E Catalogue

47 Piston and Needle Stroke Control Stroke Reference Piston Spring Air Cylinder Body Packing Spring Needle Packings Fluid Body Air Cap Fluid Inlet 1/8 NPT Mounting Hole 1/4-28 UNF Nozzle Air Cap Retainer Actuating Air Input 10-32 UNF Nozzle Air Input 10-32 UNF 7007031 (781S-SS Spray Valve) Nozzle size is 1.17 mm (.046") diameter. Round pattern, narrow angle. All metal parts are passivated 303 stainless steel. 7021616 (781S-SS-TR) Same as 781S-SS, except with tamper-resist stroke. 7021615 (781S-SS-46F) Nozzle size is 1.17 mm (.046") diameter, fan shape. 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. 7021613 (781S-SS-28) Nozzle size is 0.71 mm (.028") diameter. Round pattern, narrow angle. All metal parts are passivated 303 stainless steel. 7021614 (781S-SS-28F) Nozzle size is 0.71 mm (.028") diameter, fan shape. All metal parts are passivated 303 stainless steel. 7021611 (781S-SS-14) Nozzle size is 0.36 mm (.014") diameter. Round pattern, narrow angle. All metal parts are passivated 303 stainless steel. 7021612 (781S-SS-14F) Nozzle size is 0.36 mm (.014") diameter, fan shape. All metal parts are passivated 303 stainless steel. 7021617 (781S-SS-WA) Same as 781S-SS except round pattern is 2x as large. For use with: Activators Coatings Greases Liquid Fluxes Silicones Solvents Inks Oils GENERAL-PURPOSE SPRAY VALVES Spray Valve Systems 781S Series 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"). Features and Benefits • Consistent area of coverage • No clogging, dripping or drying out • No overspray, no mist, no bounce • Adjustable nozzle air Specifications Size: 104.6 mm length x 26.9 mm diameter (4.12" x 1.06") Weight: 781S-SS: 405.3 g (14.2 oz) 781S: 235.3 g (8.2 oz) Actuating air pressure required: 70 to 90 psi (4.8-6.2 bar) Maximum fluid pressure: 300 psi (20.7 bar) Fluid inlet thread: 1/8 NPT female Mounting: (1) 1/4-28 UNF tapped hole Cycle rate: Exceeds 400 per minute Air cylinder body: 781S-SS: 303 stainless steel 781S: Aluminum, hard-coat anodized Fluid body: 781S-SS: 303 stainless steel 781S: Aluminum, hard-coat anodized Air cap: 303 stainless steel Piston: 303 stainless steel Needle and nozzle: 303 stainless steel Needle packings: PTFE All stainless steel parts are passivated . The ValveMate 8040 controller provides Low Volume Low Pressure air to the nozzle of the 781S Series valve for high transfer efficiency. Refer to page 53. www.nordsonefd.com info@nordsonefd.com USA & Canada 800-556-3484 Europe +44 (0) 1582 666334 Asia +86 (21) 3866 9006