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8.  Replace Seat Disc, Diaphragm and Spacer Washers provided in Main Valve repair kit (refer to Table 2 or 3 for correct repair kit part 

number). Re-assemble in the reverse order of disassembly.

9.    

 

Re-Install Disc and Diaphragm Assembly in the valve, taking care not to damage the lower guide area in the center of the valve    

  seat.

10.  Re-install Cover Spring. Replace Valve Cover and tighten Cover Nuts in a crossing pattern to ensure even distribution. Test the Disc 

and Diaphragm Assembly for smooth travel by following the Freedom of Movement Test procedure in previous section.

11.  Test the integrity of the Seat Seal by following the Seat Seal Test procedure in previous section.
12.  Return valve to service by following instructions on the Technical Bulletin matching the valve function.

Size (in)

1

 

1/4

1

 

1/2

2

2

 

1/2

10 

12 

14 

16 

P/N

0677-01

0677-01

0677-02

0677-03

0677-04

0677-05

0677-06

0677-07

0677-08

0677-09

0677-10

0677-11

Table 3: Reduced Port Valve (605GD/605AD) Repair Kits

Table 2: Full Port Valve (905GD/905AD) Repair Kits

8          IOM-A-ACV-981_681   2115 

EDP# 1917096 

© 2021 Watts

IOM-A-ACV-981_681   2115 

EDP# 1917096 

© 2021 Watts         9

Size (in)

3

4

6

8

10

12

16

20 & 24

P/N

0677-02

0677-04

0677-05

0677-06

0677-07

0677-08

0677-09

0677-11

Summary of Contents for AMES 681GD

Page 1: ...Commissioning the Pump Control Valve 3 Maintenance Schedule 6 Trouble Shooting Guide 6 Valve Disassembly Instructions 8 ACV Schematic 11 Local building or plumbing codes may require modifica tions to...

Page 2: ...starts and stops against a closed valve Pump Start Up When the pump is signaled to start the 3 Way So lenoid is energized directing pressure into the cover chamber of the 3 way Accelerator Pilot The A...

Page 3: ...unter clockwise to a full OUT position See Figure 1 STEP 2 Loosen a tube fitting or cover plug at the main valve to allow air to vent during start up Step 3 Energize the solenoid to check actuation an...

Page 4: ...ise increasing the rate of opening See Figure 3B STEP 10 Closing Speed Valve Adjustment The closing speed needle valve regulates fluid pressure into the main valve cover chamber con trolling the valve...

Page 5: ...ve specification sheets for approximate cover capacity A continuous flow of water from the open port indicates a damaged diaphragm or loose disc diaphragm assembly Disassemble valve and replace diaphr...

Page 6: ...re and adjust pressure reducing control if needed Main Valve will not close Closed isolation valves in pilot system Check isolation valves ensure open Diaphragm is damaged Conduct diaphragm seal test...

Page 7: ...Remove cover nuts and washers 3 Remove the cover If cover is not free to be removed loosen it by tapping upward along its outside edge with a dull cold chisel pic tured above a Large valves may requi...

Page 8: ...e brush or by using a Mineral Dissolving Solution Inspect parts for wear and replace if necessary 7 Inspect valve seat If seat is not damaged removal is not necessary Valve seats 6 and smaller are thr...

Page 9: ...mooth travel by following the Freedom of Movement Test procedure in previous section 11 Test the integrity of the Seat Seal by following the Seat Seal Test procedure in previous section 12 Return valv...

Page 10: ...s Steel 10 Diaphragm Washer ASTM A536 65 45 12 Epoxy Coated Ductile Iron 11 Diaphragm Buna N Nitrile 12 Disc Retainer ASTM A536 65 45 12 Epoxy Coated Ductile Iron 13 Seat Disc Buna N Nitrile 14 Spacer...

Page 11: ...IOM A ACV 981_681 2115 EDP 1917096 2021 Watts 11 NOTES...

Page 12: ...Watts USA Backflow T 978 689 6066 F 978 975 8350 AmesFireWater com USA Control Valves T 713 943 0688 F 713 944 9445 AmesFireWater com Canada T 888 208 8927 F 905 481 2316 AmesFireWater ca Latin Ameri...

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