Page 1 25B Pumps Customer Product Manual Part 104 330H NORDSON CORPORATION AMHERST, OHIO USA...
Page 2 Amherst, OH 44001 Notice This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1990. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Nordson Corporation. The information contained in this publication is subject to change without notice.
Page 3: Table Of Contents
Pump Operation Schematic ......1999 Nordson Corporation 104 330H Manual 1-8...
Page 7 Recommended Spare Parts ......8-38 1999 Nordson Corporation 104 330H Manual 1-8...
Page 11: Introduction
They are familiar with all relevant safety rules and regulations and are physically capable of performing their assigned tasks. Use of Nordson equipment in ways other than those described in the 3. Intended Use documentation supplied with the equipment may result in injury to persons or damage to property.
Page 12: Personal Safety
To prevent injury, be aware of less-obvious dangers in the workplace that often cannot be completely eliminated, such as hot surfaces, sharp edges, energized electrical circuits, and moving parts that cannot be enclosed or otherwise guarded for practical reasons. S1EN–03–[SF–LECAP]–7 1999 Nordson Corporation All rights reserved Issued 10/98...
Page 13: High-Pressure Fluids
The treatment that doctors recommend for an injection injury to the hand includes immediate decompression of the closed vascular compartments of the hand to release the underlying tissue distended by the injected paint, judicious wound depravement, and immediate antibiotic treatment. S1EN–03–[SF–LECAP]–7 1999 Nordson Corporation All rights reserved Issued 10/98...
Page 14: Fire Safety
Clean, maintain, test, and repair equipment according to the instructions in your equipment documentation. Use only replacement parts that are designed for use with original equipment. Contact your Nordson representative for parts information and advice. S1EN–03–[SF–LECAP]–7 1999 Nordson Corporation...
Page 15: Halogenated Hydrocarbon Solvent Hazards
Check your material MSDS or contact your material supplier for more information. If you must use halogenated hydrocarbon solvents, contact your Nordson representative for information about compatible Nordson components. If a system or any equipment in a system malfunctions, shut off the 7.
Page 17: Safety Labels
SERVICING Before servicing, cleaning, or removal of any part, set trigger lock on gun, and always shut off power source; then carefully release pressure in fluid portions of the system. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 21 16:1 — Medium Pressure 27:1 — High Pressure Model 25B pumps consist of an air valve, air motor, and hydraulic section. The air motor and air valve are protected by a sheet metal cover. The 2:1 and 4:1 pumps are made of corrosive-resistant plated steel and can be used with chlorinated solvents.
Page 22: Description 2. Fluid And Air Fittings
Description 2. Fluid and Air Fittings (contd) 0108001B Fig. 2-1 Model 25B Pump with Optional Mounting Kits and Accessories NPTF female fitting NPTF female fitting (2:1/4:1pumps) NPTF female fitting NPTF female fitting (16:1/27:1 pumps) Manual 1-8 104 330H 1999 Nordson Corporation...
Page 23 To prevent wear on the upper packing gland, the solvent chamber fluid lubricates the plunger. The lower packing gland is lubricated by the material being pumped. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 24: Cutaway View Of 16:1 Ratio Pump
4. Air motor packing gland 11. Siphon ball check valve 5. Plunger 12. Hydraulic section 6. Solvent chamber 13. Air motor 7. Hydraulic packing glands 14. Air valve Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 25: Pump Operation Schematic
FLUID OUT FLUID OUT HYDRAULIC PLUNGER PRESSURE PRESSURE BALL BALL CHECK CHECK CLOSED OPEN FLUID SIPHON BALL SIPHON CHECK BALL OPEN CHECK CLOSED 0108003B Fig. 2-3 Pump Operation Schematic 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 29: Air Connections
When installing the 25B pump on a wall, stand, or dolly, there should be 2. Wall or Dolly Mounting at least 508 mm (20 in.) of clearance at the bottom of the pump. The installation area should be accessible for operation and servicing.
Page 30: Air Supply Lubrication
Install the air filter before the regulator/gauge. Fill the lubricator with Nordson vitalizer oil, included with the kit. Refer to your Solvent Chamber Fluids manual for instructions on adjusting the lubricator on initial start-up.
Page 31: Hydraulic Connections
Installation CAUTION: Use Nordson, equivalent nylon, or Teflon hoses 4. Hydraulic Connections with electrical continuity between the fittings. They must withstand a maximum working pressure of at least 172 bar (2500 psi). They should have a minimum ID of 6.4 mm ( in.).
Page 32: Circulating Systems
1. Install the solvent filler cup to the filler port at the right side of the solvent chamber. The filler cup is included with the various mounting kits available. 2. Fill the pump solvent chamber with the proper solvent chamber fluid. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 35: Section 4 Operation
Allow the pump (1) to run until all of the flush material has been discharged from the system and air bubbles emerge from the drain-off rod (7) or spray gun (11). 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 36 12. Fluid filter 3. Air pressure gauge 8. Drain-off valve 13. Thermometer 4. Air pressure regulator knob 9. Circulation valve 14. Heater 5. Shut-off valve 10. Filter drain valve Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 37 (9) or air the pressure regulator (4) until the pump strokes at the desired rate. NOTE: A typical operating rate is 8–10 strokes a minute without guns spraying. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 38: Changing Materials
Gun nozzles should be removed and cleaned. Fluid filters should be drained and screens cleaned. Do not leave interior of system open to air. Leave flush material in system when not in use. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 41 1. Clean the fluid filter. Inspect the filter screen. Replace the filter screen if it is damaged or worn. NOTE: Use only Nordson solvent chamber fluid. Refer to the Packing Gland and Solvent Chamber Fluid Guide manual. 2. Check the solvent level in the solvent chamber. When the solvent level has risen about 25.4 mm (1 in.), perform these steps:...
Page 45 This section contains troubleshooting procedures. These procedures 1. Introduction cover only the most common problems that you may encounter. If you cannot solve the problem with the information given here, contact your local Nordson representative for help. Problem Page Pump stops or fails to start...
Page 46: Troubleshooting 2. Troubleshooting Charts
Nozzle size, number of guns in Decrease the nozzle size or number of system exceeds pump capacity guns in the system. Add another pump to the system if necessary. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 47 Material viscosity too high If possible, lower the material viscosity by adding solvent or by heating the material. Nozzle or fluid tip damaged Replace the nozzle or fluid tip. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 48 The following information is given as an aid to solving pump problems. 3. General Pump Information Minimizing Pressure Use the following guidelines to minimize pressure deviations in the 25B pump. Deviations Air Supply Correct sizing and installation of the pump air supply system will reduce pressure deviation problems.
Page 49 Troubleshooting Pump Suction Problems Use the following guidelines to isolate and correct 25B pump suction problems. Cavitation A large percentage of pump problems are the result of siphoning problems or cavitation. Pressure variations can be caused by restricting the suction or siphon side of the pump. When the pump does not fully prime on the up stroke, the pump will race or dive on the early portion of the down stroke.
Page 50 Elevate the material supply, above the pump if possible. Immerse the pump inlet (use a bucket or drum mount kits). Use ram (elevator) mounted pumps, inductor plates, or follower plates. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 53: Removing Pump From Wall Mounting
6. Remove the two screws from the sides of the pump. Remove the cover from the pump. 7. Remove the two screws from the rear of the pump. Remove the back panel. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 54: Air Valve
12. Lift the arm (7) from the center block (29). 13. Slide the poppet guide (28) from the center block (29). 14. Remove the O-rings (26) from the center block (29). Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 55: Cleaning And Inspection
17. Screw 27. Valve O-ring 8. O-ring 18. Fork 28. Poppet guide 9. Socket head screw 19. Crankshaft 29. Center block 10. Crankshaft end bushing 20. Snapper assembly 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 56: Air Valve Assembly
Figure 7-2. 9. Install the lockwashers (13) on the four fillister head screws (12). Install the two screws through each end plate and center block. Tighten securely. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 57 16. Install the air valve assembly onto the air motor head. Make sure the valve is oriented so the pin projecting from the snapper will be contacted by the shifter spool during pump operation. Thread the screws into air motor head and tighten. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 58: Air Motor
(8). 11. Pull the connecting tube (14) out of the base (16). Remove the O-ring (15) from each end of the connecting tube (14). Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 59 20. With a wrench on the flats of the spool carrier (5), use a screw driver to remove the telescoping screw from the spool (5) carrier. Remove the special nut (22), upper jam nut (10) and O-ring (9) from the telescoping screw (21). 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 60 9. O-ring 22. Special nut 23. Square-cut O-ring 10. Upper jam nut 11. Piston 24. Lockwashers 12. Lower jam nut 25. Hex nuts 13. Connecting rod 26. Tie rods Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 61: Cleaning And Inspection
7. Install the piston/connecting rod assembly into the cylinder (20). It may be necessary to coat internal wall of cylinder with small amount of Nordson Vitalizer oil before inserting the piston. 8. Install a new packing gland (19) into the base (16). Lubricate and install a new square-cut O-ring (18) into the groove in the base.
Page 62: Final Assembly
4. Install the air valve assembly, making sure the pin on the snapper will be contacted by the spool during operation. 5. Install the cover, fill the solvent chamber with fluid and reconnect the air supply. 6. Test pump operation. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 63: And 4:1 Hydraulic Section With 3 Tie Rods
Unscrew the pressure ball seat (17) from the bottom of the plunger (5). Remove the ball (19) from the plunger (5) and the O-ring (18) from the pressure ball seat (17). 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 64 6. Upper back-up washer 16. Lockwashers 7. U-cup 17. Pressure ball seat 8. Lower back-up washer 18. O-ring 9. Ball cage 19. Ball 10. Cage pin 20. O-ring Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 65 (5), and spacer (6) from the plunger (1). 0108024A Fig. 7-5 Seal Assembly—4:1 Type U Packings 1. Plunger 4. Female adapter 2. Male adapter 5. Wave spring 3. V-rings 6. Spacer 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 66: Packing Glands
Place the female adapter (4) over the V-rings with the flat side facing up. See Figure 7-4. Install a new O-ring (18) on the pressure ball seat (17). Thread the pressure ball seat into the plunger. Tighten securely. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 67 Alternately tighten the nuts to maintain alignment and prevent binding. 12. Connect the hydraulic plunger and air motor connecting rod. Install the solvent chamber to the motor base. Secure with bolts and lockwashers. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 68: And 27:1 Hydraulic Sections
8. Place the high pressure sleeve upside down on two wood blocks so that the flange of the high pressure sleeve is resting on the blocks and the projecting portion of the upper packing gland is between the blocks. Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 69: Packing Glands
Packing glands for obsolete pumps will not fit into current siphon housings. Refer to the packing gland charts in the Parts section for part numbers and packing gland housing sizes. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved...
Page 70 13. Ball 5. Upper packing gland 14. Cage 6. High pressure sleeve 15. Ball 7. Lower packing gland 16. Cage 8. Hex head screws 17. Plunger 9. Lockwashers Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 71: Cleaning And Inspection
8. Install the lockwashers (4) and hex head screws (3) and tighten securely. 9. Reconnect the hydraulic plunger and air motor connecting rod. Install the solvent chamber to the motor base and secure it with bolts and lockwashers. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 72: Rebuilding Type-G Packing Glands
INSTALL WITH SHARP EDGE FACING AWAY FROM WASHER 01080013A Fig. 7-7 Type-G Packing Glands—Cutaway View 1. External O-ring 3. Spacer 5. Washer 2. Housing 4. Internal retaining ring 6. U-cup Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 75: Introduction
Parts Section 8 Parts To order parts, call the Nordson Customer Service Center or your local 1. Introduction Nordson representative. Use this five-column parts list, and the accompanying illustration, to describe and locate parts correctly. Using the Illustrated Parts Numbers in the Item column correspond to numbers that identify parts in illustrations following each parts list.
Page 76: Pump
247 536 Pump, 25B, 2:1, steel S Cover, air motor, 25B 245 491 S Panel, back, 25B 245 493 S Pump, hydraulic, 25B, 2:1, steel 247 534 S Motor, air, 25B 245 546 S S Valve, air, 4-way 323 001...
Page 77: Standard Pump
Pump, 25B, 16:1, stainless steel S Cover, air motor, 25B 245 490 S Panel, back, 25B 245 493 S Pump, hydraulic, 25B, 16:1, stainless steel 247 239 S Motor, air, 25B 245 546 S S Valve, air, 4-way 323 001...
Page 78: Standard Pump
245 555 Pump, 25B, 27:1, aluminum S Cover, air motor, 25B 245 491 S Panel, back, 25B 245 493 S Pump, hydraulic, 25B, 16:1, stainless steel 245 548 S Motor, air, 25B 245 546 S S Valve, air, 4-way 323 001...
Page 80: Air Valve
S Guide, poppet 323 008 S Poppet 323 024 S Gasket, poppet spacer 245 789 S Washer, plate, end 323 030 S Plate, end 323 029 Continued on next page Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 81 NOTE A: Component of 25B air motor, part 245 546. B: Included in 25B seal air valve kit, part 106 103. C: Included in crankshaft and arm kit, part 106 314. D: Parts shown are for the new style valve. The old configuration used a different center block, three of the O-rings, part 940 115, and two poppet spacers, part 323 006.
Page 82: Air Motor
S Base, upper 323 050 NOTE See Figure 8-2 for exploded view and parts list for air valve. B: Included in 25B air motor seal kit, part 106 274. NS: Not Shown Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved...
Page 84: Hydraulic Section
— 247 534 Pump, hydraulic, 25B, 2:1, standard S Chamber, solvent, 2:1 246 198 S Gland, packing, 25B, 2:1 (Type F) 246 209 S S O-ring, hotpaint, 3.00 x 3.250 x 0.125 942 340 S Plunger, hydraulic, 2:1 246 204...
Page 85: Hydraulic Section
— 247 535 Pump, hydraulic, 25B, 4:1, standard S Chamber, solvent, 4:1 246 200 S Gland, packing, 25B, 4:1, (Type F) 246 208 S S Ring, back-up, single, 2 954 034 S S O-ring, hotpaint, 2.250 x 2.438 x 0.094...
Page 87: Standard Hydraulic Section
Item Part Description Quantity Note — 245 549 Pump, hydraulic, 25B, 16:1, aluminum S Chamber, solvent 245 504 S Gland, packing, 25, 16:1, upper (Type F) 245 889 S S O-ring, hotpaint, 1.313 x 1.438 x 0.063 940 270 S Plunger, hydraulic...
Page 88: Standard Hydraulic Section
Item Part Description Quantity Note — 245 548 Pump, hydraulic, 25B, 27:1, aluminum S Chamber, solvent 245 504 S Gland, packing, 25, 27:1, upper (Type F) 245 891 S S O-ring, hotpaint, 1.313 x 1.438 x 0.063 940 270 S Plunger, hydraulic...
Page 90: Stainless Steel Type F Hydraulic Section
Part Description Quantity Note — 247 239 Pump, hydraulic, 25B, 16:1, stainless steel S Chamber, solvent 245 504 S Gland, packing, 25, 16:1, upper (Type F) 247 244 S S O-Ring, Viton, black, 1.312 x 1.438 x 0.063 940 274...
Page 91 Item Part Description Quantity Note — 247 067 Pump, hydraulic, 25B, 27:1, stainless steel S Chamber, solvent 245 504 S Gland, packing, 25, 27:1, upper (Type F) 247 069 S O-ring, Viton, black, 1.312 x 1.438 940 274 S Plunger, hydraulic, 27:1, stainless steel...
Page 92: Stainless Steel Hydraulic Sections
8-18 Parts 15. 27:1 Stainless Steel Hydraulic Sections (contd) 0108017A Fig. 8-6 16:1 and 27:1 Stainless Steel Hydraulic Section Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 93 Item Part Description Quantity Note — 149 568 Pump, hydraulic, 25B, 16:1, stainless steel, Type G S Chamber, solvent 245 504 S Gland, packing, 25B, 16:1, upper 248 050 S S Spacer, U-cup - - - - - - S S O-ring, 1.313 x 1.438 940 274 S S U-cup, poly, 0.812 x 1.312...
Page 94: Stainless Steel Type G Hydraulic Section
8-20 Parts 16. 16:1 Stainless Steel Type G Hydraulic Section (contd) 0108023A Fig. 8-7 16:1 Stainless Steel Type G Hydraulic Section Manual 1-8 104 330H 1999 Nordson Corporation All rights reserved Issued 8/99...
Page 95: Muffler Kit
Quantity Note — 106 314 Kit, crankshaft and arm S Arm 246 468 S O-ring, Buna-N, 0.237 x 0.437 x 0.103 941 080 S Shaft, crank 246 467 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 96: Air Motor Seal Kit
Item Part Description Quantity Note — 106 274 Kit, seal, air motor, MDL 25B S U-cup 952 450 S O-ring, hotpaint, 0.438 x 0.563 x 0.063 940 130 S O-ring, Buna-N, 3.250 x 0.068 x 0.055 323 061 S O-ring, hotpaint, 0.300 x 0.050 945 006 S O-ring, Viton, 1.125 x 1.250 x 0.063...
Page 97: Siphon Check Kit For 2:1 Pumps
Item Part Description Quantity Note — 106 307 Kit, siphon check, 25B, 2:1 S O-ring, hotpaint, 3.250 x 3.375 x 0.062 940 421 S Pin, guide, 2:1 246 218 S Guide, ball, 25B 247 632 S Ball, 440 stainless steel, 1.125, 100...
Page 98: Seal And Packing Gland Kits
Description Quantity Note — 106 361 Kit, hydraulic, p/s, 2:1, (Type A) S Gland, packing, 25B, 2:1, Type A 247 343 S Cup, piston, 2:1 246 217 S O-ring, 0.924 x 0.116 945 022 S O-ring, hotpaint, 3.250 x 3.375 x 0.063...
Page 99: Type F Kit For 4:1 Pumps
Item Part Description Quantity Note — 106 303 Kit, hydraulic, p/s, 25B, 4:1, (Type F) S Gland, packing, 25B, 4:1 246 208 S Cup, piston, 2:1 246 216 S O-ring, 0.924 x .116 945 022 S O-ring, hotpaint, 2.500 x 2.688 x 0.094...
Page 100: Type G Kit For 16:1 Stainless Steel Pumps
Part Description Quantity Note — 106 392 Service kit, Type G, 25B, 16:1, stainless steel S Spacer, U-cup - - - - - - S Spacer, U-cup - - - - - - S O-ring, Viton, black, 1.313 x 1.438 940 274 S O-ring, Viton, black, 1.50 x 1.625...
Page 101: Type U Kit For 4:1 Standard Pumps
Item Part Description Quantity Note — 335 379 Service kit, hydraulic, Type U, 25B, 4:1 S Packing, upper, 25B, 4:1 333 367 S O-ring, hotpaint, 0.300 x 0.400 x 0.050 945 006 S Packing, lower, 25B, 4:1 335 378 S O-ring, hotpaint,...
Page 102: Type U Kit For 27:1 Standard Pumps
Item Part Description Quantity Note — 335 381 Service kit, hydraulic, Type U, 25B, 27:1 S Packing, upper, 25B, 27:1 333 379 S O-ring, hotpaint, 1.455 x 1.615 x 0.080 940 290 S Packing, lower, 25B, 27:1 333 380 S O-ring, hotpaint, 0.300 x 0.400 x 0.050...
Page 103: Ball And Seat Kits
— 244 823 Kit, seat, ball, lower, 16:1 and 27:1, stainless steel S Seat, ball, siphon, 316 stainless steel 244 824 S Ball, ceramic, 0.500, 25 900 018 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 104: Mounting Kits
8-30 Parts Use the following lists to order mounting kits for the 25B pump. 23. Mounting Kits 2:1 and 4:1 Standard Pumps Part Description Quantity 246 730 Kit, mounting wall, 25B, 2:1 and 4:1 S Strainer, siphon 163 040 S S Screw, thumb,...
Page 105: 2:1, 4:1, 16:1, 27:1 Standard Pumps
Parts 8-31 2:1, 4:1, 16:1, 27:1 Standard Pumps Part Description Quantity 245 552 Kit, mounting wall, standard, 25B, 16:1 and 27:1 S Strainer, siphon 163 020 S S Screw, thumb, 981 205 -20 x S Nut, 245 506 -16, special...
Page 106: 16:1 And 27:1 Stainless Steel Pumps
16:1 and 27:1 Stainless Steel Pumps Part Description Quantity 245 554 Kit, mounting wall, stainless steel, 25B, 16:1 and 27:1 S Strainer, siphon, stainless steel, 0.062 dia 247 234 S S Screw, thumb, 981 279 -20 x 0.75, stainless steel...
Page 107: 16:1 And 27:1 Standard Pumps Bucket Mounting
16:1 and 27:1 Standard Pumps Bucket Mounting Part Description Quantity 245 551 Kit, mounting bucket, standard, 25B, 16:1 and 27:1 S Strainer, siphon 163 000 S S Screw, thumb, 981 205 -20 x S Fluid, (Type S), pump chamber (1 qt)
Page 108: 2:1, 4:1, 16:1, 27:1 Standard Pumps Drum Mounting Kit
2:1, 4:1, 16:1, 27:1 Standard Pumps Drum Mounting Kit Part Description Quantity 245 553 Kit, mounting drum, standard, 25B S Strainer, siphon 163 020 S S Screw, thumb, 981 205 -20 x S Fluid, Type S, pump chamber (1 qt)
Page 109: Air Filter/Lubricator
S Washer, lock, split, 0.250, nickel plated 983 140 S Nut, hex, heavy, 984 130 -20, steel, zinc plated Circulation Valve Kits Refer to your Circulation Valve Kits manual. 1999 Nordson Corporation 104 330H Manual 1-8 All rights reserved Issued 8/99...
Page 110: Quick Reference Charts
8-36 Parts The following charts provide ordering information for the 25B pump. 25. Quick Reference Charts Repair and Replacement Kits Before ordering, refer to the exploded views and parts lists to make sure the kit contains the parts needed to repair your pump.
Page 111: Packing Gland Chart
Packing Gland Chart This chart lists the available optional packing glands by type and part number. All 25B pumps are shipped with Type F packing glands, which are suitable for most coating materials and general finishing. If other packing glands are used, write the new part number in your manual.
Page 112: Recommended Spare Parts
Kit, hydraulic, packing and seal, 16:1, (Type F) 106 293 Kit, hydraulic, packing and seal, 27:1, standard (Type F) NOTE A: For waterborne applications. B: For optional packing kits and packing glands for stainless steel pumps contact your Nordson representative. Manual 1-8 104 330H 1999 Nordson Corporation...
Page 115: Wall Mounting Holes
Depth: 203.2 mm (8.00 in.) Standard Aluminum 2. Weight 25B Pumps: 8.6 kg (19 lbs) Stainless Steel 25B Pumps: 9.5 kg (21 lbs) 2:1 25B Pump 22.2 kg (49 lbs) 4:1 25B Pump 20.8 kg (46 lbs) 8.7 mm (0.34 in.) dia on 152.4 mm (6 in.) centers 3.
Page 116: Air Requirements
(2.25 cfm) (4.5 cfm) (6.8 cfm) (9 cfm) (11.3 cfm) WARNING: Use Nordson, equivalent nylon, or Teflon hoses, 6. Hose Requirements with electrical continuity between the fittings. They must be capable of withstanding working pressures to 172 bar (2500 psi).

Nordson 25B Product Manual

1 Introduction

2 Qualified Personnel

3 Intended Use

4 Regulations and Approvals

5 Personal Safety

6 Fire Safety

7 Action in the Event of a Malfunction

8 Disposal

9 Safety Labels

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