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10          IOM-A-ACV-984_684   2115 

EDP# 1917098 

© 2021 Watts

IOM-A-ACV-984_684   2115 

EDP# 1917098 

© 2021 Watts         11

Optional 

Xylan 

Coating

17A

6

1

2

3

4

5

7

8

9

11

12

13

14

15

16

17

18

10

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 and Washer

ASTM A570 Gr.33 Zinc Plated Steel

5

Body

ASTM A536 65-45-12 Epoxy Coated Ductile Iron

6

Spring

ASTM A276 302 Stainless Steel

7

Stem Nut

ASTM A276 304 Stainless Steel

8

Lock Washer

ASTM A276 304 Stainless Steel

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 Iron

13

Seat Disc* 

Buna-N (Nitrile)

14

Spacer Washer*  x5

NY300 Fiber*

15

Disc Guide

ASTM A743 CF8M (316) Stainless Steel

16

Shaft 

ASTM A276 304 Stainless Steel

17

Seat Ring**

ASTM A743 CF8M (316) Stainless Steel

17A

Seat Screw** (8" and Larger) 

ASTM A276 304 Stainless Steel

18

Seat Gasket*

Buna-N (Nitrile)

* Contained in Main Valve Repair Kit

**Note: 6 inch and Smaller Valves, Seat Ring is threaded

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

ACV Assembly Diagram – Series 984GD

Summary of Contents for AMES 984GD

Page 1: ...missioning 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 the...

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

Page 3: ...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 and to confirm connec tion t...

Page 4: ...lockwise increasing the rate of opening See Figure 3B If valve opening is too quick turn the adjustment screw IN clock wise decreasing the rate of opening See Figure 3A STEP 11 De energize the solenoi...

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: ...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...

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 984_684 2115 EDP 1917098 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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