ASCO 551 553 Solenoid Valves (Spool) 5/2, ¼”-1/2” Stainless Steel (30 Pilots) – Hazardous Area Valves Ex d, Ex ia

Product Overview

ASCO 551 553 hazardous area solenoid valves are pilot operated or air operated spool type valves suitable for hazardous areas installation with international classifications including ATEX, UL, CSA and other local approvals on request.

5/2 Way Solenoid Valve

NC – Normally Closed Valve

NO – Normally Open Valve

Via ASCO Numatics FASTSHIP and SAMEDAY Express Delivery Service we are able to deliver 2,000+ ASCO valves from stock direct to you.

Asco 551 553 Solenoid Valves

• The ASCO monostable spool valves in conformity with IEC 61508 Standard (2010 route 2H version) have TÜV (551 series) and EXIDA (551-553 series) certified with integrity levels: SIL 2 for HFT = 0 / SIL 3 for HFT = 1
• Series 551 versions according to ATEX 94/9/EC, for zones 0, 1 and 2 and series 553 air-operated versions for zones 1 and 2
• The 3/2 NC solenoid operated spool valves have threaded port connections
• All the exhaust ports of this spool valve are connectable, providing better environmental protection, particularly recommended for sensitive areas such as clean rooms, and applications in the pharmaceutical and food processing sectors
• The solenoid valve offers environmental protection against the ingress of liquids, dusts or any other foreign matter (environmentally-protected construction)
• The solenoid valves satisfy all relevant EC Directives

Differential Pressure : 2 – 10, 4 bar [1 bar = 100kPA]

Flow (Qv at 6 bar): 1/4 = 860 l/min (ANR)

1/2 = 3000 l/min

Asco 551 553 – Valve Fluid Contact Compatibility

ASCO 551-553 solenoid valves are available with NAMUR interface. NAMUR, translated from the German acronym to StandardiSation Association for Measurement and Control in Chemical Industries, is the specification for a standard interface between pneumatic actuators, solenoid valves and directional control valves.

ASCO 551 553 – valve ELECTRICAL CHARACTERISTICS

Valve Coil Insulation Class : F

Electrical Safety : IEC 335

Standard Valve Voltages : DC (=) 24V – 48V

AC (~) 24V – 48V – 115V – 230V/50Hz; other voltages and 60Hz are available on request

Asco 551 553 – Valve Specifications – Cnomo Solenoid Pilot Operated

*Select 8 for NPT ANSI 1.20.3 or select G for ISO G (228/1)

Asco 551 553 – Valve Options

• Mounting on aluminium supply rail, 1/4 or 1/2
• Other pipe threads are available on request

ASCO SOLENOID VALVES – ATEX, IEC EX & NEMA hazardous area CERTIFIED

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