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INSTALLATION & MAINTENANCE INSTRUCTIONS - ORIGINAL VERSION
AVK HIGH PRESSURE, DRY BARREL HYDRANT, MODERN
SERIES 27/00
TABLE OF CONTENT
1. Introduction
2. Storage
3. Installation and testing
3.1. Installation
3.2 Testing
4. Operation and maintenance
4.1 Hydrants tools
4.2 Operation
4.3 Maintenance procedures
4.4 Nozzle inspection
4.5 Main valve inspection
5. Traffic repair procedures
6. Optional equipment
6.1 Extension kits
6.2 Thrust bearing assembly
6.3 Monitor elbow installation
7. Troubleshooting guide
1. INTRODUCTION
The AVK series 27/00 dry barrel hydrant is designed to be trouble free and easy to maintain. This manual will
provide you with the information needed to properly install and maintain the fire hydrant and to ensure a long
service life.
Features of the AVK series 27/00 dry barrel hydrant include an EPDM encapsulated one piece main valve and
a stainless steel upper stem. The series 27/00 is rated for a working pressure of 17 bar, it is UL, ULC listed and
FM approved, as well as meets or exceeds the requirements of AWWA C502 - the standard for dry barrel fire
hydrants (where applicable).
The AVK series 27/00 hydrant and hydrant tools are designed so that one person can perform all repairs and
maintenance outlined in this manual.
2. STORAGE
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.
3. INSTALLATION AND TESTING
NOTE: Be aware of any local standards for proper installation of hydrants.
WARNING: All water lines must be isolated or depressurized and drained before installing or maintaining fire
hydrants. Failure to do so may cause pressure to be released resulting in severe injury or death.
3.1. INSTALLATION
Correct installation of the series 27/00 dry barrel hydrant is important for proper operation. The following steps
are general installation guidelines for a standard AVK series 27/00 hydrant.
Local conditions may require variations.
1. Before installing a hydrant, check to make sure all bolts are tight and all nozzles are properly installed
(See nozzle installation). Clean any dirt and debris from inside the hydrant base and from the hydrant
lead.
2. All hydrants shall be installed as plumb as possible.
3. Consult local codes and standard for hydrant placement. In general, the following guidelines should
be observed. Locate hydrants to provide complete accessibility while minimizing the possibility of
damage from vehicles or injury to pedestrians. The hydrant should be placed so that no part of the
hydrant is closer than 60 cm to the curb. Make sure the pumper nozzle faces the street for easy
connection. The centerline of the hydrant nozzles should be no less than half a meter above the ground
to allow for attachment of hoses and to operate the hydrant wrench.
COPYRIGHT©AVK GROUP A/S 2019 - AVK INTERNATIONAL A/S, BIZONVEJ 1, DK-8464 GALTEN - WWW.AVKVALVES.EU
MI DryBarrelHydrant 2700 rev. C April 2019 HB
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Table of Contents
Related Manuals for AVK 27/00
Summary of Contents for AVK 27/00
- Page 1 Features of the AVK series 27/00 dry barrel hydrant include an EPDM encapsulated one piece main valve and a stainless steel upper stem. The series 27/00 is rated for a working pressure of 17 bar, it is UL, ULC listed and FM approved, as well as meets or exceeds the requirements of AWWA C502 - the standard for dry barrel fire hydrants (where applicable).
- Page 2 As the water drains from the hydrant it should create a noticeable vacuum indicating proper drainage. 3.2.4 EXTERNAL DRAIN PLUGGING AVK offers the option of external or internal drain facility plugging. Prior to installation, for external plugging, visually verify for factory installed plugs or screw two brass plugs into the brass fittings located on the main valve flange using a 5 mm hexagon key.
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Page 3: Operation
4.2 OPERATION The AVK series 27/00 dry barrel hydrant is designed to be an easily operated, low torque, high flow fire hydrant. It will not re- quire excessively high loads to operate. It is possible to damage the hydrant by forcing it beyond its normal operational limits. -
Page 4: Maintenance Procedures
4.3 MAINTENANCE PROCEDURES The AVK series 27/00 dry barrel hydrant is designed to be a trouble free, easy to maintain hydrant. The following steps are recommended to provide trouble free operation. - Page 5 4.4.2.1 Proper nozzle alignment: 1. Remove the hose nozzle cap (F19) or pumper nozzle cap (F28) using an AVK hydrant wrench or adjustable hydrant wrench. 2. Locate the nozzle retaining screw (F23) hole. It is located approximately 20 mm from the edge of the nozzle section and at about the 4:30 to 5:00 o’clock position when facing the nozzle.
- Page 6 INSTALLATION & MAINTENANCE INSTRUCTIONS - ORIGINAL VERSION AVK HIGH PRESSURE, DRY BARREL HYDRANT, MODERN SERIES 27/00 2. Rotate the nozzle in a clockwise direction approximately 40 degrees until the nozzle slot aligns with lug opening on the nozzle section, located at the 6 o’clock position of the desired outlet. See fig. “6F”.
- Page 7 O-rings (F15) and the barrel gasket (F17) for damage. 7. To remove the valve seat ring (F51) and main valve assembly, slide the AVK seat wrench (fig. 7G) over the upper stem rod (F16) and engage the seat removal pin. Turn the tool counterclockwise (approximately 6 turns), until the valve seat ring has disengaged from the drain ring.
- Page 8 INSTALLATION & MAINTENANCE INSTRUCTIONS - ORIGINAL VERSION AVK HIGH PRESSURE, DRY BARREL HYDRANT, MODERN SERIES 27/00 HydrantWrench Fig. 7A Fig. 7B Fig. 7C AVK seat wrench Oil saver Fig. 7D Fig. 7E Fig. 7F AVK seat wrench alignment tool Fig. 7H Fig.
- Page 9 8. Check for correct alignment of the barrel gasket (F17) and re-install the nozzle section mounting hardware (F30, 31, 34) finger tight. 9. Using the AVK seat wrench install the stop nut (F11). Do not over tighten the stop nut! Fill the lubrication reservoir with the appropriate food grade oil or grease that contains no acetate or silicone.
- Page 10 “Open Right Hydrants”. Remove the lower anti friction washer (F8) and set aside with the operating nut. 5. Using the socket wrench end of the AVK seat-wrench, remove the stop nut (F11) from the upper stem rod (F16).
- Page 11 Tighten the nozzle section bolts connecting the lower barrel to the breakable flange to 110 Nm. 28. Using the socket portion of the AVK seat-wrench, reinstall the stop nut (F11). Spin the stop nut down until it stops, and then snug it about 1/4 turn tighter.
- Page 12 Fig. 10 Extension kit **As of Nov. 1, 2011, the spider and spider bolt are no longer required in AVK dry barrel hydrants Page 12/16 MI DryBarrelHydrant 2700 rev. C April 2019 HB...
- Page 13 4. Once the old operating nut and anti friction washers have been discarded, verify that the stop nut (F11) is secure at the bottom of the threads of the upper stem rod (F16). Use the AVK seat-wrench to ensure that the stop nut is not backed off.
- Page 14 Failure to do so may cause pressure to be released resulting in severe injury or death. AVK offers monitor elbows for Series 27/00 modern hydrants in both DN 80 and DN 100 or 3” / DN 80 and 4” / DN 100 outlet/flange sizes.
- Page 15 INSTALLATION & MAINTENANCE INSTRUCTIONS - ORIGINAL VERSION AVK HIGH PRESSURE, DRY BARREL HYDRANT, MODERN SERIES 27/00 Fig. 13 Monitor elbow components Page 15/16 MI DryBarrelHydrant 2700 rev. C April 2019 HB...
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Page 16: Troubleshooting Guide
Probable cause: Hydrant or supply vale is not fully open. Corrective action: Verify that the hydrant is fully open. The AVK Series 2780 hydrant main valve fully opens in approximately 19-21 turns. Also locate and verify that the supply valve is fully open.
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