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10          IOM-A-ACV-985_685   2115 

EDP# 1917102 

© 2021 Watts

IOM-A-ACV-985_685   2115 

EDP# 1917102 

© 2021 Watts         11

Installation: If unit is installed in any orientation other than 

horizontal (cover up) OR extreme space constraints exist, 

consult customer service prior to or at the time of order. 

NOTICE

ITEM

DESCRIPTION

MATERIAL

1

Pipe Plug

Lead Free Brass

2

Cover

ASTM A536 65-45-12 Epoxy Coated Ductile Iron

3

Cover Bearing

ASTM A276 304 Stainless Steel

4

Stud with Cover Nut & Washer

ASTM A570 Gr.33 Zinc Plated Steel

5

Upper Body

ASTM A536 65-45-12 Epoxy Coated Ductile Iron

6

Gasket Seal

Buna-N (Nitrile)

7

Body

ASTM A536 65-45-12 Epoxy Coated Ductile Iron

8

Stem Nut

ASTM A276 304 Stainless Steel

9

Lock Washer

ASTM A276 302 Stainless Steel

10

Diaphragm Washer

ASTM A536 65-45-12 Epoxy Coated Ductile Iron

11

Diaphragm*

Buna-N (Nitrile)

12

Inner Bearing Bolts**  (3" and Smaller)

ASTM A276 304 Stainless Steel

13

Inner Bearing Retainer**  (3" and Smaller)

ASTM A276 302 Stainless Steel

13A

Bearing Retaining Ring** (4" and Larger)

ASTM A276 302 Stainless Steel

14

Inner Bearing

ASTM A276 304 Stainless Steel

15

O-ring*

Buna-N (Nitrile)

16

O-ring*

Buna-N (Nitrile)

17

Upper Stem

ASTM A276 304 Stainless Steel

18

Lower Stem

ASTM A276 304 Stainless Steel

19

Spring

ASTM A276 302 Stainless Steel

20

Disc Retainer

ASTM A536 65-45-12 Epoxy Coated Ductile Iron

21

Spacer Washer*

NY300 Fiber

22

Disc*

Buna-N (Nitrile)

23

Disc Guide

ASTM A743 CF8M (316) Stainless Steel

24

Lock Washer

ASTM A276 304 Stainless Steel

25

Stem Nut

ASTM A276 304 Stainless Steel

26

Seat Ring***

ASTM A743 CF8M (316) Stainless Steel

26A

Seat Screw*** (8" and Larger)

ASTM A276 304 Stainless Steel

27

Seat Gasket *

Buna-N (Nitrile)

8

9

10

10

12

13A

13

14

15

16

17

18

19

20

21

22

23

24

26A

25

26

27

11

1

2

3

4

5

6

7

8

9

10

10

12

13A

13

14

15

16

17

18

19

20

21

22

23

24

26A

25

26

27

11

1

2

3

4

5

6

7

* Contained in Main Valve Repair Kit

**4 inch and larger valves do not require Bearing Bolts

***6 inch and smaller valves, Seat Ring is threaded

ACV Assembly Diagram – Series 985GD

Содержание AMES 985GD

Страница 1: ...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 the information provided You...

Страница 2: ...st be allowed for the valve to react to adjustments and the system to stabilize The objective is to bring the valve into service in a controlled manner to protect the system from damaging over pressur...

Страница 3: ...ement and remove excess air trapped within the cover chambers See Figure 1 Below To increase the rate of opening closing turn the adjustment screws on the speed controls OUT counterclockwise In decrea...

Страница 4: ...t located on the upper chamber While free flow goes into the lower chamber the Opening speed flow control restricts flow out of the upper cham ber of the main valve If valve opening is too slow turn t...

Страница 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...

Страница 6: ...Valve will not close Closed isolation valves in pilot system Check isolation valves ensure open Diaphragm is damaged Conduct diaphragm seal test repair and replace if necessary Main valve stem assembl...

Страница 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...

Страница 8: ...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 I...

Страница 9: ...bly 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 Re...

Страница 10: ...and Smaller ASTM A276 302 Stainless Steel 13A Bearing Retaining Ring 4 and Larger ASTM A276 302 Stainless Steel 14 Inner Bearing ASTM A276 304 Stainless Steel 15 O ring Buna N Nitrile 16 O ring Buna...

Страница 11: ...IOM A ACV 985_685 2115 EDP 1917102 2021 Watts 11 NOTES...

Страница 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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