AVK 67 Series User manual

American AVK Company
An ISO 9001 registered company
Maintenance Manual Series 67
*Subject to change without notice. (rev.04/10 B)
AVK SERIES 67 - HIGH PRESSURE,
POST/FLUSHING 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
- LUBRICATION
- INSPECTION
- DISASSEMBLY FOR INSPECTION
- REASSEMBLY AFTER INSPECTION
REPAIR PROCEDURES
- NOZZLE REPLACEMENT
- TRAFFIC REPAIR KIT
- MAIN VALVE REPLACEMENT
OPTIONAL EQUIPMENT
- EXTENSION KITS
TROUBLESHOOTING GUIDE
PARTS AND SERVICE
WARRANTY
AMERICAN AVK COMPANY

page 1
American AVK Series 67 Post / Flushing Hydrant
Exploded Parts Breakdown
F1 F2 F59 F52 F76 F500 F75 F501 F504 F506 F31 F505 F31 F34
F503 F73 F509 F506 F31 F73 F7 F515 F7 F514 F507 F38 F508 F516 F519
F21 F19 F24 F510 F518 F23 F502 F517 F31 F34 F73 F20 F22

page 2
Item No. Description Material
F1 Weathershield Bolt 304 Stainless steel
F2 Weathershield Grey Iron, ASTM126, Class “B”
F7 Valve Seat O-ring NBR
F19 Hose Nozzle Cap Grey Iron, ASTM126, Class “B”
F20 Hose Nozzle Copper Alloy
F21 Hose Nozzle Cap Gasket NBR
F22 Hose Nozzle O-ring NBR
F23 Set Screw - (Nozzle) 304 Stainless steel
F24 Chain Assembly Zinc Plated Steel
F31 Nozzle Section Washer 304 Stainless steel
F34 Nozzle Section Nut 304 Stainless steel
F38 Spring Pin 304 Stainless steel
F52 Thrust Nut O-ring NBR
F59 Set Screw - (Thrust Nut) 304 Stainless steel
F73 Flange O-ring NBR
F75 Zerk Fitting Case Hardened Steel, Zinc Plated
F76 Thrust Nut Copper Alloy
F500 Operating Nut Copper Alloy
F501 Anti Friction Washer Copper Alloy
F502 Stem Seal O-ring NBR
F503 Upper Stem Rod 304 Stainless steel
F504 Nozzle Section Ductile iron, ASTM A536
F505 Two Piece Breakable Flange Ductile iron, ASTM A536
F506 Nozzle Section Bolt Zinc Plated Steel
F507 Coupler Pin 304 Stainless steel
F508 Breakable Coupling 304 Stainless steel
F509 Lower Barrel Ductile iron, ASTM A536
F510 Lower Stem Rod ASTM A108, Mild Steel
F511* Standpipe Flange Ductile iron, ASTM A536
F512* Extension Coupling 304 Stainless steel
F513* Extension Stem Rod ASTM A108, Mild Steel
F514 Main Valve Flange Copper Alloy
F515 Seat Ring Copper Alloy
F516 Main Valve Retainer Pin 304 Stainless steel
F517 Cotter Pin 304 Stainless steel
F518 Main Valve EPDM Rubber encapsulated ductile iron
F519 Base Ductile iron, ASTM A536
* Not Shown in Exploded Parts Breakdown

page 3
INTRODUCTION / DESCRIPTION
The American AVK Series 67 Post / Flushing Hydrant is designed to be a trouble free, easy to maintain hydrant.
This manual will provide you with the information needed to properly install and maintain the re hydrant and to ensure a
long service life. Features of the American AVK Series 67 Post / Flushing Hydrant include an EPDM encapsulated one piece
main valve and a stainless steel upper stem. The series 67 is rated for a working pressure of 250 psi, meets or exceeds the
requirements of AWWA C502, Standard for Dry Barrel Fire Hydrants, (where applicable). The AVK Series 67 hydrant and
hydrant tools are designed so that one person can perform all repairs and maintenance outlined in this manual.
RECEIVING AND STORAGE
Inspect the hydrants upon receipt for damage in shipment. Note any damage on the bill of lading and have the driver
sign it. Notify American AVK. Unload all of the hydrants carefully to avoid damage. Verify that the hydrants have the correct
direction to open, the correct nozzle conguration 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: American AVK recommends AWWA Standard C600 and AWWA Manual M17 for further information
regarding hydrant installation and testing.
NOTE: Consult local codes and standards for proper re hydrant placement and spacing
WARNING: All water lines must be isolated or depressurized and drained before installing or maintaining re
hydrants. Failure to do so may cause pressure to be released resulting in severe injury or death.
INSTALLATION
Correct installation of the Series 67 Post / Flushing Hydrant is important for proper operation. The following steps are
general installation guidelines for a standard AVK Series 67 re 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 pipe lead.
2. Install AVK Series 67 Post hydrants with the valve below the frost line and install adequate drainage, such as gravel.
Support all hydrants in upright positions. All hydrants shall be installed plumb. Include a separate gate valve or curb
valve and restraining joints in supply piping. Refer to Fig.1, Hydrant Installation.

page 4
Fig. 1
Hydrant Installation
Concrete
thrust block
Concrete
Curb
Concrete collar for protection on all
hydrant installations.
Drain Detail:
Caution: When pouring
thrust block, do not cover
drain holes.
1/3 cubic yard drain eld
rock.
Concrete
thrust block
Supply Valve
6"
2' min.
2" min.
2'
Bury
Concrete

page 5
PRESSURE TESTING
American AVK Recommended Hydrant Testing Procedure
AAVK recommends that AWWA M17, "Installation, Field Testing, and Maintenance of Fire Hydrants", chapters 4.3 and 4.4
be followed for field testing and placing the hydrant in service. The following is excerpted from AWWA M17 for the
reader's convenience:
PRESSURE TEST AT MAIN PRESSURE
1. Ensure that all nozzles are properly installed per section “NOZZLE INSPECTION & REPLACEMENT”
2. Remove the highest outlet-nozzle cap and open the hydrant valve a few turns. Allow water to reach the bottom of the
outlet nozzle. (If the hydrant is furnished with a tapped-plug air vent, then it is not necessary to remove the nozzle cap.
Just open the air vent.)
3. Replace the outlet-nozzle cap and leave it loose to permit all air to escape, or close the tapped-plug air vent.
4. After all air has escaped, tighten the outlet-nozzle cap.
5. Open the hydrant completely. (Opening the hydrant fully before all air has escaped will compress the air and cause a
safety hazard.) (AAVK comment: underlined as very important)
6. Check for leakage at flanges, outlet nozzles, and the packing or O-rings around the stem.
7. If leakage is noted, repair or replace the faulty components or the entire hydrant. (AAVK comment: only after hydrant
is closed and all pressure is bled off.)
8. Repeat the test until results are satisfactory.
PRESSURE TEST AT PRESSURES ABOVE MAIN PRESSURE
1. Connect a pressure-test pump to one of the hydrant's outlet nozzles.
2. Open the hose nozzle cap. Open the hydrant valve a few turns. Allow the hydrant to fill until water is at the
bottom of the outlet nozzle.
3. After all air has escaped, tighten the outlet-nozzle cap.
4. Open the hydrant completely.
5. Close the auxiliary valve.
6. Pump up to test pressure (usually 150 psi [1034 kPa]).
7. Check for leakage at flanges, outlet nozzles, and the packing or O-rings around the stem.
DRAINAGE TEST
1. Remove one of the Hose Cap (F19) and fill the hydrant with water.
2. With the hydrant in the closed position, place the palm of one hand over the open Hose Nozzle (F20). As the water drains
from the hydrant it should create a noticeable vacuum indicating proper drainage.

page 6
67-065-59
Series 67 T-Wrench
67-080-59
Series 67 Hydrant Wrench
OPERATION AND MAINTENANCE
HYDRANT TOOLS
Description Part Number
Series 67 T-Wrench, for Main Valve removal/replacement. 67-065-59
Series 67 Hydrant Wrench, for Thrust Nut removal/replacement, 67-080-59
hydrant operation, and Cap removal/replacement.
METRIC AND INCH WRENCH REQUIREMENTS FOR AMERICAN AVK HYDRANTS
PART INCH SIZE METRIC SIZE
Weathershield Retaining Bolt (Allen) 5/16” 8mm
Thrust Nut Retaining Screw (Allen) 5/32” 4mm
Nozzle Retaining Screw 3/16” 5mm
All other Bolts and Nuts 15/16” 24mm

page 7
OPERATION AND MAINTENANCE
OPERATION
The American AVK Series 67 Post / Flushing Hydrant is designed to be an easily operated, low torque, high ow post
hydrant. It will not require excessively high loads to operate. It is possible to damage the hydrant by forcing it beyond its
normal operational limits.
The American AVK thrust bearing hydrant requires a minimum of torque to operate.
1. Check direction of opening as marked on the hydrant Weathershield (F2).
2. To Open, turn the Operating Nut (F500), in the opening direction, indicated by an arrow on the Weathershield (F2), until the
Main Valve (F518), hits the stop in the hydrant Base (F519). Do not force the hydrant in the opening direction beyond
full open as indicated by sudden resistance to turning. If water does not ow when the hydrant is open, it is probably
due to a closed valve upstream from the hydrant.
3. To close, turn the operating nut until the Main Valve stops the ow. It is not necessary to close this style of hydrant with great
force. Once the ow has stopped, loosen the operating nut in the opening direction, 1/2 to 1 turn to take the strain off the
operating parts of the hydrant and to make it easier to open the hydrant.
F2, Weathershield
Note: Open Left shown.
F518, Main Valve, resting against
stop in Base (F519), in the full
"OPEN" position.
F518
F519
Fig. 2
Operation

page 8
MAINTENANCE PROCEDURES
The American AVK Series 67 Post / Flushing Hydrant is designed to be a trouble free, easy to maintain hydrant. The following
steps are recommended to provide trouble free operation.
LUBRICATION
CAUTION: For grease servicing, ensure that the Weathershield bolt has been loosened to prevent damage to the internal
O-rings. Relling is performed by loosening the Weathershield bolt (F1) with a 5/16” or (8mm) hexagon key. Rell lubricant
reservoir with a food grade grease using a grease gun on the Zerk Fitting (F75). Tighten the Weathershield Bolt (F1).
Servicing should be checked and performed at least once per year if required, or per local municipal requirements.
Fig. 3
Lubrication
F1, Weathershield Bolt
F75, Zerk Fitting

page 9
INSPECTION
DISASSEMBLY FOR INSPECTION:
The American AVK Series 67 Post / Flushing Hydrant is designed to be a trouble free, easy to maintain hydrant. The following
steps are recommended to provide trouble free operation.
WARNING: For all of the following repair procedures, the hydrant must be isolated or the system depressurized and drained
before removing the hydrant components. Failure to do so may cause pressure to be released resulting in
severe injury or death.
NOZZLE INSPECTION
1. After making sure the hydrant is not pressurized, remove a hose cap (F19).
2. Locate the Set Screw (F23) hole. It is located approximately ½" in from the edge of the nozzle section and at about the
4:30 to 5:00 o'clock position. If this retaining screw is missing, ensure that the nozzle is correctly installed as shown in
Fig. 4, then immediately replace it (F23-Setscrew, M10 x 16 304 stainless steel) with a 5mm or 3/16” hexagon key.
3. There should be a small "dimple" or punch mark on the hose nozzle (F20), this mark should be in alignment with the
nozzle retaining screw as shown in Fig. 4. If it isn't, remove the setscrew (F23), rotate the nozzle until the alignment
is correct. Apply a drop of thread-locker (Loctite #242 or equal) to the end of the setscrew, tighten it until it contacts the
nozzle, and back off 1/8th of a turn. Replace the hose nozzle cap (F19).
Fig. 4
Nozzle Inspection
Dimple
Set Screw in
nozzle slot.

page 10
DISASSEMBLY FOR INSPECTION: (continued)
MAIN VALVE INSPECTION
WARNING: For all of the following repair procedures, the hydrant must be isolated or the system depressurized and drained
before removing the hydrant components. Failure to do so may cause pressure to be released resulting in
severe injury or death.
NOTE: Refer to gures on page 11.
1. Check direction of opening as marked on the hydrant Weathershield (F2).
2. To Open, turn the Operating Nut (F500), in the opening direction, indicated by an arrow on the Weathershield (F2), until the
Main Valve (F518), hits the stop in the hydrant Base (F519). Do not force the hydrant in the opening direction beyond
full open as indicated by sudden resistance to turning. If water does not ow when the hydrant is open, it is probably
due to a closed valve upstream from the hydrant.
3. Remove the Weathershield (F2), by removing the Weathershield Bolt (F1), using a 5/16" or 8mm Allen wrench.
(See Fig. 5)
4. Loosen the Thrust Nut Retaining Screw (F59), using a 5/32" or 4mm Allen wrench. Using the AVK Series 67 hydrant
wrench, remove the Thrust Nut (F76), and Thrust Nut O-ring (F52). (See Fig. 6)
5. Using the AVK Series 67 hydrant wrench, remove the Operating Nut (F500), and Anti Friction Washer (F501).
(See Fig. 7)
6. Using 15/16" or 24mm wrenches, remove the Nozzle Section Bolts (F506), Washers (F31), and Nuts (F34). Set the
Two Piece Breakable Flange (F505), aside with the hardware. Lift the Nozzle Section (F504), assembly up over the
Upper Stem Rod (F503). Also remove the Flange O-ring (F73). (See Fig. 8)
7. Remove the lower Springpin (F38), and Coupler Pin (F507), from the Lower Stem Rod (F510). Remove the Upper Stem
Rod and Breakable Coupling (F508), from the Lower Stem Rod. Re-install the Coupler Pin and Springpin on to the Lower
Stem Rod. (See Fig. 9 & Fig. 10)
8. Place the AVK Series 67 T-Wrench over the Coupler Pin and remove the Lower Stem Rod/ Main Valve assembly by
turning counter clockwise. (See Fig. 11 & Fig. 12)
9. Once removed, check the Valve Seat O-rings (F7), and Main Valve (F518), for damage. Also verify that there is no
damage to the sealing surface on the Valve Seat Ring (F515).
10. If replacement of the Main Valve (F518), is necessary, refer to the MAIN VALVE REPLACEMENT section in the REPAIR
PROCEDURES section on page 15.
NOTE: When re-installing the Thrust Nut (F76), tighten the Thrust Nut completely, then back it off 1/8 to 1/4 turn. Then tighten
the Thrust Nut Retaining Screw (F59), to lock the Thrust Nut in place.
Note: Torque the nozzle section hardware to 60 Ft. Lbs..

F1
F2
F59
F76
F500
F501
F505
F31
F34
F31
F506
F504
F38
F507 F508
Series 67
T-Wrench
F517
F516
F518
F515
F7
F510
page 11
DISASSEMBLY FOR INSPECTION: (continued)
MAIN VALVE INSPECTION
Fig. 5 Fig. 6 Fig. 7
Fig. 8
Fig. 9 Fig. 10 Fig. 11
Fig. 12

F23
F20
F22
F19
F21
Lug on Hose
Nozzle
Lug on Nozzle
Section
Lug on Nozzle
Section
page 12
REPAIR PROCEDURES
NOZZLE REMOVAL AND REPLACEMENT:
1. Remove the Set Screw (F23), with a 5mm or 3/16” hexagon key.
2. Using a AVK hydrant wrench or adjustable hydrant wrench, rotate the Cap and Nozzle assembly clockwise approximately
40 degrees to align the nozzle lugs with the slots in the Nozzle Section (F504).
3. Gently pull the pull the Cap/Nozzle assembly out until the nozzle lugs are in line with the nozzle section lugs.
4. Using the AVK hydrant wrench or adjustable hydrant wrench, loosen the Hose Nozzle Cap (F19) in a counter clockwise
direction.
5. The Cap/Nozzle assembly can now be removed for inspection from the Nozzle Section . Check the Hose Nozzle Gasket
(F21) and the Hose Nozzle O-ring (F22) for damage and replace if necessary.
6. To replace, screw the Hose Nozzle Cap, with the Hose Nozzle Cap Gasket installed, on to the nozzle. Lightly grease the
Hose Nozzle O-ring and insert the Cap/Nozzle assembly into the Nozzle Section, making sure that the slotted lug on the
nozzle is at the 6 o'clock position. Tighten the Cap onto the Nozzle while the lugs prevent rotation, then complete the
insertion of the assembly. Using a hydrant wrench, rotate the assembly approximately 40 degrees, counter clockwise to
align the slotted lug with the Set Screw hole. Install the Set Screw. Remove the Cap and verify that the dimple is in line
with the Set Screw. Replace the Cap.
Fig. 13
Nozzle Removal

F31
F506
F504
F1
F2
F52
F59
F76
F500
F501
F38, F507, F508
F509
F505
F31
F34
F73
page 13
REPAIR PROCEDURES
TRAFFIC REPAIR:
WARNING: For all of the following repair procedures, the
hydrant must be isolated or the system depressurized and
drained before removing the hydrant components. Failure
to do so may cause pressure to be released resulting in
severe injury or death.
AVK Series 67 Post/Flushing Hydrants feature a safety
Breakable Flange (F505) and Breakable Stem Rod Coupling
(F508) 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
been broken away, the following repairs will be necessary.
1. Visually inspect the Nozzle Section (F504), and it's
assembled components for damage. In most cases, the
Two Piece Breakable Flange (F505), Breakable Coupling
(F508), Coupling Pins (F507), Springpins (F38), Flange
O-ring (F73), and mounting hardware (F31,F34,F506)
need to be replaced.
2. Using the AVK Series 67 Hydrant Wrench, fully open the
hydrant to allow better access to the lower end of the
Upper Stem Rod (F503). Visually inspect the Upper Stem
Rod for damage. Remove the Breakable Coupling (F508),
Coupling Pins (F507), Springpins (F38), from the Upper
Stem Rod.
3. Refer to the "MAIN VALVE INSPECTION" procedures on
page 10, to remove the Nozzle Section from the Upper
Stem Rod.
4. If still present on the Lower Stem Rod (F510), remove the
Coupler Pin (F507), and Springpin (F38).
NOTE: If necessary, use a ashlight to verify that the Coupler
Pins or Springpins have not fallen into the Lower Barrel
(F509).
5. Attach the new Breakable Coupling (F508), to the Upper
Stem Rod with a new Coupler Pin and Springpin. Ensure
the Springpin is fully engaged onto the Coupler Pin. See
(Fig. 15).
6. Attach the Upper Stem Rod and Breakable Coupling to
the Lower Stem Rod using a new Coupling Pin and
Springpin.
7. Replace the Flange O-ring (F73) with a new one and
lightly grease it with a food grade grease.
8. Remove the Hose Nozzle Cap. Verify that the Stem Seal
O-rings (F502), are in place. Replace and lightly grease
them if necessary. (Refer to "Exploded Parts Breakdown"
on page 1.
Fig. 14
Trafc Repair

page 14
REPAIR PROCEDURES
TRAFFIC REPAIR: (continued)
9. Gently slide the Nozzle Section over the Upper Stem Rod, taking care not to displace the Stem Seal O-rings, until it
comes to rest on the Lower Barrel. Note: Ensure that the Flange O-ring is located in the groove of the Lower Barrel.
10. Secure the Two Piece Breakable Flange as shown in (Fig. 15), with the text "This Side Up", with the lip of the Breakable
Flange below the shoulder of the Lower Barrel.
11. Follow the disassembly steps in "DISASSEMBLY FOR INSPECTION, MAIN VALVE INSPECTION" in reverse order for
reassembly. ( pages 10 & 11)
Note: Torque the nozzle section hardware to 60 Ft. Lbs..
Two Piece Breakable Flange
mounted below the shoulder of
the Lower Barrel.
Springpins fully engaged on
Coupler Pin.
Fig. 15
Trafc Repair

page 15
REPAIR PROCEDURES
MAIN VALVE REPLACEMENT:
WARNING: For all of the following repair procedures, the hydrant must be isolated or the system depressurized and drained
before removing the hydrant components. Failure to do so may cause pressure to be released resulting in
severe injury or death.
NOTE: For access to the Main Valve assembly, refer to the "DISASSEMBLY FOR INSPECTION, MAIN VALVE INSPECTION"
on pages 10 and 11.
1. If replacement of the Main Valve (F518), is required, remove the Cotter Pin (F517), and Main Valve Retaining Pin (F516)
from the assembly. Unscrew the Main Valve from the Lower Stem Rod (F510). When installing a new Main Valve,
screw the Lower Stem Rod (F510) into the Main Valve Disc (F518) until it bottoms out in the threads, Then unscrew the
lower stem rod (F510) just enough until the holes line up (you should not unscrew the lower stem rod more than ½ of a
turn). Insert the Main Valve Retainer Pin (F516) into the hole. Insert a Cotter Pin (F517) into the retainer pin hole and
bend cotter pin with pliers so that it won’t come apart. Grease the ears of the main valve disc with a food grade grease.
Note: Make sure cotter pin is bent up against main valve disk so that it will not interfere with, or contact, the valve seat
ring.
2. After greasing the slots on the Valve Seat Ring (F515), slide the Main Valve (F514), and Valve Seat Ring (F515), over
the Lower Stem Rod (5F10), with the “UP” text facing up. Press the slots onto the ears by hand until the top of the ears
ush with top of main valve.
3. Follow the disassembly steps in "DISASSEMBLY FOR INSPECTION, MAIN VALVE INSPECTION", on page 10, in
reverse order for reassembly.
Note: Torque the nozzle section hardware to 60 Ft. Lbs..

page 16
OPTIONAL EQUIPMENT
EXTENSION KITS:
WARNING: For all of the following repair procedures, the
hydrant must be isolated or the system depressurized and
drained before removing the hydrant components. Failure
to do so may cause pressure to be released resulting in
severe injury or death.
1. Refer to "DISASSEMBLY FOR INSPECTION, MAIN
VALVE INSPECTION" on pages 10 and 11, steps 1
through 7 to access the Upper Stem Rod to disconnect
it.
2. Remove the Coupler Pin and Springpin from the Lower
Stem Rod (F510), and set the Upper Stem Rod and
Breakable Coupling assembly aside.
3. Connect the Extension Coupling (F512), to the Lower
Stem Rod using a new Coupling Pin (F507), and
Springpin (F38).
4. Connect the Extension Stem Rod (F513), to the
Extension Coupling (F512), with a Coupling Pin and
Springpin.
5. Connect the Breakable Coupling/Upper Stem Rod
assembly to the Extension Stem Rod with a Coupling
Pin and Springpin.
NOTE: Ensure that the Springpins are fully engaged on the
Coupling Pins.
6. Verify placement of the Flange O-ring (F73), on the
Lower Barrel, and place the Extension Barrel over the
Upper Stem Rod assembly and align with the bolt holes
on the Lower Barrel.
7. Attach the Extension Barrel with a Standpipe Flange
(F511), and mounting hardware.
NOTE: The text "THIS SIDE UP" faces the Nozzle Section
on both, Standpipe and Breakable Flanges.
NOTE: The Standpipe Flange and Breakable Flange use
the same raw casting. The Breakable Flange has been
machined on the engaging lip to weaken it to allow failure
during a trafc accident. Ensure that the Breakable Flange
is mounted on top of the Extension Barrel.
8. Follow the disassembly steps in "DISASSEMBLY FOR
INSPECTION, MAIN VALVE INSPECTION" in reverse
order for reassembly.
Note: Torque the nozzle section hardware to 60 Ft. Lbs..
F512
F513
F511
F506
F509
Machined lip on
Breakable Flange
Fig. 16
Extension Kit

page 17
TROUBLESHOOTING GUIDE
PROBLEM: Hydrant slams shut while closing.
Probable Cause: Play in Stem Rod assembly due to wear in Stem Rod Couplings.
Corrective action: Inspect Breakable Coupling and Extension Coupling ( if present ) for wear and replace if
necessary.
PROBLEM: Hydrant hard to operate.
Probable Cause: Operating Nut/ Thrust Nut assembly too tight.
Corrective action: Loosen the Thrust Nut Set Screw, tighten the Thrust Nut completely into the Nozzle section
then back off 1/8 of a turn. Tighten the Thrust Nut Set Screw.
Probable Cause: Operating Nut not lubricated.
Corrective action: Disassemble the Operating Nut/Thrust Nut assembly. Clean and re-lubricate using a food
grade grease.
PROBLEM: Nozzle 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 opens but will not close.
Probable Cause: The Breakable Coupling or Extension Coupling has broken or become
disconnected.
Corrective action: Remove the Nozzle Section and replace the affected Coupling.
PROBLEM: Hydrant will not drain.
Probable Cause: Drain holes may be plugged or blocked.
Corrective action: Loosen the Hose Nozzle Cap and slowly open the hydrant until water escapes from the
nozzle. DO NOT STAND IN FRONT OF THE NOZZLE! Tighten the cap and force ush the
drains. If the hydrant continues not to drain, the hydrant may have to be excavated to verify
that the drains have not been blocked by the concrete thrust block.
PROBLEM: Hydrant ow is low.
Probable Cause: Hydrant or supply vale is not fully open.
Corrective action: Verify that the hydrant is fully open. The AVK Series 67 hydrant main valve hits the stop in
the base after approximately10 turns. Also locate and verify that the isolation valve is fully
open.

page 18
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
PH: 775-552-1400
FAX: [phone]
www.americanavk.com
AMERICAN AVK COMPANY WARRANTY
SERIES 67 POST/FLUSHING HYDRANTS
American AVK Company warrants its Series 67 Hydrants to be free from defects in workmanship and materials for a
period of one (1) year from the date of shipment from American AVK Company except as noted. American AVK Company shall
have no obligation under this warranty unless it is notied of claims hereunder promptly and in writing upon discovery thereof
and within the warranty period, and unless the product is delivered to American AVK Company within thirty (30) days of such
notice.
American AVK shall have the right to inspect said product before it is removed from installation. If the product is removed from
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 a similar
product, repair the product, or refund the price paid for the product provided the product has been properly applied and used
under normal service and under conditions for which it is designed. American AVK Company shall not be liable for indirect,
special, incidental, or consequential damage or penalties and does not assume any liability of purchase to others or to anyone
for injury to persons or property.
THIS IS THE EXCLUSIVE WARRANTY GIVEN IN CONNECTION WITH THE SALE OF THIS PRODUCT. THERE ARE
NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING EXPRESSED OR IMPLIED WARRANTY OF
MERCHANTABILITY, OR ANY EXPRESSED OR IMPLIED WARRANTY OF SUITABILITY FOR ANY PARTICULAR
PURPOSE, GIVEN BY AMERICAN AVK COMPANY IN CONNECTION WITH THIS PRODUCT.