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ES-A-ACV-LF985GD-20  2115 

© 2021 Watts

Dimensions

Flanged and Threaded

Grooved End

Valve  

Size

Globe Grooved

Cover To Center

Angle Grooved

Angle Grooved

Port Size

(npt)

Port Size

(npt)

Port Size

(npt)

Shipping Weights*

A

B

C

D

E

F

G

in.

in.

mm

in.

mm

in.

mm

in.

mm

in.

in.

in.

lbs.

kgs.

2

9

229

6

 

1/2

165

4

 

3/4

121

3

 

1/4

83

 

3/8

 

1/2

1/2

50

23

21⁄2

11

279

7

 

1/2

191

51⁄2

140

4

102

 

1/2

 

1/2

1/2

85

39

3

121⁄2

318    

8

 

1/4

210

6

152

4

 

1/4

108

 

1/2

 

1/2

1/2

125

57

4

15

381

10

 

5/8

270

7

 

1/2

191

5

127

 

3/4

 

3/4

3/4

250

114

6

20

508

13

 

3/8

340

 

3/4

 

3/4

1

420

191

8

25

 

3/8

645

16

406

1

1

1

845

384

Grooved End Dimensions

L

K

K

M

D

K

A
B

C

H I J

E

F

G

A

B

F

E

G

E

E

C

D

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

Port 

Size 

NPT 

Shipping 

Weights*

A

B

C

D

E

F

G

H

I

J

K

L

M

in.

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

in.

in.

in.

lbs.

kgs.

2

9

 

3/8

238

9

 

3/8

238

10

254

9

230

4

120

4

 

3/4

121

5

127

3

 

1/4

83

3

 

1/4

83

3

 

1/2

89

 

3/8

 

1/2

 

1/4

45

20

2

 

1/2

11

279

11

279 11

 

5/8

295 10

 

5/16

262

5

 

1/2

140

5

 

1/2

140

5

 

7/8

149

4

102

4

102 4

 

5/16

110

 

1/2

 

1/2

 

1/2

70

32

3

12

 

1/2

318

12

305 13

 

1/4

337 11

 

1/2

  291

6

 

1/4

159

6

152

6

 

3/8

162

4

 

1/2

114

4

102

4

 

3/8

111

 

1/2

 

1/2

 

1/2

100

45

4

15

381 15

 

5/8

397 14

 

3/8

365

7

 

1/2

191

7

 

7/8

200

5

127 5

 

5/16

135

 

3/4

 

3/4

 

1/2

200

91

6

20

508

21

533 18

 

7/16

468

10

254 10

 

1/2

267

6

152

6

 

1/2

165

 

3/4

 

3/4

 

3/4

340 154

8

25

 

3/8

645 26

 

3/8

670 21

 

3/4

  554

12

 

3/4

324 13

 

1/4

337

8

203

8

 

1/2

216

1

1

1

665 302

10

29

 

3/4

756 31

 

1/8

791 23

 

3/8

594

14

 

7/8

378 15

 

9/16

395

8

 

5/8

219 9

 

5/16

237

1

1

1

980 445

12

34

864 35

 

1/2

902 29

 

5/16

745

17

432 17

 

3/4

451

13

 

3/4

349 14

 

1/2

368

1

1

 

1/4

1

1720 780

14

39

991 40

 

1/2

1029 33

838

1

1

 

1/2

1

2600 1180

16

41 3/8

1051 43

 

1/2

1105 35

889

1

2

1

3300 1497

Flanged and Threaded Dimensions

ACV Schematic - Series LF985GD-20 

Summary of Contents for AMES LF685GD-20 Series

Page 1: ... 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 or more as service conditions warrant All products must be retested once maintenance has been performed Corrosive water conditions and or unauthorized adjustments or repair could render the product ineffective for the servic...

Page 2: ... an open valve Pump start up When the pump is signaled to start the 4 Way Solenoid is energized and directs fluid and pressure into the cover chamber above the diaphragm and relieves fluid and pressure from the power chamber below the diaphragm The fluid and pressure relieved from the cover chamber is vented to atmosphere or available floor drain The valve closes at an adjustable rate gradually ad...

Page 3: ...diaphragm assembly This assembly is the only moving part within the valve allowing it to open or close as commanded by the pilot control system When pressure is applied to the upper diaphragm chamber and released from the lower diaphragm chamber the valve travels to a closed position When pressure is applied to the lower diaphragm chamber and released from the upper diaphragm chamber the valve tra...

Page 4: ...sure 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 1 4 1 6 1 2 1 0 8 6 4 3 2 1 2 2 1 2 1 0 8 6 4 3 2 1 2 2 Angle Globe C V Suggested Maximum continuous flow based on velocity of 20 ft per second Maximum intermittent flow based on velocity of 25 ft per second Minimum flow rates based on a 20 40 psi pr...

Page 5: ...le 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 Stem ASTM A276 304 Stainless Steel 18 Disc Retainer ASTM ...

Page 6: ...ng Weights A B C D E F G H I J K L M in in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in in in lbs kgs 2 93 8 238 93 8 238 10 254 9 230 4 120 43 4 121 5 127 31 4 83 31 4 83 31 2 89 3 8 1 2 1 4 45 20 21 2 11 279 11 279 115 8 295 105 16 262 51 2 140 51 2 140 57 8 149 4 102 4 102 45 16 110 1 2 1 2 1 2 70 32 3 121 2 318 12 305 131 4 337 111 2 291 61 4 159 6 152 63 8 162 41 2 114 4 102 43...

Page 7: ... EPDM optional Viton optional Voltage 24VDC 24VAC or 120VAC Enclosure General Purpose NEMA 4 standard Explosion Proof NEMA 6 6P 7 9 optional Action 4 Way Actuation Solenoid Action only Main valve action energize to open or energize to close is dependent on the particulars of the pilot system Brass solenoids are not lead free and it is illegal to use them in potable services in the United States su...

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 switch at the desired point of valve travel Single Pole Double Throw Switch Common Lug Normally Open Normally Closed Specifications Body Material Stainless Steel Elastomers Buna N standard EPDM opti...

Page 9: ...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 FLOW External Threads Internal Threads FLOW OPEN Free Flow Seat Full Open Size Standard Flow MNPT x 3 8 FNPT High Flow 1 2 MxF NPT Body Material Lead Free Brass Stainless Steel optional Seat Lead Free Br...

Page 10: ...crew clockwise raises the control set point Turning the adjustment screw counterclockwise lowers the control setpoint The LFPV20C is equipped with one 1 2 NPT inlet and outlet port and a 1 4 NPT side sensing port located on the power chamber The 1 4 side sensing port is used to monitor upstream or down stream pressure as required by specific valve function Body Material Lead Free Copper Silicon Al...

Page 11: ...pilot 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 of this product contacted by consumable water contains less than 0 25 of lead by weight Body Material Lead Free Copper Silicon Alloy CF8M 316 Stainless Steel optional Retainer Cap Lead Free Copper S...

Page 12: ...are 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 packing Size Dimensions Weight C H L in in mm in mm in mm lbs kg 1 4 113 16 46 37 16 87 13 4 45 0 4 0 2 3 8 113 16 46 37 16 87 13 4 45 0 4 0 2 1 2 113 16 46 37 16 87 115 16 50 0 4 0 2 3 4 21 4 57 4 101 25...

Page 13: ...er 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 the inlet body port of the Main Valve exposing the strainer element to main line flow The currents and flow across the screen create a self scouring effect cleaning the filter element The wetted surfa...

Page 14: ...avel 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 SPDT Switch 15 amp 125 250 or 480 VAC amp 125 VDC amp 250 VDC Conduit Connection The wetted surface of this product contacted by consumable water contains less than 0 25 of lead by weight Item Descr...

Page 15: ...e made during installation to protect the piping circuit from dam age Only remove the pilot control system from the valve if necessary Tubing and fittings should be kept clean and replaced exactly as removed Consult appropriate hydraulic schematic to ensure proper re assembly 5 Connect solenoid wiring leads to desired switching device using safe standard electrical practices 6 Wire the limit switc...

Page 16: ...e See Figure 2B below In decrease the rate of opening closing turn the adjustment screws on the speed controls IN clockwise See Figure 2A below STEP 2 Prior to pump start energize the solenoid to confirm connection to power source STEP 3 De energize the solenoid prior to initial pump start STEP 4 Energize the solenoid at pump start to close the main valve checking that the main valve closes STEP 5...

Page 17: ...ber 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 the adjustment screw OUT counterclockwise increasing the rate of opening If valve opening is too quick turn the adjustment screw IN clock wise decreasing the rate of opening STEP 10 At valve full open position deep well pump wil...

Page 18: ...t 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 diaphragm or tighten disc diaphragm assembly Test 2 Seat Seal Test 1 Close downstream isolation valve and install pressure gauges on an open inlet and outlet port of main valve 2 Open upstream isolatio...

Page 19: ...lation 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 Blockage in main valve Perform freedom of movement test if valve does not close disassemble and remove blockage Worn damaged valve seat Perform seat sealing check disassemble and inspect re pair seat if...

Page 20: ...tem Nut examine stem threads for mineral build up Remove deposits with a fine wire brush Extreme care should be taken not to damage the finish on stem guiding surfaces when disassembling Avoid applying pipe wrenches to top or bottom stem guide surfaces 6 After removing the Stem Nut the remainder of the Disc Diaphragm Assembly should disassemble easily Polish stem guide surfaces with fine emery clo...

Page 21: ...does 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 over which the Company has no control This warranty shall be invalidated by any abuse misuse misapplication improper installation or improper maintenance or alteration of the product Some States do no...

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