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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 LF985GD Series

Page 1: ...al 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 condition...

Page 2: ...e 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...

Page 3: ...ly 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 fro...

Page 4: ...ure 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...

Page 5: ...e 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...

Page 6: ...nter 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...

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 actio...

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: ...n 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...

Page 10: ...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 11: ...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 12: ...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...

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 re...

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...

Page 15: ...e 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...

Page 16: ...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 17: ...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 18: ...em 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...

Page 19: ...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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