ASCO 551-553 Valves | Exd Flameproof ATEX IECEx Solenoid Valves 5/2 5/3 (Aluminium)
Ex d Flameproof Solenoid Valves | ASCO 551-553 5/2 5/3
eX D Flameproof
ASCO 551-553 solenoid Valves
ASCO 551-553 Exd Flameproof Valves are single/dual solenoid valves, which are pilot operated, have an aluminium body and are 1/4 and 1/2 tapped.
The monostable spool valves are manufactured and certified for hazardous area use according to IEC 61508 Standard (2010 route 2H version) and are TÃœV (551 series) and EXIDA (551-553 series) certified with integrity levels: SIL 2 for HFT = 0 / SIL 3 for HFT = 1.
eX D Flameproof solenoid Valves
features
- The 5/2 and 5/3 spool solenoid valves have threaded port connections
- In order to provide better environmental protection against the ingress of liquids, dusts and other foreign matter, all of the exhaust ports are connectable. This is particularly recommended for sensitive areas, such as clean rooms, and applications within the pharmaceutical and food processing sectors
- The Ex d flameproof solenoid valves can be externally piloted via an external air pilot supply, in order to convert the valve to zero minimum operation by flipping a gasket
- The solenoid valves can be mounted in any position without affecting operation
- Ex mb/mD (prefix “PV”) solenoid can be supplied with various lengths of cable
- Other pipe threads are available on request
asco 551-553 solenoid valves
specification
Differential Pressure: 2 – 10,4 bar [1 bar =100 kPa]
Flow (Qv at 6 bar): 1/4 = 860 l/min (5/2) ; 760l/min (5/3) (ANR) | 1/2 = 3800 l/min (5/2, 5/3)
Fluids: air, inert gas, filtered
Temperature Range: -25°C to +60°C
Seal Materials: NBR (nitrile) + PUR (polyurethane)
Materials In Contact With Fluid
| Body | Aluminium, black anodised |
| End cover (spring return) | Glass-filled PA |
| Spool valve internal parts | Zamak, stainless steel, POM, aluminium |
| Pilot end covers | Aluminium |
| Core tube | Stainless steel |
| Core and plugnut | Stainless steel |
| Core spring | Stainless steel |
| Seals | NBR (Nitrile Butadiene Rubber) |
| Top disc | PA (Polyamide Nylon) |
| Disc holder | POM (Polyoxymethylene) |
| Cartridge (low power) |
Welded, stainless steel or aluminium |
| Seat |
Brass |
| Seat insert |
POM (Polyoxymethylene) |
| Shading coil |
Copper |
| Rider rings (low power) |
PTFE (NF/WSNFÂ solenoids only) |
âž¡ The complete specification for the full range of ASCO 551-553 flameproof solenoid valves is available in the Data Sheet.
asco 551-553 valves – dimensions
Type ASCO 551 – 553
- A (551 Series) – 2 mounting holes: 5,3 mm dia.; Spotfacing: 9 mm dia., depth 5 mm
- B (553 Series) – 2 mounting holes: 6,5 mm dia.; Spotfacing: 11 mm dia., depth 6 mm
ASCO 551 – 553 Flameproof Valves | Dimensions (mm)
Certified For Hazardous Area Flow Control | ATEX Valves
Flameproof | Encapsulated | Increased Safety | Intrinsically Safe | Non-Sparking Explosion Proof
ASCO 551-553 Valves | ATEX IECEx Solenoid Valves 5/2 5/3 (Aluminium) | Data Sheet
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