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725DA-SS and 725DA Piston Valves MAINTENANCE & PARTS GUIDE Electronic pdf files of EFD ® manuals are also available at www.efd-inc.com/manuals.html. IMPORTANT! Save this Sheet. Forward to Maintenance or Tool Crib Supervisors A NORDSON COMPANY For EFD sales and service in over 30 countries, contact EFD or go to www.efd-inc.com/contact...
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Valve Disassembly and Reassembly Procedures Note: For the 725DA-SS or 725DA, valve Remove input air hose from set stroke adjustment to the full open push-in fitting on air cap. position (two complete rotations). The Insert 1/8” hex wrench through air...
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1.69 Nm (15 inch pounds) Air cylinder cap 10.8 Nm (8 foot pounds) Parts that require a specific torque when reassembling the valve. 725DA-SS assembly of piston, Shaft locking screw diaphragm and shaft. Spring #72534 #72559A Air cylinder cap Air piston with O-ring...
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Troubleshooting Guide No fluid flow case, replace the sealing head in accordance with the maintenance • If valve operating air pressure is instructions. too low, the valve will not open. Increase air pressure to 70 psi Valve responds slowly when (4.8 bar) minimum.