ASCO 551 Series, 3 way ¼” Pilot Operated Solenoid Valve

ASCO 551 Series, 5 Way ¼ Pilot Operated Solenoid Valve

ASCO 551 series 3 way ¼” pilot operated solenoid valve is available in many different configurations and have TÜV certified IEC 61508 Functional Safety data and can be used up to SIL 4.

Each exhaust port of the spool is connectable providing enhanced environmental protection and is particularly recommended for sensitive areas such as  clean rooms, and applications in the pharmaceutical and food processing sectors.

The ASCO 551 series 3 way ¼” pilot operated valve offers environmental protection against the ingress of liquids, dusts and any other foreign matter and can be externally piloted (external air pilot supply) to convert valve to zero minimum operation by flipping a gasket.

ASCO 551 Series, Pilot Operated Spool Type Solenoid Valve, Brass Body – General Specification

Differential Pressure Flow (Qv at 6bar) Fluids Seal Material Temperature Range
2-10bar (1bar = 100kPa) 860l/m (ANR) Air, Inert Gas, Filtered VMQ (Silicone) + PUR (Polyurethene) -40C / +60C

ASCO 551 Series, 3 way ¼ Solenoid Valve Additional Options

  • Valves configured for external pilot air supply, TPL 20547
  • Other pipe threads are available on request
  • Ex mb/mD (prefi x “PV”) solenoid can be supplied with various cable lengths
  • Compliance with “UL”, “CSA” and other local approvals available on request
  • 1/2″ NPT (prefi x “T”) and M20 x 1.5 (prefi x “ET”) conduits (aluminium or 316 SS) available for steel solenoid housing

Data Sheets