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ES-A-ACV-LF985GD

Engineering Specification, Installation, Operation and Maintenance

Deep Well Pump Control Valve

Sizes: 6" to 24" 

NOTICE

For Australia and New Zealand: Pipeline strainers should be 

installed between the upstream shutoff valve and the inlet of  

the backflow preventer.

It’s important that this device be tested periodically in compli-

ance with local codes, but at least once per year or more as 

service conditions warrant. If installed on a fire sprinkler system, 

all mechanical checks, such as alarm checks and backflow  

preventers, should be flow tested and inspected internally in  

accordance with NFPA 13 and NFPA 25.

WARNING

!

Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information 

can result in death, serious personal injury, property 

damage, or damage to the equipment.
Keep this Manual for future reference.

Local building or plumbing codes may require modifica-

tions to the information provided.  You are required to  

consult the local building and plumbing codes prior 

to installation.  If the information provided here is not 

consistent with local building or plumbing codes, the 

local codes should be followed.  This product must be 

installed by a licensed contractor 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 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 service intended.  Regular checking and 

cleaning of the product’s internal and external components 

helps assure maximum life and proper product function. 

WARNING

!

CLOSES VALVE

OPENS VALVE

FLOW

Series LF985GD / LF685GD

Table of Contents  

Page

Engineering Specifications 

ACV Schematic

  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Basic Valves

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Standard Components

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Optional Components

  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installation, Operation and Maintenance 

Installation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Valve Servicing Dimensions

  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Commissioning the Deep Well Pump Control

. . . . . . . . . . . . . . . . 14

ACV Maintenance Schedule

  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Troubleshooting Guide

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Valve Disassembly Instructions

. . . . . . . . . . . . . . . . . . . . . . . 18

LF985GD

Submittal Package

Watts product specifications in U.S. customary units and metric are ap prox i mate and are pro vid ed for ref er ence only. For precise mea sure ments, please contact 

Watts Tech ni cal Ser vice. Watts re serves the right to change or modify prod uct de sign, con struc tion, spec i fi ca tions, or ma te ri als with out prior notice and without 

in cur ring any ob li ga tion to make such chang es and mod i fi ca tions on Watts prod ucts previously or sub se quent ly sold.

Summary of Contents for AMES LF685GD Series

Page 1: ...cal 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 service i...

Page 2: ...he pump starts and stops against 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 atmo sphere or available floor drain The valve closes a...

Page 3: ...bly 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 travels to a full ...

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: ...enter 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 6 20 508 21 533 187 16 468 10 254 101 2 267 6 152 61 2 165 3 4 3 4 3 4 340 154 8 253 8 645 263 8 670 213 4 554 123 4 324 131 4 337 8 203 81 2 216 1 1 1 665 302 10 ...

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: ...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 11: ...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 12: ...e switches at the desired point of valve travel 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 ...

Page 13: ... 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 6 Connect solenoid wiring leads to desired switching device using safe standard electrical practices 7 Wire the limit switch...

Page 14: ... of movement 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 decrease the rate of opening closing turn the adjustment screws on the speed controls IN clockwise STEP 2 Prior to pump start energize the solenoid to confirm connection to power source STEP 3 De ene...

Page 15: ...ee 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 See Figure 2A STEP 8 At valve full open position deep well pump wi...

Page 16: ...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 17: ...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 18: ...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 19: ...es 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 not ...

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