Water Curtain Nozzle distributes water in a flat curtain extending all the way to the ground. Water Curtain Nozzle when mounted in pendent position acts as a window spray nozzle to protect interior walls, windows and other openings of the building which are affected by fire. The nozzles when mounted in horizontal position with flow towards ground, a flat water curtain are produced to segregate the area which is under fire. Water Curtain Nozzles are available in Brass and Stainless Steel construction with different flow rate. MAXIMUM WORKING PRESSURE 12 Bar (175 PSI)EFFECTIVE WORKING PRESSURE 1.4 - 3.5 bar (50 - 150 PSI)END CONNECTION " BSPT, (NPT OPTIONAL)INCLUDED WATER SPRAY ANGLE FOR EACH K-FACTOR 140, 120, 110, 100, 90, 80 & 65ORIFICE SIZE AND MM (INCH) METRIC (US) K-FACTOR K23K30K37K45K53K72K98K120K140FINISH Brass finish, Chrome plated Brass (Optional)Strainer Option Available