CTG UG20 BR GENERAL PURPOSE SPRAY NOZZLES www.pnr- INTRODUCTION INDEX TECHNICAL PUBLICATIONSNOTES TECHNICAL PUBLICATIONS Pnr manufactures a complete range of spray nozzles for industrial application, as well as products and systems specially designed for specific industries. Information about our Company and our product range is available through the following publications. PRODUCT RANGE CTG TV11 GENERAL PURPOSE SPRAY NOZZLESCTG UG20 AIR ASSISTED ATOMIZERS CTG AZ18 COMPLEMENTARY PRODUCTS AND ASSEMBLY FITTINGSCTG AC20 INDUSTRIAL TANK WASHING SYSTEMSCTG LS20 EVAPORATIVE COOLING SYSTEMSCTG LN16 FIRE FIGHTING PRODUCTS CTG FF10 PAPERMILL PRODUCTSCTG PM10 STEELWORK NOZZLESCTG SW20 SPRAYDRY NOZZLESCTG SP10 As a result of continuous product improvement our documentation is regularly updated and mailed to Customers whose name and address are registered into our Catalogue Mailing List. We shall gladly register your name if you mail to the nearest PNR office or Distributor the form on page 57, duly filled with the required information. NOTES Our products and their performances are continuously reconsidered and modified to keep up with the latest state of technology. We regret not to able to give our Customers previous advice about these modifications: for this reason the data and product specifications given in our Catalogues are always to be understood as being indicative, and do not firmly engage our Company. In case your application should imperatively require that one or more characteristics of one of our products as given by the Catalogue is strictly adhered to, we ask you to obtain a written confirmation about your requirements before sending your order. All information contained into this Catalogue, including product data, product codes, diagrams and photographs are the exclusive property of Flowtech. It is forbidden to reproduce any part of this Catalogue without having obtained written permission from Flowtech. Dimensions in this Catalogue are given in millimetres (mm). All threads are made according to the ISO 228 standards. (European norms BS 2779 DIN 259 UNI 338). Explanations about the abbreviations used in the Catalogue are given on page 57. All mentioned Trademarks are the property of their respective owners. Please read our Warranty conditions on page 57. INDEXPage SPRAY TECHNOLOGY 1 SPRAY PATTERNS 3 NOZZLE IDENTIFICATION CODES 5 FULL CONE NOZZLES6 FLAT JET NOZZLES 27 HOLLOW CONE NOZZLES 46 PNR PRODUCT RANGE55 ADDITIONAL INFORMATION57 Our factory has qualified our Quality System through DNV to the Norms ISO 9001/2000 www.pnr- The process of spraying a liquid can be described as composed of two phases, namely: 1 Breaking up the liquid into separated drops. 2 Directing the liquid drops onto a surface or an object, to achieve the desired result. The above two phases are normally performed, by the types of nozzles being used in industrial processes, at the same time by means of different techniques which shall be illustrated in the following. The continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient way. It is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics, in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application. Spraying a liquid through a spray nozzle can serve different purposes, among which the most important are the following: 1 Cooling, by means of heat transfer between the product itself and the liquid running on its surface. 2 Washing, where the water directed onto the product takes away dirt or undesired substances from the product surface. 3 Humidifying, with sprays carrying very little liquid quantities to the product surface,into a chamber or into a room. 4 Metering the desired liquid quantity in a unit of time into the product being handled. 5 Applying a product on a surface, as in the case of spray painting or surface pre-treatment before painting. 6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry. It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type, flow value, spray angle, drop dimensions and nozzle material are made. The purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application. SPRAY NOZZLES A spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into drops. Its performances can be identified and described precisely, so that the design engin