E Catalogue

38 PISTON VALVES Piston Valve 725D Series The 725D Series valve systems consistently dispense a wide range of medium to thick fluids, including greases and silicones. The 725DA-SS provides stroke adjustment for both fluid flow and snuff-back control. The 725D-SS version is non-adjustable and provides fixed stroke travel. Features and Benefits • Positive shutoff • Excellent chemical resistance • End-of-cycle snuff-back • Diaphragm life exceeds 50 million cycles For use with: Braze Pastes Epoxies Greases Solder Resists Paste Fluxes RTV/Sealants Specifications 725DA-SS (stroke adjustment) Size: 152.4 mm length x 29.5 mm diameter (6.00" x 1.16") Weight: 326 g (11.5 oz) 725D-SS (fixed stroke-travel) Size: 127 mm length x 28.4 mm diameter (5.00" x 1.12") Weight: 279 g (9.85 oz) Actuating air pressure required: 70-90 psi (4.8-6.2 bar) Maximum input fluid pressure: 100 psi (7.0 bar) Fluid inlet thread: 1/8 NPT female Fluid outlet: 1/4 NPT female Mounting: (1) 1/8 NPT female blind hole or adjustable mounting block Air cylinder body: Aluminum, hard-coat anodized Fluid body: 303 stainless steel Piston: Aluminum, hard-coat anodized Spring: Stainless steel Sealing head/diaphragm: UHMW* polymer, FDA-approved All stainless steel parts are passivated. *Ultra High Molecular Weight polyethylene 7021014 (725DA-SS Valve) Adjustable piston stroke provides fine-tuning of fluid flow rate and pullback volume. UHMW* diaphragm and sealing head. Fluid body and body cap are passivated 303 stainless steel. Includes fluid inlet fittings #7021499 and #7007038 and dispensing tip kit. 7021009 (725D-SS Valve) Fluid body and body cap are passivated 303 stainless steel. UHMW* diaphragm and sealing head. Includes fluid inlet fittings #7021499 and #7007038. Piston Spring Diaphragm Mounting Hole 1/8 NPT Fluid Body Shaft Locking Screw Piston Stop Body Cap Fluid Outlet 1/4 NPT Shaft Sealing Head Tip Adapter Guide Pins Piston Air Cylinder Cap Air Cylinder Body Fluid Inlet 1/8 NPT Actuating Air Input 1/8 NPT Easily change deposit size settings of the 725D Series valves with the ValveMate 8000 controller. Refer to page 52. www.nordsonefd.com info@nordsonefd.com USA & Canada 800-556-3484 Europe +44 (0) 1582 666334 Asia +86 (21) 3866 9006