ASCO 551, 553 Series - pilot operated or air operated, spool type single/dual solenoid or air Stainless Steel Body, "NAMUR" style, ¼"

ASCO 551, 553 Series Pilot Operated or Air Operated Spool Valve with Namur Interface

¼” – ½” Pilot Operated or Air Operated Spool Type, Single/Dual Solenoid

ASCO 551, 553 Series pilot operated, spool type solenoid valves with Namur interface are available in many different configurations to suit a wide variety of applications and safety directives. Please use the product specification sheet to select the correct ASCO solenoid valve part number or alternatively contact a T&D sales engineer.

ASCO 551, 553 Series - pilot operated or air operated, spool type single/dual solenoid or air Stainless Steel Body, "NAMUR" style, ¼" – Specification
Differential Pressure 2-10bar (1bar = 100kPa)
Flow (Qv at 6bar) ¼”    700l/m (ANR)
½”    3000l/m
Fluids Air, Inert Gas, Filtered
Temperature Range -40C / +80C
Seal Material VMQ (Silicone) + PUR (Polyurethene)

ASCO Series 551Series Solenoid Valves, Namur Interface, Aluminium Body

• The monostable spool valves have TÜV-EXIDA certified IEC 61508 Functional  Safety data and can be used up to SIL 4 (551TÜV)-SIL 3 (552-553/EXIDA)

• The spool valves have threaded port connections and "NAMUR" style interface

• The same spool valve can be adapted for 3/2 NC or 5/2 function for controlling  double-acting and single-acting actuators

• 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 valve offers environmental protection against the ingress of liquids, dusts or  any other foreign matter (environmentally protected construction.

• Epoxy moulded coil for general service applications

• The solenoid valves satisfy all relevant EC Directives

Hazardous Area Pilot Operated Solenoid Valve Solutions – ASCO 551 Series.

Please see product specification for ATEX, IECEx, Ex d and EX ia hazardous area options.

ASCO NAMUR Interface

For those applications where a Namur interface is essential, ASCO have the products to suit. Ideal for close-coupling a solenoid valve to an actuator or to a positioned, a Namur interface ensures standard mounting dimensions and reduces the need for extensive engineering. A Namur interface prevents the actuator breathing air from the environment which is a potential source of failure.

ASCO 551, 553 Series - pilot operated or air operated, spool type single/dual solenoid or air Stainless Steel Body, "NAMUR" style, ¼"

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ASCO 551, 553 Series - pilot operated or air operated, spool type single/dual solenoid or air Stainless Steel Body, "NAMUR" style, ¼"
ASCO 551, 553 Series - pilot operated or air operated, spool type single/dual solenoid or air Stainless Steel Body, "NAMUR" style, ¼"

Heat Tracing - Thorne & Derrick