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6

 

ES-A-ACV-LF981GD  2115 

© 2021 Watts

Flanged and Threaded

Grooved End

E

E

A

B

C

E

F

D

Valve  

Size

Globe Grooved

Cover To Center

Angle Grooved

Angle Grooved

Port Size

(npt)

Port Size

(npt)

Shipping Weights*

A

B

C

D

E

F

in.

in.

mm

in.

mm

in.

mm

in.

mm

in.

in.

lbs.

kgs.

1

 

1/4

8

 

1/2

216

5

 

1/2

140

4

 

1/4

108

3

 

1/4

83

 

3/8

1/4

25

11

1

 

1/2

8

 

1/2

216

5

 

1/2

140

4

 

1/4

108

3

 

1/4

83

 

3/8

1/4

25

11

2

9

229

6

 

1/2

165

4

 

3/4

121

3

 

1/4

83

 

3/8

 

1/2

40

18

21⁄2

11

279

7

 

1/2

191

51⁄2

140

4

102

 

1/2

 

1/2

65

29

3

121⁄2

318    

8

 

1/4

210

6

152

4

 

1/4

108

 

1/2

 

1/2

95

43

4

15

381

10

 

5/8

270

7

 

1/2

191

5

127

 

3/4

 

3/4

190

86

6

20

508

13

 

3/8

340

 

3/4

 

3/4

320

145

8

25

3/8

645

16

406

1

1

650

295

Grooved End Dimensions

Dimensions 

Flanged and Threaded Dimensions

I

H

B
C

D           

J

F

E

G

K

L

K

A

K

Valve 

Size

Globe Thread Globe 150#

Globe 300#

Cover To      

Center

Angle Thread Angle 150#

Angle 300# Angle Thread Angle 150#

Angle 300# Port Size 

NPT

Port Size 

NPT

Shipping         

Weights*

A

B

C

D

E

F

G

H

I

J

K

L

in.

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

in.

lbs.

kgs.

1

 

1/4

7

 

1/4

184

5

 

1/2

140

 

3/8

 

1/4

20

9

1

 

1/2

7

 

1/4

184

8

 

1/2

216

5

 

1/2

140

3

 

1/4

83

1

 

7/8

48

 

3/8

 

1/4

25

11

2

9

 

3/8

238

9

 

3/8

238

10

254

6

 

3/4

171

4

 

3/4

120

4

 

3/4

121

5

127

3

 

1/4

83

3

 

1/4

83

3

 

1/2

89

 

3/8

 

1/2

40

18

2

 

1/2

11

279

11

279 11

 

5/8

295

7

 

1/2

191

5

 

1/2

140

5

 

1/2

140

5

 

7/8

149

4

102

4

102 4

 

5/16

110

 

1/2

 

1/2

65

29

3

12

 

1/2

318

12

305 13

 

1/4

337

8

 

1/4

210

6

 

1/4

159

6

152

6

 

3/8

162

4

 

1/2

114

4

102

4

 

3/8

111

 

1/2

 

1/2

95

43

4

15

381 15

 

5/8

397 10

 

5/8

270

7

 

1/2

191

7

 

7/8

200

5

127 5

 

5/16

135

 

3/4

 

3/4

190

86

6

20

508

21

533

13

330

10

254 10

 

1/2

267

6

152

6

 

1/2

165

 

3/4

 

3/4

320

145

8

25

 

3/8

645 26

 

3/8

670

16

406

12

 

3/4

324 13

 

1/4

337

8

203

8

 

1/2

216

1

1

650

295

10

29

 

3/4

756 31

 

1/8

791

17

430

14

 

7/8

378 15

 

9/16

395

8

 

5/8

219 9

 

5/16

237

1

1

940

426

12

34

864 35

 

1/2

902 20

 

7/8

530

17

432 17

 

3/4

451

13

 

3/4

349 14

 

1/2

368

1

1

 

1/4

1500 680

14

39

991 40

 

1/2

1029 24

 

1/4

616

1

1

 

1/2

1675 760

16

41

 

3/8

1051 43

 

1/2

1105 25

 

1/4

640

       

1

2

3100 1406

ACV Schematic - Series LF981GD 

Summary of Contents for AMES LF981GD Series

Page 1: ...ractor in accordance with local codes and ordinances WARNING Need for Periodic Inspection Maintenance This product must be tested periodically in compliance with local codes but at least once per year...

Page 2: ...eam causing the valve to open at a controlled rate gradually admitting pumping pressure into the distribution system The rate of opening is con trolled by the adjustable opening speed control which re...

Page 3: ...This Ames Automatic Control Valve ACV is a full port single chamber basic valve that incorporates a one piece disc and dia phragm assembly This assembly is the only moving part within the valve allowi...

Page 4: ...530 1945 Pressure Drop psi 2 3 4 6 8 10 20 30 40 60 80 100 Flow Rate Gallons per minute Water 2 4 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000 100000 8 6 4 8 1 0 1 2 1 4 1 6 6 2 1 1 2 3 8 1 0...

Page 5: ...l 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...

Page 6: ...e NPT Port Size NPT Shipping Weights A B C D E F G H I J K L in in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in in lbs kgs 11 4 71 4 184 51 2 140 3 8 1 4 20 9 11 2 71 4 184 81 2 216 51...

Page 7: ...re causing the valve to close drip tight When the cover of the Accelerator Pilot is pressurized the main valve cover chamber is vented downstream dry drain or to atmo sphere wet drain causing the valv...

Page 8: ...the valve opens or closes The adjustable collar is normally set to contact the trip arm when the main valve is closed The collar can be positioned on the stem by loosening the set screw to actuate the...

Page 9: ...stomers Nitrile standard EPDM optional Viton optional Voltage 24VDC 24VAC or 120VAC Enclosure General Purpose NEMA 4 standard Explosion Proof NEMA 6 6P 7 9 optional Action Normally Open or Normally Cl...

Page 10: ...lve cover This causes the main valve to close until inlet pressure is again greater than outlet Standard Material Brass Housing and Body Stainless Steel Indicating Rod Optional Material Stainless Stee...

Page 11: ...on In the free flow direction the seat moves out of the flow path to all unrestricted flow Specifications Standard Flow Control Large Flow Control FLOW FLOW CLOSED Fluid Speed Controlled by Needle FLO...

Page 12: ...increasing the delivery pressure When a Model LFCP 15 is installed in the piping circuit of an Automatic Control Valve its throttling action causes the Main Valve to throttle open or closed according...

Page 13: ...ilot circuit speed controls and pilots The filter element can be accessed for cleaning by removing the clean out cap or may be cleaned by installing an optional blow down ball valve The wetted surface...

Page 14: ...re used in pilot lines to provide a positive shutoff in any override or maintenance situation for simple trouble shooting This 2 piece full port valve features bottom loaded stems PTFE seats and packi...

Page 15: ...r Size 1 4 3 4 NPT Model LF60 Flo Clean Strainers are used to filter the fluid pass ing through the pilot circuit and provide protection to pilot circuit speed controls and pilots It is installed in t...

Page 16: ...vel Body Material Stainless Steel Elastomers Buna N standard EPDM optional Viton optional Enclosure NEMA 1 3 4 and 13 General Purpose standard NEMA 1 7 and 9 Explosion Proof optional Electrical Form C...

Page 17: ...d exactly as removed Consult appropriate hydraulic schematic to ensure proper re assembly 6 Connect solenoid wiring leads to desired switching device using safe standard electrical practices 7 Wire th...

Page 18: ...De energize the solenoid prior to initial pump start STEP 5 Energize the solenoid at pump start to open the main valve checking that the main valve opens Air is vented through the loosened fitting Ti...

Page 19: ...olling the valve closing speed If the downstream pressure fluctuates slightly above the desired set point turn the adjustment screw OUT counterclockwise increasing the rate of closing STEP 11 De energ...

Page 20: ...valve 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 di...

Page 21: ...ation valves ensure open Diaphragm is damaged Conduct diaphragm seal test repair and replace if necessary Main valve stem assembly corroded damaged Inspect stem assembly clean replace if necessary Blo...

Page 22: ...require a lifting eye bolt to be installed in the valve stem accessory threads located on the very top of the valve stem 5 Before removing Stem Nut examine stem threads for mineral build up Remove dep...

Page 23: ...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 fol...

Page 24: ...s not work properly other costs resulting from labor charges delays vandalism negligence fouling caused by foreign material damage from adverse water conditions chemical or any other circumstances ove...

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