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DeZURIK

 

APCO AVV 140/150 Air/Vacuum Valve with Optional CSV 

Surge Check Valve 

June 2019 

Page 5 

D12021 

Fusion/Powder Coated Valves  

 

 

Valves with fusion/powder coated exterior paint require flat washers to be 
installed under the flange nuts when installing the valve to the pipeline flange to 
prevent the paint from cracking or chipping.

 

Maintenance  

The APCO AVV-140/150 Air/Vacuum Valve with Optional CSV Surge Check Valve is automatic in 
operation and requires very little maintenance.  It should always be installed in a vertical position. 

 A semi-annual visual inspection for leakage is recommended.  A malfunction of the Air/Vacuum Valve 
can be identified by the seepage of water through the exhaust port, while malfunction of the Surge 
Check Valve would be a substantial amount of spillage through the Air/Vacuum exhaust port during 
pump start-up.  Should a malfunction occur, the following steps should be taken to repair the valve: 

Disassembly Procedure 

Air/Vacuum Valve 1-20” (25-500mm) Only 

See Figures 1-2 for part identification. 

For information regarding 24” (600mm) Air/Vacuum Valves, contact your local DeZURIK sales 
representative.

 

 

Servicing the Air/Vacuum Valve while the pipeline is under pressure can cause personal 
injury or equipment damage. Relieve pipeline pressure or shut off isolation valve before 
servicing the Air/Vacuum Valve. 

1.  Relieve pipeline pressure or shut off isolation valve at inlet to Surge Check Valve before 

servicing the Air Valve. 

 

Do not completely remove pipe plug or cover bolts while the valve is under pressure. 

2.  Slowly remove pipe plug near inlet of valve body (A1) to relieve internal pressure and to drain 

the unit. 

3.  Check to see if foreign matter or dirt is preventing float (A14) from seating properly against 

seat (A6). Clean as necessary. 

4.  Perform a seat test.  Replace pipe plug and slowly fill valve chamber by cracking open 

isolation valve on inlet pipe.  If seepage persists, repeat Steps 1 and 2 and proceed as 
follows: 

5.  Remove cover bolts (A4) and cover (A2).   

6.  Remove seat screws (A16/A34) and lift out seat (A6) from cover (A2). 

Содержание APCO AVV-140

Страница 1: ...DeZURIK Inc Sartell Minnesota USA Phone 320 259 2000 www dezurik com info dezurik com APCO AVV 140 150 AIR VACUUM VALVE WITH OPTIONAL CSV SURGE CHECK VALVE Instruction D12021 June 2019 ...

Страница 2: ...ion during shipment however items can be damaged in transport Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent Parts Replaceable wear parts are listed on the assembly drawing These parts can be stocked to minimize downtime Order parts from your local DeZURIK sales representative or directly from DeZURIK When ordering parts please provide th...

Страница 3: ...tion 4 Handling and Storage 4 Installation 4 Fusion Powder Coated Valves 5 Maintenance 5 Disassembly Procedure 5 Air Vacuum Valve 1 20 25 500mm Only 5 Surge Check Valve 3 24 80 600mm Only 6 Assembly Procedure 6 Surge Check Valve 3 24 80 600mm Only 6 Air Vacuum Valve 1 20 25 500mm Only 6 Operation 7 Drawings 8 Troubleshooting 12 ...

Страница 4: ...red around over the valve to keep off rain and mud Skid and set the assembly on a flat solid and well drained surface for protection from ground moisture runoff and pooled rain water Installation The Air Vacuum Valve with Surge Check Valve should always be installed in a vertical position An isolation valve between this unit and the transmission pipeline system is recommended Where to use High poi...

Страница 5: ...valve Disassembly Procedure Air Vacuum Valve 1 20 25 500mm Only See Figures 1 2 for part identification For information regarding 24 600mm Air Vacuum Valves contact your local DeZURIK sales representative Servicing the Air Vacuum Valve while the pipeline is under pressure can cause personal injury or equipment damage Relieve pipeline pressure or shut off isolation valve before servicing the Air Va...

Страница 6: ...available for the 1 2 25 50mm Surge Check Valves It is recommended to replace the complete valve 1 Install the parts inside the body S1 in the following order a Bushing S5 at the center of the hub b Spring S4 centering on the bushing S5 Note If conical spring smaller diameter of spring should fit the outside diameter of bushing c Plug S3 with the concave side facing upward d Seat S2 Tighten seat r...

Страница 7: ...loaded so that air passes through unrestricted When water rushes into the Surge Check Valve the disc begins to close against the spring tension and reduces the rate of flow of water into the air valve by means of throttling holes in the disc This ensures normal gentle closing of the Air Vacuum Valve regardless of the initial velocity flows involved and minimizes pressure surges when the valve clos...

Страница 8: ...DeZURIK APCO AVV 140 150 with CSV 1600 Option Slow Closing Air Vacuum Valves D12021 Page 8 June 2019 Drawings Figure 1 AVV 140 1 3 25 80mm Air Vacuum Valve ...

Страница 9: ...DeZURIK APCO AVV 140 150 Air Vacuum Valve with Optional CSV Surge Check Valve June 2019 Page 9 D12021 Drawings Continued Figure 2 AVV 150 4 20 100 500mm Air Vacuum Valve ...

Страница 10: ...DeZURIK APCO AVV 140 150 with CSV 1600 Option Slow Closing Air Vacuum Valves D12021 Page 10 June 2019 Drawings Continued Figure 3 CSV 3 24 80 600mm Surge Check Valve ...

Страница 11: ...DeZURIK APCO AVV 140 150 Air Vacuum Valve with Optional CSV Surge Check Valve June 2019 Page 11 D12021 Drawings Continued Figure 4 Connecting Parts ...

Страница 12: ...ange gasket Misalignment or damage to field piping and supports Adjust misalignment or repair piping or supports Damaged flange face s or improper flange connections Repair flange replace valve body or adjust flange connections Valve leaks out of outlet port Dirty seat and or float Clean seat and or float Worn seat and or float Replace seat and or float Line pressure is under 10 psi 70KPa Replace ...

Страница 13: ...ll be the only effective guarantee or warranty binding on Seller despite anything to the contrary contained in the purchase order or represented by any agent or employee of Seller in writing or otherwise notwithstanding including but not limited to implied warranties THE FOREGOING REPAIR AND REPLACEMENT LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OBLIGATIONS AND LIABILITIES INCLUDING ALL W...

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