ASCO 401 Solenoid Valves – Pilot Operated Slide Valve (4 Way)

ASCO 401 solenoid valves. T&D are an ASCO Numatics Authorised Distribution Channel.

ASCO 401 solenoid valves. T&D are an ASCO Numatics Authorised Distribution Channel.

ASCO 401 solenoid valves are part of the ASCO Red Hat range of valves.

  • Manufacturer : ASCO
  • Product : Solenoid Valve
  • Type : Pilot operated
  • Series : ASCO 401
  • Valve Body : Aluminum
  • Valve Voltage : 12, 24 VDC +10%, -5%
  • Flow Control Media : Air: Inert Gas
  • Valve Function : 4 Way: 5/2



    • Unique sliding, sealing member
    • Optional flow control regulates cylinder speed in either direction
    • Dual solenoid versions hold last position, even after loss of electric power
    • Dual solenoid operation: solenoid may be energized momentarily (1/10 second) or continuously
    • Air/inert gas service only
    • Durable and “non-sticking” sealing method
    • Standard manual operator both momentary and maintained
    • CSA certified and meets CE directives


ASCO 401 Solenoid Valves – Product Construction

Valve Parts in Contact with Fluids
Main Valve Body, Sub- and Manifold Base, End Caps Aluminum
Pilot Valve Body Molded CA
End Caps Stainless Steel (non-metering) Molded CA (metering)
Seals NBR (Carboxylated Nitrile)
Spool Molded Delrin
Slide Molded Delrin
Flow Plate Ceramic (alumina)
Core Tube 305 Stainless Steel
Core and Plugnut 430F Stainless Steel
Core and Plugnut 302 Stainless Steel

Hazardous Area LOCATIONS Certification

ASCO 401 valves are CSA certified – available with explosion-proof solenoid enclosure and also UL listed for fire protection systems. CSA certified solenoid valve. T&D distribute the complete range of hazardous area solenoid valves manufactured by ASCO.

Hazardous Area Solenoid Valves

ASCO Hazardous Area Solenoid Valves ATEX • CSA • FM • UL • IECEx • NEPSI • INMETRO • TR CU


ASCO solenoid valves (2-way, 3-way and 4-way type including NAMUR interfaces) control the critical flow of air, gas, water, oil and steam across all industries – hazardousSIL IEC 61508 - Solenoid Valves area solenoid valves are available for Division and Zone classifications.

Class I, Division 2 and Zone 1/Zone 2 approved solenoid valves according to ATEX, IECEx, FM, CSA and UL are available. Flameproof and explosion-proof valves can be specified for potentially explosive atmospheres where there is a presence of flammable liquids, gases or vapours.

ASCO valves improve reliability and performance of safety systems according to IEC 61508, IEC 61511 and Safety Integrity Levels (SIL) – ASCO spool valves with SIL 4 capability are SAEL listed as assessed by Exida and TÜV.

➡ Did you know? T&D Exports support the global oil, gas and petrochemical industries providing a single-source supply capability of Hazardous Area Equipment across Electrical, Mechanical, Process & Instrumentation ranges.

Solenoid Valves ASCO

Data Sheets