Product Name: Sidewall Type Water Curtain Nozzle Fire Nozzle Sprinkler Model NO.: ZSTM Nozzle Flow Coefficient: 16/21/27/34/42/53/68 L/Min Open Fire Sprinkler System Type: Drencher System Automatically Opened and Closed Repeatedly: Can't Automatically Opened and Closed Sprinkler Head Type: Open Sprinkler Installation: Pendent/Sidewall Norminal Diameter: 15mm/20mm/25mm Material: Brass/Stainless Steel Surface Finish: Chrome Working Pressure: 0.35MPa Flow Coefficient: 21/42/18/28/45/90/140/40/45/60 L/Min Spray Angle: 140/160 Use: Open Spray Fire Sprinkler System Trademark: SINCO/OEM Transport Package: Standard Export Carton Specification: 1/2"/3/4"/1" Origin: Quanzhou, Fujian HS Code: 8424 Product Description Sidewall type Water curtain nozzle fire nozzle sprinklerDescriptionWater curtain nozzle, which is the main component of water curtain system, can distribute pressure driven water into curtain shape at certain width and thickness to reach the purpose of stopping fire from spread, absorbing heat and isolating the smoke, widely used in the door, window, hole of buildings, large factories, workshops, halls, theaters, stages or the area between adjacent buildings.Technical parametersModel specificationDimension(mm)Flow coefficientSpraying angle(°)Connect threadZSTMA21-14025x28x3521140±10R1/2ZSTMA42-14030x34x3042140±10R3/4ZSTMB18-16025x28x3218160±10R1/2ZSTMB28-16025x28x3228160±10R1/2ZSTMB45-16025x28x3545160±10R1/2ZSTMB90-16030x34x3590160±10R3/4ZSTMB140-16030x34x35140160±10R3/4ZSTMC40-16025x28x4240160±10R1/2ZSTMC45-16030x34x5445160±10R3/4ZSTMC60-16042x48x7260160±10R1PhotoesOther Fire fighting Equipment