background image

Size (in)

3

4

6

8

10

12

16

20 & 24

P/N

0677-01

0677-01

0677-02

0677-03

0677-04

0677-05

0677-09

0677-11

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

10          IOM-A-ACV-912_612   2115 

EDP# 1917034 

© 2021 Watts

IOM-A-ACV-912_612   2115 

EDP# 1917034 

© 2021 Watts         11

Summary of Contents for Ames 612GD

Page 1: ...2 Setting the Pressure Reducing Control 3 Maintenance Schedule 6 Trouble Shooting Guide 6 Valve Disassembly Instructions 8 ACV Schematic 11 Local building or plumbing codes may require modifica tions...

Page 2: ...ion flush line to remove debris 2 Install valve so the flow arrow matches flow through the line and gauges to monitor valve inlet and outlet pressures A Position Indicator can be installed to provide...

Page 3: ...e does not include a bleed valve bleed air by loosen ing a fitting on the valve or a plug at the highest point of the valve assembly STEP 3 Pressure the line by opening the upstream isolation valve sl...

Page 4: ...into the cover and restricted flow out of the cover of the main valve If recovery of pressure is slow upon increased downstream demand turn the adjustment screw OUT counterclockwise increasing the rat...

Page 5: ...ief Sustaining Control screw IN clockwise until the inlet pressure begins to increase or OUT counterclockwise to decrease stopping at the desired pressure See Figure 4 Step 4 Allow pressure to stabili...

Page 6: ...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 7: ...embly by partially opening from full closed position Improperly configured opening speed control if equipped Adjust opening speed control to verify functionality adjust as required Standard setting fo...

Page 8: ...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 9: ...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 10: ...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 integ...

Page 11: ...Stem Washer ASTM A276 304 Stainless 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...

Page 12: ...sts resulting from labor charges delays vandalism negligence fouling caused by foreign material damage from adverse water conditions chemical or any other circumstances over which the Company has no c...

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