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American AVK Company
An ISO 9001-2000 registered company

Maintenance Manual Series 2472
*Subject to change without notice. (rev. 02/09 A)

AVK SERIES 2472 - HIGH PRESSURE,
WET BARREL HYDRANT 
FIELD MAINTENANCE AND 
INSTRUCTION MANUAL 

TABLE OF CONTENTS

EXPLODED ASSEMBLY / PARTS LIST
INTRODUCTION / DESCRIPTION
RECEIVING AND STORAGE
INSTALLATION AND TESTING
 

- INSTALLATION

 

- TESTING

OPERATION AND MAINTENANCE
 

- HYDRANT TOOLS

 

- OPERATION

 

- MAINTENANCE PROCEDURES

  - INSPECTION
  - DISASSEMBLY FOR INSPECTION
  - REASSEMBLY AFTER INSPECTION
REPAIR PROCEDURES
 

- TRAFFIC REPAIR KIT

OPTIONAL EQUIPMENT
 

- FLOWGUARD 

TROUBLESHOOTING GUIDE
PARTS AND SERVICE
WARRANTY

AMERIC

AN A

VK C

OMP

ANY

Summary of Contents for 2472

Page 1: ...NUAL TABLE OF CONTENTS EXPLODED ASSEMBLY PARTS LIST INTRODUCTION DESCRIPTION RECEIVING AND STORAGE INSTALLATION AND TESTING INSTALLATION TESTING OPERATION AND MAINTENANCE HYDRANT TOOLS OPERATION MAINTENANCE PROCEDURES INSPECTION DISASSEMBLY FOR INSPECTION REASSEMBLY AFTER INSPECTION REPAIR PROCEDURES TRAFFIC REPAIR KIT OPTIONAL EQUIPMENT FLOWGUARD TROUBLESHOOTING GUIDE PARTS AND SERVICE WARRANTY A...

Page 2: ...ge 1 American AVK Series 2472 High Pressure Wet Barrel Hydrant Exploded Parts Breakdown 142 134 135 136 133 114 128 129 19 114 115 122 31 109 101 110 111 112 113 141 139 140 137 131 132 28 120 114 139 138 ...

Page 3: ... Screw 304 Stainless steel 115 Hose Nozzle Cap Gasket NBR Neoprene 116 Hose Nozzle Copper Alloy 120 Pumper Cap Gasket NBR Neoprene 122 Nozzle Section Bolt Zinc Plate 304 316 Stainless steel 126 Pumper Nozzle Copper Alloy 128 Threaded Hose Nozzle O ring NBR 129 Threaded Hose Nozzle Copper Alloy 131 Threaded Pumper Nozzle O ring NBR 132 Threaded Pumper Nozzle Copper Alloy 133 2 5 Valve Disc EPDM enc...

Page 4: ...drants have the correct direction to open the correct nozzle configuration and threads the correct operating nut size and shape the correct depth of bury and the correct inlet connection Hydrants should remain clean and dry and the main valve should be closed until installed to prevent weather related damage For long term storage the hydrants should be stored indoors INSTALLATION AND TESTING NOTE ...

Page 5: ...page 4 Fig 1 Hydrant Installation C o n c r e t e thrust block Concrete Curb Concrete collar for protection of traffic model hydrants C o n c r e t e thrust block Supply Valve 6 2 min 2 Bury Concrete ...

Page 6: ...emove one of the hose caps F19 2 Install a hydrant test cap with gauge Slightly open the valve by turning in a counterclockwise direction and bleed off the remaining air 3 Verify security of the nozzle caps and open the hydrant to full line pressure 4 If a higher test pressure is needed max 200 PSI working pressure for all AVK wet barrel hydrants except the model 2472X which has an AWWA rated work...

Page 7: ...r 24 150 308 001 3 Drift Punch 4 Hammer METRIC AND INCH WRENCH REQUIREMENTS FOR AMERICAN AVK WET BARREL HYDRANTS PART INCH SIZE METRIC SIZE Dummy Nut Retaining Bolt Allen 15 64 6mm Stem Nut Retaining Screw Allen 7 64 N A Nozzle Section Bolts and Nuts 15 16 24mm AVK Wet Barrel Operating Wrench 24 150 30 400 AVK Threaded Wet Barrel Nozzle Wrench 24 150 308 001 ...

Page 8: ...l AVK Wet Barrel Hydrants are manufactured in the Open Left configuration See Fig 2 2 Remove the desired outlet Hose Cap F19 or Pumper Cap F28 using the AVK Hydrant Wrench or adjustable hydrant wrench 3 Connect the desired apparatus to the hydrant Slowly open the desired outlet by turning the 2 5 Valve Stem F134 or 4 5 Valve Stem F138 counter clockwise using the AVK Hydrant Wrench or adjustable hy...

Page 9: ...hat the leaking has stopped Nozzle leaking from around the Nozzle O ring area 1 Remove Hose Nozzle Cap F19 or Pumper Nozzle Cap F28 and Hose Nozzle Cap Gasket F115 or Pumper Nozzle Cap Gasket F120 using an AVK Hydrant Wrench or adjustable hydrant wrench See Fig 3A 3B 3F 2 Using a drift punch remove the Nozzle Retaining Screw F114 See Fig 3C 3 Use the AVK Threaded Wet Barrel Nozzle Wrench to remove...

Page 10: ...page 9 F19 F115 F129 F128 F114 Fig 3A Fig 3B Fig 3C Fig 3D Fig 3E Fig 3F Remove Nozzle Retaining Screw F114 to allow nozzle removal F128 F131 F28 F120 F132 F131 F114 F114 ...

Page 11: ...s time it is recommended the Inner Stem Nut O rings F111 and the Nozzle O rings F25 for Pumper Nozzle O ring and F22 for Hose Nozzle O ring be replaced 8 Use a 7 64 or 3mm Allen wrench and remove the Stem Nut Thrust Nut Retaining Screw F114 The Valve Disc F133 for 2 5 or F137 for 4 4 5 can be removed from the Thrust Nut F135 for 2 5 or F139 for 4 4 5 by unscrewing the valve disc from the thrust nu...

Page 12: ...ood grade grease that contains no acetate or silicone on the inside threads of the Stem Nut F110 then screw the stem valve disc assembly into the Stem Nut 8 Place a Dummy Nut F112 onto the pentagon of stem and secure it with a Dummy Nut Retaining Bolt F113 that has a drop of thread locker Loctite 242 or equal on it Tighten the bolt with 15 64 or 6mm Allen wrench 9 Follow the steps in NOZZLE REASSE...

Page 13: ... wrench unscrew the Stem Nut F110 in a counterclockwise direction The Inner Stem Nut O rings F111 and Outer Stem Nut O ring F109 can now be inspected and replaced if necessary See Figs 5C 5D 4 When re installing the Stem Nut F110 apply a thin coat of food grade grease or oil that contains no acetate or silicone to the o rings F109 F111 Also take care to avoid cross threading the Stem Nut threads i...

Page 14: ...stall the Nozzle Section Bolts F122 with a new Nozzle Section Washer F31 beneath the head of each bolt into six mounting holes See Fig 6 4 Place the two halves of the Break Ring F124 together below the lip of the Flange Section F127 and lift upward until the bolts project down through the holes in the new Break Ring halves NOTE The cut away view of the Break Ring shows orientation with the outer f...

Page 15: ... remains in it s proper location 4 Use food grade grease that contains no acetate or silicone to stick the Lower O ring F145 in the groove between the Body and the Lower Seat Ring 5 Carefully turn the assembly over and place it on the mounting flange of the riser pipe and attach loosely with mounting hardware The bolts should be installed from the bottom so that with the nuts are on top of the che...

Page 16: ...ction Replace stem o rings PROBLEM Nozzle section facing the wrong direction Corrective action Loosen the Nozzle Section hardware and carefully rotate the Nozzle Section to the desired position Tighten the mounting hardware to 60 Ft Lbs PROBLEM Hydrant flow is low Probable Cause Hydrant or supply vale is not fully open Corrective action Verify that the hydrant is fully open The AVK Series 24 hydra...

Page 17: ...s warranty shall be void As to motors gearing or accessory equipment purchased by American AVK Company from others manufacturers and used or incorporated into American AVK Company s products those manufacturers warranties shall apply American AVK Company will honor all reasonable costs to repair or replace any American AVK Company Wet Barrel Fire Hydrant found to be defective American AVK Company ...

Page 18: ... installation prior to approval from American AVK this warranty shall be void As to motors gearing or accessory equipment purchased by American AVK Company from other manufacturers and used or incorporated into American AVK Company s products those manufacturers warranties shall apply American AVK Company s sole responsibility shall be in its sole discretion to replace the product with the same or...

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