Danfoss Hago 030L4508 4023 Series Nozzle. High Pressure Nickel Silver with Brass Internals. Includes O-Ring SPECIFICATIONS 0.60 GPH @ 160 PSI 416 Stainless Steel Nickel-Silver Plated O-Ring: Viton Filter: Sintered Bronze rated @ 31-40 microns Produces a Finely Automized Mist Immediate Mist Cut-Off With the #4023 no - drip nozzle operators can achieve this immediate cut-off while maintaining pressure within the nozzle supply system, thus assuring an immediate “sputter free” start-up and no entry of air into the supply line during the off cycle. The #4023 nozzle emits a finely atomized spray mist suitable for nearly all humidifying, light wetting and evaporative cooling applications in greenhouses, industry and agriculture. With this nozzle there is no need to install costly individual in-line check valves. Replaces All Hago 4023 Nozzles 030L3539, 030L3540, 030L3500 Hago 4023 Stainless Steel Low Pressure Anti-Drip Spray Nozzle. (20) , 030L3501 Hago 4023 Stainless Steel High Pressure Anti-Drip Spray Nozzle, 030L3522 Hago 4023 (79) Nickel Silver Low Pressure Anti-Drip Spray Nozzle, 030L3525 Hago 4023 Nickel Silver High Pressure Anti-Drip Spray Nozzle. (#88), 4023LP, 4023HP