VERDER VERDERAIR VA 25 Instructions-Parts List Manual
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VERDER VERDERAIR VA 25 Instructions-Parts List Manual

Air-operated diaphragm pumps
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INSTRUCTIONS–PARTS LIST
ALUMINUM AND STAINLESS STEEL
VERDERAIR VA 25
Air-Operated
Diaphragm Pumps
For fluid transfer applications. For professional use only.
8.4 bar MAXIMUM FLUID WORKING PRESSURE
8.4 bar MAXIMUM AIR INPUT PRESSURE
*NOTE: Refer to the Pump Listing on page 22 to determine
the Model No. of your pump.
Patent No.
CN ZL94102643.4
FR 9408894
JA 3517270
US 5,368,452
Important Safety Instructions
Read all warnings and instructions in
the manual. Save these instructions.
Aluminum Model Shown
819.4470
Rev. ZAA
EN
02632B

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Summary of Contents for VERDER VERDERAIR VA 25

  • Page 1 INSTRUCTIONS–PARTS LIST ALUMINUM AND STAINLESS STEEL VERDERAIR VA 25 Air-Operated 819.4470 Rev. ZAA Diaphragm Pumps For fluid transfer applications. For professional use only. 8.4 bar MAXIMUM FLUID WORKING PRESSURE 8.4 bar MAXIMUM AIR INPUT PRESSURE *NOTE: Refer to the Pump Listing on page 22 to determine the Model No.

  • Page 2: Table Of Contents

    D This equipment is for professional use only. D Read all instruction manuals, tags, and labels before operating the equipment. D Use the equipment only for its intended purpose. If you are not sure, call VERDER After Sales Service. D Do not alter or modify this equipment.
  • Page 3 Warning WARNING TOXIC FLUID HAZARD Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or swallowed. D Know the specific hazards of the fluid you are using. D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state, and national guidelines.

  • Page 4: Installation

    The Typical Installations shown in Figs. 2–4 are only guides for selecting and installing system components. Contact your VERDER Customer Service for assistance D Pump: Connect a ground wire and clamp as shown in in planning a system to suit your needs.
  • Page 5 Installation The air line filter (F) removes harmful dirt and mois- Mountings ture from the compressed air supply. Caution Install a grounded, flexible air hose (A) between the ac- cessories and the 1/2 npt(f) pump air inlet (N). See The pump exhaust air may contain contaminants. Ventilate Fig.
  • Page 6 Installation BUNG-MOUNT TYPICAL INSTALLATION KEY FOR FIG. 2 Air Supply Line Bleed-Type Master Air Valve (required for pump) Air Regulator Air Line Quick Disconnect Master Air Valve (for accessories) Air Line Filter Fluid Suction Line Bung Adapter Fluid Drain Valve (required) Fluid Shutoff Valve Fluid Line Ground Wire (required;...
  • Page 7 Installation WALL-MOUNT TYPICAL INSTALLATION KEY FOR FIG. 4 Air Supply Line Bleed-Type Master Air Valve (required for pump) Air Regulator Air Line Quick Disconnect Master Air Valve (for accessories) Air Line Filter Fluid Suction Line Fluid Drain Valve (required) Fluid Shutoff Valve Fluid Line Wall Mounting Bracket Ground Wire (required;...
  • Page 8 Installation The air exhaust port is 3/4 npt(f). Do not restrict the air ex- Air Exhaust Ventilation haust port. Excessive exhaust restriction can cause erratic pump operation. Warning FIRE AND EXPLOSION HAZARD To provide a remote exhaust: Be sure to read and follow the warnings and precautions regarding TOXIC FLUID HAZ- ARD, and FIRE OR EXPLOSION HAZARD Remove the muffler (P) from the pump air exhaust port.
  • Page 9 Installation Fluid Pressure Relief Kit Caution Pressure Relief Kit 819.4472 (V) is available for bsp Aluminum Pumps, to prevent overpressurization and rupture of the pump or hose. See Fig. 7. The kit includes instructions. Thermal expansion of fluid in the outlet line can cause overpressurization. This can occur when using long fluid lines exposed to sunlight or ambient heat, or when pumping from a cool to a warm area (for example, from an underground tank).

  • Page 10: Operation

    Operation Be sure the pump is properly grounded. Refer to Pressure Relief Procedure Grounding on page 4. Warning Check all fittings to be sure they are tight. Be sure to use a compatible liquid thread sealant on all male threads. PRESSURIZED EQUIPMENT HAZARD Tighten the fluid inlet and outlet fittings securely.

  • Page 11: Maintenance

    Maintenance Flush the pump often enough to prevent the fluid you are Lubrication pumping from drying or freezing in the pump and damaging it. Use a compatible solvent. The air valve is designed to operate unlubricated, however if lubrication is desired, every 500 hours of operation (or month- ly) remove the hose from the pump air inlet and add two Always flush the pump and relieve the pressure before stor- drops of machine oil to the air inlet.

  • Page 12: Troubleshooting

    Troubleshooting Relieve the pressure before checking or servicing the Warning equipment. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Check all possible problems and causes before disas- Relief Procedure on page 10. sembling the pump.
  • Page 13 Troubleshooting PROBLEM CAUSE SOLUTION Fluid in exhaust air. Diaphragm ruptured. Replace. See pages 17–19. Loose diaphragm shaft bolt (107). Tighten or replace. See pages 17–19. Damaged o-ring (108). Replace. See pages 17–19. Pump exhausts excessive air at stall. Worn air valve block (7{H), o-ring (6{H), Repair or replace.

  • Page 14: Repairing The Air Valve

    Service Repairing the Air Valve Torque to 5.6–6.8 NSm. Tools Required D Torque wrench D Torx (T20) screwdriver or 7 mm socket wrench D Needle-nose pliers D O-ring pick D Lithium base grease NOTE: Air Valve Repair Kits 819.4274 (aluminum center housing models) and 819.0249 (sst center housing models) are available.
  • Page 15 Service Reassembly Insert narrow end first. Grease. Install with lips facing narrow end of piston (11). If you replaced the bearings (12, 15), reinstall as ex- plained on page 20. Reassemble the fluid section. Insert wide end first. On aluminum center housing models, install the valve plate seal (9{) into the groove at the bottom of the valve cavity.

  • Page 16: Ball Check Valve Repair

    Service Ball Check Valve Repair Aluminum Model Shown Apply medium-strength (blue) Loctite or equivalent to the threads. Tools Required Torque to 14–17 NSm. See Torque Sequence, page 28. Arrow (A) must point toward outlet manifold (103). D Torque wrench Beveled seating surface must face the ball (301). D 10 mm socket wrench Not used on some models.

  • Page 17: Diaphragm Repair

    Service Diaphragm Repair Disassembly NOTE: A Fluid Section Repair Kit is available. Refer to page 23 to order the correct kit for your pump. Parts Tools Required included in the kit are marked with an asterisk, for example (401*). Use all the parts in the kit for the best results.
  • Page 18 Service Loosen but do not remove the diaphragm shaft NOTE: On stainless steel pumps only, the fluid side dia- bolts (107), using a 15 mm socket wrench (1 in. on stain- phragm plate (105) is stainless steel. This plate is less steel models) on both bolts.
  • Page 19 Service 402* 403* 401* 02638 02637 Cutaway View, with Diaphragms in Place Cutaway View, with Diaphragms Removed 401* 403* 108* Lips face out of housing (1). Rounded side faces diaphragm (401). Air Side must face center housing (1). Grease. Apply medium strength (blue) LoctiteR or equivalent. Torque to 27–34 NSm.

  • Page 20: Bearing And Air Gasket Removal

    Service Remove the air cover gaskets (22). Always replace the Bearing and Air Gasket Removal gaskets with new ones. Tools Required Use a bearing puller to remove the diaphragm shaft D Torque wrench bearings (19), air valve bearings (12) or pilot pin bear- ings (15).
  • Page 21 Service Insert bearings tapered end first. Press-fit bearings flush with surface of center housing (1). Apply medium-strength (blue) Loctite or equivalent to the threads. Torque to 15–17 NSm. 02640 Detail of Air Valve Bearings 02639B Fig. 15 819.4470...

  • Page 22: Pump Listing

    Pump Listing VERDERAIR VA 25 Aluminum and Stainless Steel Pumps, Series B Your Model No. is marked on the pump’s serial plate. The listing of existing VERDERAIR VA 25 pumps is below: Fluid Part No. Seats Balls Diaphragms Section Section 810.0228...

  • Page 23: Repair Kit Listing

    Repair Kit Listing VERDERAIR VA 25 Aluminum and Stainless Steel Pumps, Series B Repair Kits may only be ordered as kits. To repair the air valve, order Part No. 819.4274 for aluminum center housing models, or Part No. 819.0249 for stainless steel center housing models (see page 24). Parts included in the Air Valve Repair Kit are marked with a symbol in the parts list, for example (2{H).

  • Page 24: Parts

    Parts Air Motor Parts List Fluid Section Parts List Fluid Section Ref. Ref. Material Part No Description Part No Description 819.4473 COVER, fluid; 819.4275 HOUSING, center; aluminum aluminum 819.0247 HOUSING, center; stainless 819.6978 MANIFOLD, inlet; steel aluminum 819.4474 MANIFOLD, inlet; 819.4276 COVER, air valve;...
  • Page 25 Parts *402 401* 403* 301* 201* 108* 202* Aluminum Model Shown Used on pumps with PTFE diaphragms only. Not used on stainless steel pumps. Not used on aluminum pumps. Not used on all models. * These parts are included in the Pump Repair Kit, which may only be *301 purchased as a kit.
  • Page 26 Parts Seat Parts List Seat Ref. 201* 819.4392 SEAT; polypropylene Part No Description Material 201* 819.4386 SEAT; 316 stainless steel 202* 819.6344 O-RING; PTFE 202* 819.6344 O-RING; PTFE 201* 819.4388 SEAT; 17-4 stainless steel – 201* 819.4393 SEAT; PVDF 202* 819.6344 O-RING;...
  • Page 27 Ball Parts List Diaphragm Parts List Dia- Ref. phragm Ref. Part No Description Material Part No Description 301* 819.4394 BALL; PTFE 401* DIAPHRAGM, not sold backup; separately 301* 819.4395 BALL; acetal polychloroprene (CR) 301* 819.4396 BALL; 316 stainless steel 402* 819.4284 PACKING, u-cup;...

  • Page 28: Torque Sequence

    Torque Sequence Always follow torque sequence when instructed to torque fasteners. Left/Right Fluid Cover Outlet Manifold Torque bolts to 14–17 NSm Torque bolts to 14–17 NSm TOP VIEW SIDE VIEW Inlet Manifold Torque bolts to 14–17 NSm BOTTOM VIEW 819.4470...

  • Page 29: Dimensions

    Dimensions FRONT VIEW SIDE VIEW 1 in. bspt* Fluid Outlet 1/2 npt(f) 1 in. bspt* Air Inlet Optional Fluid Outlet 3/4 npt(f) 311.9 mm Air Exhaust (muffler included) 355.6 mm 1 in. bspt* Optional Fluid Inlet 139.7 mm 1 in. bspt* 127 mm Fluid Inlet 304.8 mm...

  • Page 30: Technical Data And Performance Chart

    Technical Data Maximum Fluid Working Pressure ....8.4 bar Wetted Parts ..Vary by Model. Refer to pages 24–25. Air Pressure Operating Range .
  • Page 31 Notes 819.4470...

  • Page 32: Customer Services/Guarantee

    GUARANTEE All VERDER pumps are warranted to the original user against defects in workmanship or materials under normal use (rental use excluded) for two years after purchase date. This warranty does not cover failure of parts or components due to normal wear, damage or failure which in the judgement of VERDER arises from misuse.
  • Page 33 Goedgekeurd door, Approuvé par, Genehmigt von, Approvato da, Godkendt af , Έγκριζ η από, Aprovado por, Aprobado por, Hyväksynyt, Intygas av, Schválil, Kinnitanud, Jóváhagyta, Apstiprināts, Patvirtino, Zatwierdzone przez, Approvat minn, Odobril, Schválené, Одобрено от, Faofa ag, Aprobat de 15 February 2017 Werner Bosman Managing Director VERDER BV Leningradweg 5 9723 TP Groningen 819.5961 NETHERLANDS This declaration of conformity is issued under the sole responsibility of the manufacturer.
  • Page 34 Austria Austria Belgium Belgium China China Verder Austria Verder nv Verder Shanghai Instruments and Equipment Co., Ltd Eitnergasse 21/Top 8 Kontichsesteenweg 17 Building 8 Fuhai Business Park No. 299 A-1230 Wien B–2630 Aartselaar Bisheng Road, Zhangjiang Hiteck Park AUSTRIA BELGIUM...

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