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4.45.11 Quick-lock couplings Series 21, DN 5 = 20 mm 2 In Brass Series of quick-lock couplings single shut off (only on the cou- For standard items, codes and dimensions see tables from page On request these couplings can be supplied (special execu- AISI 316. - With special seals (FKM or EPDM). Air, inlet-pressure 6 bar 0 100 200 300 400 500 600 700 0,7 0,6 0,5 0,4 0,3 0,2 0,1 0 Air flow, l/min Pressure drop (bar ) 21 KA cv = 0.844 Water 0 3 6 9 12 15 18 21 4,0 3,5 3,0 2,5 2,0 1,5 1,0 0 Water flow, l/min Pressure drop (bar ) 21 KA cv = 0.844 Technical data Fluid Compressed air, water, non-aggressive fluids Pressure range 35 bar (Vacuum resistance: 750 mm. Hg) Temperature range -20 °C ÷ 100 °C Parallel threads UNI - ISO 228/1 (BSP) Metric threads DIN 13 - DIN 2353 Materials Coupler body, valve, releasing sleeve: Brass OT58 Springs and elastic ring: Stainless steel AISI 301 Balls: Stainless steel AISI 420 Seals: Nitrile rubber (NBR) Version Type Coupling with male metric 21KAAD Coupling with male BSP 21KAAW Coupling with female metric 21KAIM Coupling with female BSP 21KAIW Coupling with hose adapter 21KATF Coupling with rapid fitting 21KAKO Coupling with bulkhead rapid fitting 21KAKS Coupling with bulkhead hose adapter 21KATS Coupling with rapid fitting 21KAKK Plug with hose adapter 21SFTF Plug with rapid fitting 21SFKO Plug with bulkhead rapid fitting 21SFKS Plug with bulkhead hose adapter 21SFTS Plug with rapid fitting 21SFKK Plug with male metric 21SFAD Plug with male BSP, 21SFAW Plug with male metric 21SFIM Plug with female BSP, 21SFIW |