equipped with solenoid pilot valve for venting or multiple pressure selection, certified for safe operation in hazardous environment with potentially explosive atmosphere. Certifications: AE or IECEx: II 1G Ex ia IIC, IIB, IIA surface plants zone, 1 and 2 AE or IECEx: IM2 Ex ia IMb, Ex ib IMb surface, tunnels or mining plants he valves must be electrically powered through specific safety barriers limiting the max current to the solenoid, see section 1. AGAM: pressure relief, subplate mounting Size: 1, 2 and 2 - ISO 24 Max flow: 2, 4 and l/min ARAM: pressure relief, threaded connections Size: 2 and 2 - G /4 and G 1 1/4 Max flow: and l/min Max pressure: bar 1 MODEL CODE AGAM / * - 2 / 2 / 21/1/1 - WO / * / ** / * Intrinsically safe pressure relief valves AGAM subplate mounting ARAM threated connections Certification type: - Omit for Atex Group II M Atex Group I (mining) IE IECEx Group II IEM IECEx Group I (mining) Valve size: 1 AGAM (ISO 24) 2 AGAM (ISO 24) 2 AGAM (ISO 24) 2 ARAM G /4 2 ARAM G 1 1/4 Configuration, see section 2 : Series number Options (2): E external pilot V regulating handweel for pressure adjustment W manual override Y external drain WO intrinsically safe solenoid Max regulated pressure of first (second / third) setting, see section 4 : bar 1 1 bar bar bar Connector type: DIN 4 (standard) Seals material, see section : - NBR E FKM B HNBR (1) (1) Not for certification M and IEM, Group I (mining) (2) ossible combined options: all combinations are available he pressure at port makes difficult the manual override operation that can be possible only if its value is lower than bar C

2 2 CONFIGURAIONS AND HYDRAULIC SYMBOLS AGAM-**/1 ARAM-**/1 one setting pressure + venting with de-energized solenoid ARAM-**/11 AGAM-**/11 one setting pressure + venting with energized solenoid AGAM-**/22 ARAM-**/22 two setting pressure without venting AGAM-**/2 ARAM-**/2 two setting pressure + venting with de-energized solenoid AGAM-**/21 ARAM-**/21 two setting pressure + venting with energized solenoid AGAM-**/2 ARAM-**/2 three setting pressure without venting GENERAL CHARACERISICS Assembly position / location Horizontal position only Subplate surface finishing to ISO 441 Acceptable roughness index, Ra,8 recommended Ra,4 - flatness ratio,1/1 MFd values according to EN ISO years, for further details see technical table 7 Ambient temperature Standard -2 C + C /E option -2 C + C /B option -4 C + C Storage temperature range Standard -2 C + C /E option -2 C + C /B option -4 C + C Surface protection Zinc coating with black passivation Compliance Intrinsically safe protection, see section 7 4 HYDRAULIC CHARACERISICS Valve size Max operating pressure [bar] port port, Y 21 Max regulated pressure [bar] 1 21 ressure range [bar] 4 ; 1; 7 21; 8 Max flow AGAM (1) [l/min] 2 4 Max flow ARAM (1) [l/min] - (1) see Q/Δp diagrams at section 11 and ELECRICAL CHARACERISICS - see also section 7 Nominal resistance at 2 C 1 Ω Coil insulation Class H Working voltage 2 V Minimum supply current ma, from I.S. barriers rotection degree I Duty factor 1% Electrical connector DIN 4 2 pin+gnd

3 SEALS AND HYDRAULIC FLUIDS - for other fluids not included in below table, consult our technical office NBR seals (standard) -2 C + C, with HFC hydraulic fluids -2 C + C Seals, recommended fluid temperature FKM seals (/E option) -2 C +8 C HNBR seals (/B option) -4 C + C, with HFC hydraulic fluids -4 C + C Recommended viscosity 1 1 mm 2 /s - max allowed range 2.8 mm 2 /s Max fluid contamination level ISO 44 class 2/18/1 NAS 18 class, see also filter section at or KF catalog Hydraulic fluid Suitable seals type Classification Ref. Standard Mineral oils NBR, FKM, HNBR HL, HL, HLD, HVL, HVLD DIN 124 Flame resistant without water FKM HFDU, HFDR Flame resistant with water NBR, HNBR HFC ISO 22 he ignition temperature of the hydraulic fluid must be C higher than the max solenoid surface temperature (1) erformance limitations in case of flame resistant fluids with water: -max operating pressure 21 bar -max fluid temperature C 7 CERIFICAION DAA Valve type AGAM ARAM AGAM/IE ARAM/IE AGAM/M ARAM/M AGAM/IEM ARAM/IEM Certification AE (Group II) IECEx (Group II) AE (mining) (Group I) IECEx (mining) (Group I) Solenoid code OW-18/ OWI-18/ OWM-18/ OWIM-18/ ype examination certificate (1) CESI 2 AE 1 IECEx CES.17 CESI 2 AE 1 IECEx CES.17 Method of protection Electrical characteristics (max values) Ex II 1G Ex ia Ex I M2 Ex ia I Mb Ex ib I Mb , 1,11, ,8 1,8, 1,4 1,72,82 emperature class Surface temperature (ambient temp. + C) Ui [V] Ii [ma] i [W] Ci, Li IIA Ga IIB Ga , 1, ,8 1,8, 1,4 1,72 1 C 8 C IIC Ga 1 C Ambient temperature -2 + C -4 + C (2) -2 + C Applicable standards EN 7-: 2+A11:21 EN 7-1:214 EN 7-1:214 IEC 7-:217 IEC 7-1:217-4 IEC 7-1:21 (1) he type examinator certificates can be downloaded from (2) Only for /B option WARNING: service work performed on the valve by the end users or not qualified personnel invalidates the certification C

4 8 OIONS E External pilot option to be selected when the pilot pressure is supplied from a different line respect to the main line. With option E the internal connection between port and of the valve is plugged. he pilot pressure must be connected to the port available on the valve s mounting surface or on main body (threaded pipe connection G ¼ ). E option V Regulating handweel for pressure adjustment W Manual override protect by metallic cap Blinded plug S-1A Y he external drain is mandatory in case the main line is subjected to pressure peaks or it is pressurized. he Y drain port has a threaded connection G ¼ available on the pilot stage body. Y option 11.1 ossible combined options: all combinations are available Y SOLENOIDS WIRING Connector wiring / Connections 1 Coil 2 Coil GND DIN 4 1 (A) 2 (C) 1 INRINSICALLY SAFE BARRIERS - see tech. table G1 Intrinsically safe valves must be powered through safety barriers certified according to Ex-ie protection mode, limiting the energy to the solenoid. o select the proper intrinsically safe barriers following data must be considered: 1) Vmax and Imax of the solenoid as specified in section 7 must not be exceeded also in fault conditions; 2) the resistance of the solenoid is 1 Ω and the current supplied by the barrier, in normal operation condition, must be over the min. limit ( ma) to ensure the valve correct operation (over ma for max performances). he barriers type Y-BNE 4 are galvanically isolated electronic devices, complying with European Norms EN7-/, EN7-11/7 and AE certified according to protection mode Ex ia IIC. hese barriers ensure the optimized functioning of the Atos valves up to the max operating limits specified in section 4. he barriers Y-BNE-4 are double channel type, suitable to operate valves with double or single solenoid. wo single solenoid valves can be connected to the barrier (one to each channel) but they cannot be contemporary operated. MODEL CODE OF I.S. BARRIER Y-BNE 4 * Supply voltage E 11/2 VAC VDC

5 11 REGULAED RESSURE VERSUS FLOW DIAGRAMS based on mineral oil ISO VG 4 at C Regulated pressure at port [bar] AGAM-1 AGAM-2 AGAM Regulated pressure at port [bar] Regulated pressure at port [bar] Regulated pressure at port [bar] ARAM Regulated pressure at port [bar] ARAM MINIMUM RESSURE VERSUS FLOW DIAGRAMS based on mineral oil ISO VG 4 at C 1 AGAM-1 1 AGAM-2 1. AGAM-2 Min. regulated pressure [bar] Min. regulated pressure [bar] Min. regulated pressure [bar] ARAM-2 1 ARAM-2 Min. regulated pressure [bar] Min. regulated pressure [bar] C

6 1 INSALLAION DIMENSIONS FOR AGAM-*-WO [mm] Valve s bottom view AGAM ISO 24: 27 (see table ) Mounting surface: Fastening bolts: 4 socket head screws Mx class. ightening torque Nm Seals: 2 OR ; 1 OR 1/ orts, : Ø 14, mm orts : Ø,2 mm port connection for external pilot (option /E) Y port connection for external drain (option /Y) AGAM-1/1 AGAM-1/11 AGAM-1/2 AGAM-1/21 AGAM-1/22 AGAM-1/2 Mass [kg],4 7, 7,2 1 AGAM-1/1/**-WO AGAM-1/11/**-WO Y G1/4 1 G1/4 ø 8. 1 AGAM-1/2/**-WO AGAM-1/21/**-WO AGAM-1/22/**-WO 1 Y G1/4 G1/4 2 1 AGAM-1/2/**-WO Option /W 1 1 Y G1/4 G1/ Mining version /M and /IEM (different cover shape) Ø1 Y G1/4 Option /V G1/4 2 1

7 AGAM ISO 24: 27 (see table ) Mounting surface: Fastening bolts: 4 socket head screws M1x class. ightening torque Nm Seals: 2 OR 41; 1 OR 1/ orts, : Ø 24 mm orts : Ø,2 mm AGAM-2/1 AGAM-2/11 AGAM-2/2 AGAM-2/21 AGAM-2/22 AGAM-2/2 Mass [kg] 7, 8,7 8,4 1,2 2.8 Valve s bottom view port connection for external pilot (option /E) Y port connection for external drain (option /Y) AGAM-2/1/**-WO AGAM-2/11/**-WO 11 1 Y G1/4 G1/4 4 ø AGAM-2/2/**-WO AGAM-2/21/**-WO AGAM-2/22/**-WO 1 1 Y G1/4 Y G1/4 G1/4 G1/ AGAM-2/2/**-WO Option /W Mining version /M and /IEM (different cover shape) 1 Y G1/4 G1/ Option /V Ø1 C

8 AGAM ISO 24: 27 (see table ) Mounting surface: (with M2 fixing holes instead of standard M18) Fastening bolts: 4 socket head screws M2x class. ightening torque Nm Seals: 2 OR 411; 1 OR 1/ orts, : Ø 28, mm orts : Ø,2 mm AGAM-2/1 AGAM-2/11 AGAM-2/2 AGAM-2/21 AGAM-2/22 AGAM-2/2 Mass [kg], 1,,8 11, Valve s bottom view port connection for external pilot (option /E) Y port connection for external drain (option /Y) 1 AGAM-2/1/**-WO AGAM-2/11/**-WO Y G1/4 11 G1/4 4 ø AGAM-2/2/**-WO AGAM-2/21/**-WO AGAM-2/22/**-WO 1 Y G1/4 Y G1/4 G1/4 G1/ AGAM-2/2/**-WO Option /W Mining version /M and /IEM (different cover shape) 1 Ø1 1 Y G1/4 Option /V G1/

9 14 INSALLAION DIMENSIONS FOR ARAM-*-WO [mm] ARAM-2 port connection for external pilot (option /E) Y port connection for external drain (option /Y) ARAM-2/1/**-WO ARAM-2/11/**-WO ARAM-2/1 AGAM-2/11 ARAM-2/2 AGAM-2/21 ARAM-2/22 AGAM-2/2 Mass [kg],7 8,4 8,1 1,1 ø4 G 1 4 ø. G /4.. ARAM-2/2/**-WO ARAM-2/21/**-WO ARAM-2/22/**-WO G1/4 Y G1/4 Y G1/4 G1/4 G1/ ARAM-2/2/**-WO Option /W Mining version /M and /IEM (different cover shape) 1 Ø1 Y G1/4 Option /V G1/ C

10 ARAM-2 port connection for external pilot (option /E) Y port connection for external drain (option /Y) ARAM-2/1/**-WO ARAM-2/11/**-WO ARAM-2/1 AGAM-2/11 ARAM-2/2 AGAM-2/21 ARAM-2/22 AGAM-2/2 Mass [kg] 7,, 8, 1,7 ø. G 1 1/ Y G1/4 G1/4 G 1 1/4 ø7 4. ARAM-2/2/**-WO ARAM-2/21/**-WO ARAM-2/22/**-WO 1 1 Y G1/4 1 1 Y G1/4 G1/4 G1/ ARAM-2/2/**-WO Option /W Mining version /M and /IEM (different cover shape) 1 1 Y G1/4 Option /V Ø1 G1/ RELAED DOCUMENAION 1 Basics for electrohydraulics in hazardous environments Summary of Atos intrinsically safe components range certified to AE, IECEx Operating and maintenance norms for intrinsically safe valves Mounting surfaces for electrohydraulic valves /1