ASCO 327 Series | Ex ia Intrinsically Safe ATEX IECEx Solenoid Valves 3/2
ASCO 327 Series | Ex ia Intrinsically Safe Solenoid Valves 3/2
eX ia intrinsically safe
ASCO 327 series solenoid Valves
ASCO 327 series are direct operated, basic flow, balanced poppet explosion proof solenoid valves which are certified for installation in potentially explosive atmospheres located in hazardous areas.
The basic flow solenoid valves with Intrinsically Safe IEC explosion protection techniques, are suitable for use in hazardous areas, when used in applications with ASCO NFIS or WSNFIS Operators.
They are recommended for pilot applications with basic flow, wide pressure ranges and no minimum operating pressure can be used in areas which are subjected to extreme low ambient temperatures. Solenoid valve enclosure has a cable gland with integral strain relief for cables with an o.d. from 7 to 12 mm and housing is provided with an internal and external connection facility for an earthing or bonding conductor.
Hazardous Area Classification
The intrinsically safe solenoid valves are compliant with International and European Standards IEC 61508 Functional Safety data and have SIL-3 capability (TÃœV & Exida certification).
NFIS & WSNFIS Operators
ATEX/IECEx valves using these solenoids are approved according to EN 13463-1 (non electrical)
NFIS – I.S. with Aluminium IP66/IP67 enclosure (EN/IEC 60079-11+31)
WSNFIS – I.S. with 316L SS IP66/IP67 enclosure (EN/IEC 60079-11+31)
ASCO – Hazardous Area Solenoid Valves With ATEX & IECEx Certification
asco 327 series solenoid valves – specification
- Differential pressure: 0 – 10 bar [1 bar = 100kPa]
- Maximum viscosity: 65cST (mm²/s)
- Response times: 75 – 100 ms (Energising time for Ex i booster coils will be < 2 sec)
- Compatible fluids: air, inert gas, water & oil
| Pipe Size | Orifice Size | Flow Coefficient Kv |
Operating Pressure Differential (bar) | Power Level | ATEX | Thread Type | ASCO Order Code | |||
| Minimum | Maximum (PS) | |||||||||
| Air/Water | ||||||||||
| (mm) | (m3/h) | (l/m) | ∼/= | ∼/= | Ex ia Prefix | Brass | Stainless Steel | |||
| U – Universal, FPM sealings and poppets (minimum fluid temperature -20°C) | ||||||||||
| 1/4 | 5.7 | 0.45 | 7.5 | 0 | 10 | Low Power 0.5 – 1.8 Watts |
NFIS | NPT ANSI 1.20.3 | 8327B301 | 8327B302 |
| ISO G (228/1) | G327B301 | G327B302 | ||||||||
| U – Universal, (F)VMQ sealings and poppets (minimum fluid temperature -50°C) | ||||||||||
| 1/4 | 5.7 | 0.45 | 7.5 | 0 | 10 | Low Power 0.5 – 1.8 Watts |
NFIS | NPT ANSI 1.20.3 | 8327B311 | 8327B312 |
| ISO G (228/1) | G327B311 | G327B312 | ||||||||
Explanation of the Temperature Ranges of Solenoid Valves
- Valve Temperature Range: The valve temperature range (TS) is determined by the selected seal material, the temperature range for proper operation of the valve and sometimes by the fluid (e.g. steam)
- Operator Ambient Temperature Range: The operator ambient temperature range is determined by the selected power level and the safety code
- Total Temperature Range: The temperature range of the complete solenoid valve is determined by the limitations of both temperature ranges above
| ASCO 327 Series Ex ia Intrinsically Safe Solenoid Valves | |
| Temperature Range (TS) |
Seal Material |
| -20 to +120°C | FPM (fluoroelastomer) |
| -40 to +40°C | VMQ (silicone) |
| -60 to +60°C | (F)VMQ ((fluor)silicone) |
Electrical characteristics & connections
Coil Insulation Class: H(1)/ F(2)
Electrical Safety: IEC 60335-1
Standard voltages: DC (=) 24V – 48V; Allowable voltage variation ± 10% | AC (~) 24V – 48V – 115V – 230V/50/60Hz (Other voltages available on request)
Power Ratings – Low Power – NFIS & WSNFIS
Inrush ∼ (VA) – 0.5
Holding ∼ (VA) – 0.5 | (W) 0.5
Hot/Cold = (W) – 1.5/1.8
Operator Ambient Temperature Range (°C) – -40 to +60
Hazardous Area Safety Code: II2G Ex ia IIC T6 Gb, II2D Ex tb IIIC Db
Electrical Enclosure Protection (EN 60529) – IP66/67, Aluminium/Stainless Steel
Connection – M20 plastics cable gland for cables with an outer diameter from 7 to 12 mm
ASCO Type – 05
asco 327 series dimensions
NFIS / WSNFIS : TYPE 05: Aluminium, epoxy coated / AISI 316L Stainless Steel, EN/IEC 60079-11, 60079-31
Weight: NFIS – 2.65 kg | WSNFIS – 3.75 kg
ASCO Ex ia Intrinsically Safe Solenoid Valves | ASCO 327 Series Dimensions (mm)
| ASCO 327 Series Valves – Dimensions | |
| A | 97 mm |
| B | 30 mm |
| C | 11 mm |
| D | 24 mm |
| E | 97 mm |
| F | 146 mm |
| G | 102 mm |
| H | 54 mm |
| J | 55 mm |
| K | 29 mm |
| L | 23 mm |
| M | 199 mm |
| R | 83 mm |
Explosion Proof Valve Operators – ASCO Solenoid Valves & Valve Operators are ATEX & IECEx certified for Class I, Division 2 and Zone 1 & Zone 2 hazardous areas.
Flameproof | Encapsulated | Increased Safety | Intrinsically Safe | Non-Sparking Explosion Proof
ASCO 327 Series | Ex ia Intrinsically Safe ATEX IECEx Solenoid Valves | Data Sheet
Download
