Features
• The monostable spool valves in conformity with IEC 61508 Standard (2010 route2H version) have TÜV (551 series) and EXIDA (551-553 series) certified with integrity levels: SIL 2 for HFT = 0 / SIL 3 for HFT = 1 • The solenoid operated spool valves have threaded port connections and "NAMUR" interface
• The same spool valve can be adapted for 3/2 NC or 5/2 functions for controlling doubleacting and single-acting actuators
• All the exhaust ports of the 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 valves offer environmental protection against the ingress of liquids, dusts or other foreign matter (environmentally-protected construction)
• Can be externally piloted (external air pilot supply) to convert valve to zero minimum operation by flipping a gasket
• The solenoid valves satisfy all relevant EU Directives.
GENERAL Differential pressure 2 - 10,4 bar [1 bar =100 kPa] Flow (Qv at 6 bar) 1/4 = 700 l/min (ANR) 1/2 = 3000 l/min
MATERIALS IN CONTACT WITH FLUID () Ensure that the compatibility of the fluids in contact with the materials is verified Body Aluminium, black anodized End cover (spring return) Glass fibre filled PA
Interface plates Glass fibre filled PA
Spool valve internal part Zamak, stainless steel, POM, aluminium
Pilot internal parts Refer to specific solenoid catalogue pages
Pilot end covers Aluminium
Core tube Stainless steel
Core and plugnut Stainless steel
Core spring Stainless steel
Seals NBR
