ASCO 327 Valves - Hazardous Area ATEX IECEx 3 Way Direct Operated Solenoid Valves ¼" - ½"

ASCO 327 - Hazardous Area Solenoid Valves (ATEX)

ASCO 327 - ATEX & IECEx Solenoid ValvesASCO 327 Valves

ASCO 327 hazardous area solenoid valves are 3 way direct acting poppet valves available in Brass and Stainless Steel. Hazardous area solenoid valves for explosive atmospheres are available to meet ATEX & IECEX directives. (Other approvals available on request).

The “non breathing” design of the ASCO 327 solenoid valve ensures the external environment is kept where it belongs – external to the valve. This enables greater reliability and less chance for seizure.

Please use the product specification sheet to select the correct ASCO solenoid valve part number or alternatively contact a T&D sales engineer.

See more : ATEX Solenoid Valves – ASCO Valves for International Hazardous Area Installations 

Contact Us now for a quick quotation or click on request a quote and a member of our technical sales team will respond as soon as possible.

ASCO 327 Solenoid Valves

Hazardous Area ATEX Certified 3 Way Direct Acting Solenoid Valves

General Specification

Pipe Size

1/4" - 1/2"

Function Universal
Min/Max Temperature -40C / +120C
Fluid Type Air, Inert Gas, Water, Oil
Seal Type FPM, VMQ, (F)VMQ, NPR
Solenoid Valve Body Material Brass or Stainless Steel
Power Levels LP, RP, MP, BP
Hazardous Area Valve Options NEMA 7 & 9, ATEX IECEX. Please Contact T&D for Advice

ASCO 327 solenoid valves are an ideal solution for harsh industrial environments including offshore applications - certified according to IEC 61508 Functional Safety data and have SIL-4 capability (TÜV approval) and SIL-3 capability (Exida approval)

ASCO 327 Solenoid Valves - Product Features

  • PTFE rider rings and graphite-filled PTFE seals reduce friction and eliminate sticking
  • Solenoid coils used in metal enclosures have class H insulation materials
  • Dedicated execution for low power
  • Dedicated execution for extreme low ambient temperatures
  • Peak voltage suppression diodes are standard in DC solenoids with metal enclosures
  • The solenoid valves satisfy all relevant EC Directives
  • Manual Operators to suit ASCO valves are optional including an under pressure removable type 

ASCO 327 Video: the ASCO 327 hazardous area solenoid valves are universal, direct acting valve available in multiple variations of materials, power, flow and certification - available in Auto and Manual Reset executions. 

ASCO 327 Series - Hazardous Area Solenoid Valve Solutions

Nema 7 & 9, Ex d, Ex i, Ex e mb, Ex mb options are available with the ASCO 327 series solenoid valves. For full details and tailored solutions to meet your criteria, please contact T&D for advice and quotation.

ATEX, IECEx Hazardous Area DefinitionsATEX Hazardous Area - Solenoid Valves ASCO

Ex i Intrinsic Safety

A protection concept in which the electrical energy within the equipment is restricted to a level which is below that what may cause an ignition or to limit the heating of the surface of the equipment.

There are two main sub types to Ex i protection, these being “ia” and “ib”. Type “ia” protection allows for the occurrence of two faults during operation Type “ib” protection allows for the occurrence of one fault during operation.

Ex d Flameproof

The equipment that may cause an explosion is contained within an enclosure which can withstand the force of an explosion and prevent transmission to the outside hazardous atmosphere.

This method of protection also prevents the hazardous atmosphere from entering the enclosure and coming into contact with equipment.

Ex m Encapsulation

A protection concept where by equipment that could potentially cause an ignition is encapsulated within a compound or resin so as to prevent contact with the explosive atmosphere.

The concept also limits the surface temperature of the equipment under normal operating conditions.

Ex e Increased Safety

Precautions are applied to the installation to ensure increased security against the possibility of excessive temperatures and sparks from electrical equipment.

Equipment that normally causes sparks is excluded from use within this method of protection.

NEMA 7 Enclosures are for indoor use in locations classified as Class I, Groups A, B, C, or D and shall be capable of withstanding the pressures resulting from an internal explosion of specified gases, and contain such an explosion sufficiently that an explosive gas-air mixture existing in the atmosphere surrounding the enclosure will not be ignited.

Enclosed heat generating devices shall not cause external surfaces to reach temperatures capable of igniting explosive gas-air mixtures in the surrounding atmosphere. Enclosures shall meet explosion, hydro-static, and temperature design tests.

NEMA 9 Enclosures are intended for indoor use in locations classified as Class II, Groups E, F, or G, and shall be capable of preventing the entrance of dust.

Enclosed heat generating devices shall not cause external surfaces to reach temperatures capable of igniting or discoloring dust on the enclosure or igniting dust-air mixtures in the surrounding atmosphere.

Enclosures shall meet dust penetration and temperature design tests, and aging of gaskets (if used).

Contact T&D for prices and delivery on the complete range of ASCO solenoid valves for commercial, industrial and hazardous areas.

ASCO Solenoid Valves


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ASCO 327 Valves - Hazardous Area ATEX IECEx 3 Way Direct Operated Solenoid Valves ¼" - ½"
ASCO 327 Valves - Hazardous Area ATEX IECEx 3 Way Direct Operated Solenoid Valves ¼" - ½"

Heat Tracing - Thorne & Derrick