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ASCO 551-553 Valves | Ex e mb Increased Safety Encapsulated Aluminium Solenoid Valves 3/2 NC

ASCO Solenoid Valves | Ex e mb Increased Safety & Encapsulated

ASCO Solenoid Valves | Ex e mb Increased Safety & Encapsulated

asco eX e mb solenoid valves

increased safety & encapsulated

551-553 3/2 Nc

ASCO 551-553 explosion proof solenoid 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.

These solenoid valves are supplied with ASCO EM or WSEM Increased Safety & Encapsulated valve operators.

eX E MB INCREASED SAFETY ENCAPSULATED solenoid Valves

features

  • The  3/2 NC 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 e mb 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
ASCO Solenoid Valves & Valve Operators are ATEX & IECEx certified for Class I, Division 2 and Zone 1 & Zone 2 hazardous areas.

asco 551-553 EX E MB solenoid valves

specification

Differential Pressure: 2 – 10,4 bar [1 bar =100 kPa]
Flow (Qv at 6 bar): 1/4 = 860 l/min (ANR) | 1/2 = 3800 l/min
Fluids: air, inert gas, filtered
Temperature Range: -25°C to +60°C
Seal Materials: NBR (nitrile) + PUR (polyurethane)

Type EM:

  • Waterproof IP66/67 – Metal enclosure (EN/IEC 60079-7,-18 and -31)
  • ATEX/IECEx valves using these solenoids are approved according to EN ISO 80079-36 (2016) and EN ISO 80079-37 (2016) [non electrical]
ASCO Solenoid Valves | Type 04

ASCO Solenoid Valves | Type 04

TYPE 04: Metal, epoxy coated / AISI 316L SS | EM / WSEM: EN/IEC 60079-7+18+31

Order Codes: 551B405 / B406 / B405MO / B406MO / 553A405 / A406 / A405MO / A406MO

ASCO Solenoid Valves | Type 04 | Dimensions (mm)

ASCO Solenoid Valves | Type 04 | Dimensions (mm)

Type WSEM:

  • Waterproof IP66/67 – 316 SS enclosure (EN/IEC 60079-0+7+18+31)
  • ATEX/IECEx valves using these solenoids are approved according to EN ISO 80079-36 (2016) and EN ISO 80079-37 (2016) [non electrical]
ASCO Solenoid Valves | Type 09

ASCO Solenoid Valves | Type 09

TYPE 09: Metal, epoxy coated / AISI 316L SS | EM / WSEM: EN/IEC 60079-7+18+31

Order Codes: 551B305 / B306 / B305MO / B306MO / 553A305 / A306 / A305MO / A306MO

ASCO Solenoid Valves | Type 09 | Dimensions (mm)

ASCO Solenoid Valves | Type 09 | Dimensions (mm)

âž¡ For full specification see attached data sheet.

asco ex e mb valves – ordering information

Pipe Size Orifice Size Flow Coefficient Kv Operating Pressure Differential (bar) Power Level Ex e mb
Prefix		 Thread Type ASCO Order Code
Minimum* Maximum (PS)
Air
(m³/h) (l/min) ∼ = ∼/=
Solenoid air pilot operated – spring return (monostable)
1/4 6 0.75 12.5 0 / 2 10 10 Basic Power EM NPT ANSI 1.20.3 8551B405**
ISO G (228/1) G551B405**
Low Power NPT ANSI 1.20.3 8551B305**
ISO G (228/1) G551B305**
1/2 13 3.15 52.5 Basic Power NPT ANSI 1.20.3 8553A405**
ISO G (228/1) G553A405**
Low Power NPT ANSI 1.20.3 8553A305**
ISO G (228/1) G553A305**
Solenoid air pilot operated and return (bistable)
1/4 6 0.75 12.5 0 / 2 10 10 Basic Power EM NPT ANSI 1.20.3 8551B406
ISO G (228/1) G551B406
Low Power NPT ANSI 1.20.3 8551B306
ISO G (228/1) G551B306
1/2 13 2.49 41.5 Basic Power NPT ANSI 1.20.3 8553A406
ISO G (228/1) G553A406
Low Power NPT ANSI 1.20.3 8553A306
ISO G (228/1) G553A306

* Zero minimum is only achieved if external pressure is applied.

**Use suffix “SL” where IEC 61508 Functional Safety data certification is required.

asco 551-553 valves – dimensions

Type ASCO 551 – 553 3/2 NC

ASCO 551 - 553 3/2 NC Solenoid Valves | Dimensions (mm)

ASCO 551 – 553 3/2 NC Solenoid Valves | Dimensions (mm)

electrical characteristics & connections

Coil insulation class: F
Electrical safety: IEC 335
Standard voltages: DC (=) 24V – 48V | AC (~) 24V – 48V – 115V – 230V/50Hz; (other voltages and 60Hz are available on request)

Basic Power – Type 04

  • Power Ratings – Inrush (VA): 55, Holding (VA): 23, Holding (W): 10.5, Hot/Cold (W): 9/11,2
  • Operator Ambient Temperature Range (TS) : -40°C to +40°C
  • Hazardous Area Safety Code: II2G Ex eb mb IIC Gb T3, II2D Ex tb IIIC Db
  • Electrical Enclosure Protection (EN 60529): IP66/67, steel /SS
  • Electrical Connections: M20 plastic cable gland for cables with an outer diameter from 7 to 12 mm

Low Power – Type 09

  • Power Ratings – Inrush (VA): 1.5, Holding (VA): 1.5, Holding (W): 1.5, Hot/Cold (W): 1,7/1,7
  • Operator Ambient Temperature Range (TS) : -40°C to +40/55°C
  • Hazardous Area Safety Code: II2G Ex eb mb IIC Gb T6/T5, II2D Ex tb IIIC Db
  • Electrical Enclosure Protection (EN 60529): IP66/67, steel /SS
  • Electrical Connections: M20 plastic cable gland for cables with an outer diameter from 7 to 12 mm

 

ASCO Solenoid Valves

Certified For Hazardous Area Flow Control | ATEX Valves

 

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