76 www.nordsonefd.com info@nordsonefd.com USA & Canada 800-556-3484 Europe 00800 7001 7001 Asia +86 (21) 3866 9006 Spray Valves Piston and Needle Stroke Control Stroke Reference Piston Spring Air Cylinder Body Packing Spring Needle Packings Fluid Body Air Cap Retainer Fluid Inlet 1/8 NPT Mounting Hole 1/4-28 UNF Nozzle Air Cap Actuating Air Input 10-32 UNF Nozzle Air Input 10-32 UNF 781S Series General Purpose Spray Valve 7007031 781S-SS Spray Valve Nozzle size is 1.17 mm (0.046") diameter. Round pattern, narrow angle. All metal parts are passivated 303 stainless steel. 7021600 781S-AL Spray Valve Nozzle size is 1.17 mm (0.046") diameter. Round pattern, narrow angle. Fluid body and air cylinder body are aluminum. 7021615 781S-SS-46F Nozzle size is 1.17 mm (0.046") diameter, fan shape. All metal parts are passivated 303 stainless steel. 7021611 781S-SS-14 Nozzle size is 0.36 mm (0.014") diameter. Round pattern, narrow angle. All metal parts are passivated 303 stainless steel. 7021613 781S-SS-28 Nozzle size is 0.71 mm (0.028") diameter. Round pattern, narrow angle. All metal parts are passivated 303 stainless steel. 7021618 781S-SS-WF Same as 781S-SS-46F except wide fan pattern is 2x the width. Features and Benefits • Consistent area of coverage • No clogging, dripping, or drying out • No overspray, no mist, no bounce • Adjustable nozzle air The 781S Series Low Volume Low Pressure (LVLP) spray systems apply consistent coatings of low- to medium-viscosity fluids exactly where needed. Microliter to milliliter amounts can be reliably dispensed in round patterns with diameters ranging from 4.3 to 50.8 mm (0.17 to 2.0") and in fan patterns with widths up to 165.1 mm (6.5"). For use with • Activators • Coatings • Greases • Inks • Liquid Fluxes • Oils • Silicones • Solvents See ValveMate Spray Controllers for system setup. Download CAD Models: www.nordsonefd.com/CAD Specifications Size: 104.6l x 26.9dia mm (4.12l x 1.06dia") Weight: 781S-SS: 405.3 g (14.2 oz) 781S: 235.3 g (8.2 oz) Actuating air pressure required: 4.8–6.2 bar (70–90 psi) Maximum fluid pressure: 20.7 bar (300 psi) Fluid inlet: 1/8 NPT female Mounting: (1) 1/4-28 UNF tapped hole Cycle rate: Exceeds 400 per minute Air cylinder body / fluid body: 781S-SS: 303 stainless steel 781S-AL: Aluminum Air cap: 303 stainless steel Piston: 303 stainless steel Needle and nozzle: 303 stainless steel Maximum operating temperature: 102º C (215º F) Warranty: 1 year, limited All stainless steel parts are passivated. SPRAY PATTERNS Round Fan
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