background image

Size 

A

C

D

E (Dia.)

F

in

Pipe Size (in)

Min. Length (in)

in

in

in

in

1

 

1/4

1

3.12

0.38

0.25

0.44

0.55

1

 

1/2

1

3.12

0.38

0.25

0.44

0.50

1

 

1/4

3.38

0.38

0.25

0.44

0.50

2

 

1/2

2

4.0

0.38

0.38

0.56

0.62

2

 

1/2

4.5

0.50

0.38

0.56

0.62

3

5.0

0.50

0.44

0.56

0.62

6.50

0.62

0.44

0.56

0.62

6.  After removing the Stem Nut, the remainder of the Disc & Diaphragm Assembly should disassemble easily. Polish stem guide  

surfaces with fine emery cloth to remove any mineral deposits and inspect for excessive wear. Remove any mineral build-up from 

other components with wire 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 threaded into the body of the 

valve and require a seat removal tool (Figure 5) (Table 1 details the tool dimensions for seat removal). Valve seats 8" and larger are 

held in the valve body with stainless steel cap screws. Remove seat retaining screws and lift seat straight up (Figure 6).

Figure 6

*Schedule 40 steel pipe

Figure 5

Valve Body

Valve Seat

All-Thread

Nut and Washer

2PLCS

Angle or 

Channel Iron

120

B (Min)          

E  Dia. 4 Holes

    

 

90  Apart        

D         

TYP <3 PLCS>

    

 

120  Apart  

C TYP <3 PLCS>      

F       

A         

Table 1: Seat Removal Tool Dimension

8          IOM-A-ACV-910-11_610-11   2115 

EDP# 1917042 

© 2021 Watts

IOM-A-ACV-910-11_610-11   2115 

EDP# 1917042 

© 2021 Watts         9

Summary of Contents for AMES 910GD-11

Page 1: ...etting 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 to...

Page 2: ...rom damaging over pressure 1 Prior to installation 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...

Page 3: ...gure 1 If your valve 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...

Page 4: ...rol pressure set point by turning the Pressure Reducing Control adjustment screw IN clockwise STEP 2 Adjust the Surge Control by turning the adjustment screw OUT counterclockwise to decrease the downs...

Page 5: ...adjustment screw IN clockwise decreasing the rate of opening See Figure 4 Step 5 If the main valve comes equipped with a closing speed control otherwise ignore this step Closing Speed Needle Valve Ad...

Page 6: ...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 diaphragm...

Page 7: ...ly 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 for o...

Page 8: ...move 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 require...

Page 9: ...rush 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 thread...

Page 10: ...ts 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 integrit...

Page 11: ...el 9 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 Iro...

Page 12: ...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 cont...

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