Watts LFM513-5 Series User manual

ES-ACV-LFM513-5

Engineering Specification, Installation, Operation and Maintenance

Pump Control Valve with Mechanical Check Feature

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 LFM513-5 / LFM6513-5

Table of Contents Page

Engineering Specifications

ACV Schematic ........................................2

Basic Valves ...........................................3

Standard Components...................................7

Optional Components ..................................13

Installation, Operation and Maintenance

Installation............................................15

Valve Servicing Dimensions ..............................15

Commissioning the Pump Control Valve ....................16

ACV Maintenance Schedule .............................18

Troubleshooting Guide ..................................19

Valve Disassembly Instructions ....................... 20

LFM513-5

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 with-

out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

Engineering Specification

Pump Control Valve with Mechanical Check Feature

Full Port Ductile Iron Dual Chamber Valve with Mechanical Check Feature

Features

• Opens at adjustable rate on pump start-up

• Closes at adjustable rate on pump shut-off

• Limit Switch turns pump off when valve closes

• Built-in Mechanical Lift-Check Feature prevents flow reversal

• Solenoid equipped with Manual Operator

Y/FC Y/FC

4(L)

CLOSES VALVE

OPENS VALVE

FLOW

Standard Components

Options and Accessories

{FC – Flo-Clean Strainer

{L – Dual Limit Switch

Operation

1 – Main Valve (M518 — Dual Chamber with Lift-Check)

2 – 4-Way Solenoid

3 – Check Valve

4 – Limit Switch

5 – Adjustable Opening Speed

6 – 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.

The Pump Control Valve is designed to minimize the surges asso-

ciated with the starting and stopping of pumps. The valve slowly

opens and closes as required to control pumping related surges.

The pump starts and stops against a closed valve.

Pump start up: When the pump is signaled to start, the 4-Way

Solenoid is 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 pres-

sure relieved from the cover chamber is vented to atmosphere or

available floor drain. The valve opens at an adjustable rate, gradu-

ally admitting pumping pressure into the distribution system. Rate

of valve opening is controlled by the adjustable opening speed

control, which restricts the speed at which fluid and pressure

evacuate the cover chamber. The valve remains fully open 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 cover chamber (above the diaphragm), and relieves fluid and

pressure from the power chamber (below the diaphragm). The fluid

and pressure relieved from the power chamber is vented to atmo-

sphere or available floor drain. The valve closes at an adjustable

rate, gradually reducing pumping pressure. Rate of valve closure is

controlled by the adjustable closing speed control, which restricts

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

ber. When the valve reaches the closed position, the limit switch is

actuated, turning the pump off.

Emergency Closure: The valve is equipped with a Mechanical

Check Feature, which acts independent of diaphragm position, and

provides immediate closure when flow ceases.

Manual Operation: Engaging the Solenoid Manual operator

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

Disengaging the Solenoid Manual operator returns the valve to the

closed position.

Series LFM513-5

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

M Series Basic Valves

Pump Control Valve with Mechanical Check Feature

Full Port Ductile Iron Dual Chamber Basic Valve with Mechanical Check Feature

Y/FC Y/FC

4(L)

CLOSES VALVE

OPENS VALVE

FLOW

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

ACV Schematic - Series LFM513-5

This Watts ACV is a full port, dual chamber basic valve that incor-

porate a two-piece telescoping 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. The lower por-

tion of this two-piece assembly is a mechanical check feature, which

acts independent of diaphragm position or pilot control system, and

provides immediate check action when flow ceases.

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.

Watts ACV Main Valves are Lead Free. The Watts ACV piloting sys-

tem contains Lead Free* components, ensuring all of our configura-

tions are Lead Free compliant.

Globe Pattern Dual Chamber Basic Valve with Mechanical Check

Feature (M518)

Angle Pattern Dual Chamber Basic Valve with Mechanical Check

Feature (M1518)

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 LFM513-5

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

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 & 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 Upper Stem ASTM A276 304 Stainless Steel

18 Lower Stem ASTM A276 304 Stainless Steel

19 Spring ASTM A276 302 Stainless Steel

20 Disc Retainer ASTM A536 65-45-12 Epoxy Coated Ductile Iron

21 Spacer Washer* NY300 Fiber

22 Disc* Buna-N (Nitrile)

23 Disc Guide ASTM A743 CF8M (316) Stainless Steel

24 Lock Washer ASTM A276 304 Stainless Steel

25 Stem Nut ASTM A276 304 Stainless Steel

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

26A Seat Screw*** (8" and Larger) ASTM A276 304 Stainless Steel

27 Seat Gasket * Buna-N (Nitrile)

13A

26A

13A

26A

* Contained in Main Valve Repair Kit

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

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

ACV Schematic - Series LFM513-5

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

Grooved End Dimensions

Dimensions

Flanged and Threaded Grooved End

HIJ

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

Flanged and Threaded Dimensions

ACV Schematic - Series LFM513-5

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 LFM513-5

LEAD FREE*

Model CK

Check Valve

Size: ¼" – 1" NPT

Model CK Check Valves are pilot line check valves. In typical

applications these low cracking pressure in-line checks provide a

hydraulic check feature to a pilot system. When the main valve outlet

pressure exceeds inlet pressure, fluid is directed from the outlet to

the main valve 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 Steel Housing and Body Disc

Viton™ (¼" – ½")

PTFE (1")

Pressure Rating: 400psi (27.6 bar)

Body

Spring

Retainer

Stem

Adaptor

Disc

Disc Holder

Specifications

*The wetted surface of this product contacted by consumable

water contains less than 0.25% of lead by weight.

Model LFCK

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

ACV Standard Components - Series LFM513-5

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 LFM513-5

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 LFM513-5

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