Page 1: Table Of Contents
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...
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Page 3 Item No. Description Material Hose Nozzle Cap Grey iron, ASTM A126, "B" Hose Nozzle O-ring Nozzle Retaining Screw 304 Stainless steel Chain Set Zinc Plated steel Pumper Nozzle O-ring Pumper Cap Grey iron, ASTM A126, "B" Nozzle Section Washer Zinc Plate, 304,316 Stainless steel Nozzle Section Ductile Iron, ASTM A536 Outer Stem Nut O-ring...
Page 4: Introduction / Description
AWWA C503, Standard for Wet Barrel Fire Hydrants, (where applicable). American AVK also provides an additional series 24 model, the 2472, that has a rated working pressure of 250 psi. that is UL listed and FM approved, and an AWWA rated working pressure of 350 psi..
Page 5 Concrete collar for protection of traffic model hydrants. 2' min. 6" Curb Bury Concrete Supply Valve C o n c r e t e C o n c r e t e Concrete thrust block thrust block Fig. 1 Hydrant Installation page 4...
Page 6 PRESSURE TESTING American AVK 2472 Hydrants are factory tested to 700 PSI. Should a field test be required it may be done in the following manner. CAUTION: Prior to pressure testing, verify that all outlet and pumper valves have been fully closed! All American AVK Wet Barrel Hydrants close by turning the operating stems in a clockwise direction.
Page 7: Operation And Maintenance
24-150-30-400 2. AVK Threaded Wet Barrel Nozzle Wrench Part Number: 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” Stem Nut Retaining Screw (Allen) 7/64”...
Page 8: Operation
Water Main Supply Valve is open after any maintenance procedure has been performed. 1. Verify that all of the hydrant outlets are fully closed. Note that all AVK Wet Barrel Hydrants are manufactured in the "Open Left", configuration. (See Fig. 2.) 2.
Page 9: Inspection
Nozzle leaking from around the Nozzle Cap: NOTE: AVK wet barrel hydrants have cap gaskets that are designed to allow residual water to drain from the caps. Perform the following steps if water is leaking continuously from a nozzle.
Page 10 F115 F129 F128 F114 Remove Nozzle Retaining Screw (F114),to allow nozzle removal. Fig. 3A Fig. 3B Fig. 3C F131 F120 F128 F132 F131 F114 F114 Fig. 3D Fig. 3E Fig. 3F page 9...
Page 11 2. Using a drift punch, remove the Nozzle Retaining Screw (F114). See Fig. "3C", on page 9. 3. Use the AVK Threaded Wet Barrel Nozzle Wrench to remove the Threaded Hose Nozzle (F116), or Threaded Pumper Nozzle (F126), turning them in a counter clockwise direction.
Page 12 VALVE DISC REASSEMBLY AFTER INSPECTION: (continued): Note: The disc should not spin freely on the stem. The o-ring should act as a brake. CAUTION: The valve disc assemblies should be tight enough to prevent linear movement on the stem, but loose enough that you can rotate the assembly on the stem by hand.
Page 13 2. Use a 7/64” or (3mm) Allen wrench and remove the Stem Nut Retaining Screw (F114). See Fig. "5B" 3. Using an AVK Hydrant Wrench or adjustable 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.
Page 14: Repair Procedures
REPAIR PROCEDURES TRAFFIC REPAIR: AVK Wet Barrel Hydrants feature a safety Breakable Flange Unit design. This allows the hydrant head assembly to be struck by a vehicle and “Break Away” reducing the impact to the water main. In the event the hydrant head assembly has F122 been broken away, the following repairs will be necessary.
Page 15: Optional Equipment
OPTIONAL EQUIPMENT FLOWGUARD II ® F143 WARNING: For all of the following repair procedures, the F129 hydrant must be isolated or the system depressurized and F128 drained before removing the hydrant components. Failure to do F124 so may cause pressure to be released resulting in severe injury or death.
Page 16: Troubleshooting Guide
Hydrant or supply vale is not fully open. Corrective action: Verify that the hydrant is fully open. The AVK Series 24 hydrant valve discs are fully opened in approximately 9-14 turns. Also locate and verify that the supply valve is fully open.
Page 17: Parts And Service
PARTS AND SERVICE For information on parts and service for your area contact American AVK. Make a note of the valve model number and size located on the valve and contact: American AVK Company 2155 N. Meridian Blvd. Minden, NV 89423...
Page 18: Warranty
PARTS AND SERVICE For information on parts and service for your area contact American AVK. Make a note of the valve model number and size located on the valve and contact: American AVK Company 2155 N. Meridian Blvd. Minden, NV 89423...
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