Watts AMES LF985GD Series Manuale utente

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 approximate and are provided for reference only. For precise measurements, please contact

Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without

incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

Deep Well Pump Control Valve

Full Port Ductile Iron Dual Chamber Valve

Features

• Installed on branch of tee off main pumping header

• Normally open construction

• Discharges to atmosphere on pump start-up

• Closes slowly diverting pressure into system during pumping

cycle

• Opens slowly on pump shut-off

• Limit Switch turns pump off when valve is fully open

• Adjustable Opening and Closing Speed

• Solenoid equipped with Manual Operator

2(L)

CLOSES VALVE

OPENS VALVE

FLOW

X/Y

(Supply Pressure)

Engineering Specification

Standard Components

Options and Accessories

{L – Dual Limit Switch

1 – Main Valve (900GD - Dual Chamber)

2 – Limit Switch

3 – 4-Way Solenoid

4 – Adjustable Opening Speed

5 – Adjustable Closing Speed

Y – Y-Strainer

X – Isolation Cocks

LEAD FREE*

The information contained herein is not intended to replace the full

product installation and safety information available or the experi-

ence of a trained product installer. You are required to thoroughly

read all installation instructions and product safety information

before beginning the installation of this product.

NOTICE

*The wetted surface of this product contacted by consumable water

contains less than 0.25% of lead by weight.

Operation

The Deep Well Pump Control Valve is designed to minimize the

surges associated with the starting and stopping of well pumps.

The valve slowly opens and closes as required to control pumping

related surges. The 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 at an adjustable

rate, gradually admitting pumping pressure into the distribution

system. Rate of valve closure is controlled by the adjustable clos-

ing speed control, which restricts the speed at which fluid and

pressure evacuate the power chamber. The valve remains closed

during the pumping cycle.

Pump shutdown: When the pump is signaled to shut-off, the

4-Way Solenoid is de-energized, and directs fluid and pressure

into the power chamber (below the diaphragm), and relieves fluid

and pressure from the cover chamber (above the diaphragm). The

fluid and pressure relieved from the cover chamber is vented to

atmosphere or available floor drain. The valve opens at an adjust-

able rate, gradually reducing pumping pressure, allowing the

system check valve to slowly close. Rate of valve opening is con-

trolled by the adjustable opening speed control, which restricts

the speed at which fluid and pressure evacuate the cover cham-

ber. When the valve reaches the full open position, the limit switch

is actuated, turning the pump off.

Manual Operation: Engaging the Solenoid Manual operator

simulates power to the solenoid, manually closing the main valve.

Disengaging the Solenoid Manual operator returns the valve to

the open position.

Series LF985GD

Threaded = 400psi (27.6 bar)

150# Flanged = 250psi (17.2 bar)

300# Flanged = 400psi (27.6 bar)

Grooved End = 400psi (27.6 bar)

Operating Pressure

2(L)

CLOSES VALVE

OPENS VALVE

FLOW

X/Y

(Supply Pressure)

Globe Flanged Angle Flanged

Globe Threaded

Globe Grooved End

Angle Threaded

Angle Grooved End

Basic Valve Body Options

Standard Materials

Body and Cover: Ductile Iron ASTM A536

Coating: NSF Listed Fusion Bonded Epoxy

Lined and Coated

Trim: 316 Stainless Steel

Elastomers: Buna-N (standard)

EPDM (optional)

Viton™ (optional)

Nut, Spring and Stem: Stainless Steel

Anti-Scale (Optional): Xylan Coated Stem and Seat

Viton™ is a trademark of The Chemours Company FC, LLC

M Series Basic Valves

Deep Well Pump Control Valve

Full Port Ductile Iron Dual Chamber Basic Valve

ACV Schematic - Series LF985GD

This Ames ACV is a full port, dual chamber basic valve that

incorporates a one-piece disc and 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 travels to a full open position. When pressure

is balanced between the upper and lower diaphragm chambers,

the valve will hold an intermediate position until commanded to

modulate open or closed by the pilot control system.

Ames ACV Main Valves are Lead Free. The Ames ACV piloting

system contains Lead Free* components, ensuring all of our con-

figurations are Lead Free compliant.

Globe Pattern Dual Chamber Basic Valve (900GD)

Angle Pattern Dual Chamber Basic Valve (900AD)

Operating Temperature

Buna-N: 160°F (71°C) Maximum

EPDM: 300°F (140°C) Maximum

Viton™: 250°F (121°C) Maximum

Epoxy Coating**: 225°F (107°C) Maximum

** Valves can be provided without internal epoxy coating consult factory

Flow Data

Valve Travel

Valve Cover Chamber Capacity

2½

Valve Size (in) 2 2½ 3 4 6 8 10 12 14 16

Travel (in)

⅝ ¾

Valve Size (in) 2 2½ 3 4 6 8 10 12 14 16

fl.oz. 410 16 22 70

U.S. Gal 1

Valve Size - Inches 2 2½ 3 4 6 8 10 12 14 16

Maximum Continuous

Flow Rate Gpm (Water) 210 300 485 800 1850 3100 5000 7000 8500 11100

Maximum Intermittent

Flow Rate Gpm (Water) 265 390 590 1000 2300 4000 6250 8900 10800 14100

Minimum

Flow Rate Gpm (Water) 6 9 15 16 17 25 55 70 190 400

Factor GPM (Globe) 48 75 112 188 387 764 1215 1734 2234 3131

Factor GPM (Angle) 57 91 125 207 571 889 1530 1945

Pressure Drop (psi)

100

Flow Rate - Gallons per minute (Water)

2410 20 40 60 80 100 200 500 1000 2000 5000 10000 20000 100000

2½

Angle

Globe

CVSuggested

• 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 pressure drop.

• The CvFactor of a value is the flow rate in US GPM at 60°F that will

cause a 1psi drop in pressure.

• Cvfactor can be used in the following equations to determine Flow

(Q) and Pressure Drop (∆P):

Q (Flow) = Cv√∆P ∆P (Pressure Drop) = (Q/Cv)2

• The Cv factors stated are based upon a fully open valve.

• Many factors should be considered in sizing control valves

including inlet pressure, outlet pressure and flow rates.

• For sizing questions including cavitation analysis consult Watts

with system details.

ACV Schematic - Series LF985GD

Basic Valve

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

13A

24A

ITEM DESCRIPTION MATERIAL

1Pipe Plug Lead Free Brass

2Cover ASTM A536 65-45-12 Epoxy Coated Ductile Iron

3Cover Bearing ASTM A276 304 Stainless Steel

4Stud with Cover Nut and Washer ASTM A570 Gr.33 Zinc Plated Steel

5Upper Body ASTM A536 65-45-12 Epoxy Coated Ductile Iron

6Gasket Seal Buna-N (Nitrile)

7Body ASTM A536 65-45-12 Epoxy Coated Ductile Iron

8Stem Nut ASTM A276 304 Stainless Steel

9Lock Washer ASTM A276 302 Stainless Steel

10 Diaphragm Washer ASTM A536 65-45-12 Epoxy Coated Ductile 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 A536 65-45-12 Epoxy Coated Ductile Iron

19 Spacer Washer * NY300 Fiber

20 Disc * Buna-N (Nitrile)

21 Disc Guide ASTM A743 CF8M (316) Stainless Steel

22 Lock Washer ASTM A276 304 Stainless Steel

23 Stem Nut ASTM A276 304 Stainless Steel

24 Seat Ring*** ASTM A743 CF8M (316) Stainless Steel

24A Seat Screw*** (8" and Larger) ASTM A276 304 Stainless Steel

25 Seat Gasket * Buna-N (Nitrile)

* Contained in Main Valve Repair Kit

**4 inch and larger valves do not require Bearing Bolts

***Note: 6 inch and smaller valves, Seat Ring is threaded

13A

24A

ACV Schematic - Series LF985GD

Grooved End Dimensions

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.

620 508 13

⅜

340

1420 191

825

⅜

645 16 406 1 1 1 845 384

Dimensions

Flanged and Threaded Grooved End

HIJ

Flanged and Threaded Dimensions

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.

620 508 21 533 18

⁄

468 10 254 10

267 6152 6

165

340 154

825

⅜

645 26

⅜

670 21

554 12

324 13

337 8203 8

216 111665 302

10 29

756 31

⅛

791 23

⅜

594 14

⅞

378 15

⁄

395 8

⅝

219 9

⁄

237 1 1 1 980 445

12 34 864 35

902 29

⁄

745 17 432 17

451 13

349 14

368 11

11720 780

14 39 991 40

1029 33 838 11

12600 1180

41⅜

1051 43

1105 35 889 1 2 1 3300 1497

ACV Schematic - Series LF985GD

Model S4W

Front View showing Ports P and E

Model S4W

Back View showing Ports A and B

Normal Position Actuated Position

Specifications

Model S4W

3-Way Solenoid

Size:



" –

" NPT

Model S4W are pilot system 4-way solenoids. The solenoids can

control valves independently or in combination with other control

circuit pilots or accessories. Product is available with a wide range

of options including: voltage (24VDC, 24VAC or 120VAC), and

a range of enclosures (general service to watertight to explosion

proof).

Body Material: Brass (standard)***

Elastomers: 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: 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 such as drinking water, handwashing, food preparation, and

dishwashing. However, brass solenoids may be used as a replacement component in

a lead free Watts ACV main valve, as the wetted surface of a lead free Watts ACV main

valve including installed brass solenoids contains less than 0.25% of lead by weight.

Viton™ is a trademark of The Chemours Company FC, LLC

ACV Standard Components - Series LF985GD

Model LF51

Single Pole Double Throw Switch

LEAD FREE*

Item Description

1Limit Switch

2Bracket

3Stem

4Trip collar

5Set Screw

6Cap

7Wiper Ring*

8O-Ring*

9Guide

10 O-Ring*

11 Polypak*

12 Locknut

13 Body

14 Pin

15 Coupling

*Included in Repair Kit

Parts List

Model 51

Single Limit Switch

The Model 51 Single Limit Switch provides visual indication of

valve position, as well as remote electrical indication of "valve

open" or "valve closed". The single pole double throw Micro-

Switch can be connected to open or close an electrical circuit

when 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 (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

½ amp. 125 VDC

¼ amp. 250 VDC

½" Conduit Connection

*The wetted surface of this product contacted by consumable water

contains less than 0.25% of lead by weight.

Viton™ is a trademark of The Chemours Company FC, LLC

ACV Standard Components - Series LF985GD

LEAD FREE*

Model LFFC

Flow Control

Size: Standard Flow -

" MNPTx



" FNPT

High Flow -

" MxF NPT

A Flow Control is an adjustable device used for tuning valve per-

formance. It can be installed to either control the opening or clos-

ing the speed of the automatic control main valve. When the flow

is in the direction of the needle the flow control is an adjustable

restriction. In the free flow direction the seat moves out of the flow

path to all unrestricted flow.

Specifications

Standard Flow ControlLarge Flow Control

FLOW

CLOSED

Fluid Speed

Controlled by Needle

FLOW

External Threads

Internal Threads

FLOW

OPEN

Free Flow

Seat Full Open

Size: Standard Flow - ½" MNPT x ⅜" FNPT

High Flow - ½" MxF NPT

Body Material: Lead Free Brass

Stainless Steel (optional)

Seat: Lead Free Brass

Needle: Stainless Steel (304)

Elastomers: Buna-N (standard)

*The wetted surface of this product contacted by consumable water

contains less than 0.25% of lead by weight.

ACV Standard Components - Series LF985GD

LEAD FREE*

Inlet

Dimensions

SIZE DIMENSIONS WEIGHT

A B

in. in mm in mm lbs. kgs.

⁄

68 1

⁄

43 1.7 0.77

⅜

⁄

68 1

⁄

43 1.7 0.77

3 76 2 51 1.7 0.77

⁄

84 2

⁄

59 1.7 0.77

Model LF60-1

Y-Pattern Strainer

Size:

" –

" NPT

Model LF60-1 Y-Pattern Strainers are used to filter the fluid pass-

ing through the pilot circuit, and provide protection to 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 Silicon Alloy

Cap Gasket: EPDM

Pressure Rating: 400psi (27.6 bar)

Filter Element: 304 Stainless Steel

Mesh Options: 60 Mesh (standard)

100 Mesh (optional)

Specifications

Model LF60-1

ACV Standard Components - Series LF985GD

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