16 Transportation Railway Nominal Diameter 3/6/9/12 Parker Series NSI Max. Working Pressure 20 bar maximum static working pressure with design factor 4 to 1. Material Coupling: Brass/Stainless Steel Plug: Brass/Stainless Steel Seals: FKM Applications • Air Conditioning Systems / Electronic Cooling Flow diagrams Working Temperature -20°C up to +200°C (FKM) depending on the medium. Special seals up to 250°C are available on request. Technical Description The NSI are dry-break couplings with flat face valves. The compact design make them suitable for reduced spaces. Coupling system with two-hand operation, i.e. both hands are required when connect/disconnect. Advantages • No spillage during connection/disconnection. • Low pressure drop. • Excellent resistance to vibrations and mechanical stresses. Dry-Break 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0 2 4 6 8 10 12 14 16 pressure drop (bar) flow (L/mn) NSI Ø6 water 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 0 0,5 1 1,5 2 2,5 3 3,5 pressure drop (bar) flow (L/mn) NSI Ø3 water 0 0,05 0,1 0,15 0,2 0,25 0,3 0,35 0,4 0,45 0,5 0 10 20 30 40 50 60 70 80 90 pressure drop (bar) flow (L/mn) NSI Ø12 water Water Pressure Drop (bar) Flow Rate (l/min) 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 0 10 20 30 40 50 60 70 pressure drop (bar) flow (L/mn) NSI Ø9 (water) Flow Rate (l/min) Water Pressure Drop (bar) Water Water Pressure Drop (bar) Pressure Drop (bar) Flow Rate (l/min) Flow Rate (l/min) Applications Area
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