Watts LFM513-14 Series User manual

ES-ACV-LFM513-14
Engineering Specification, Installation, Operation and Maintenance
Deep Well Control Valve with Pressure Relief Feature
Sizes: 2" 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
(Supply Pressure)
Series LFM513-14 / LFM6513-14
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 Deep Well Pump Control ................16
ACV Maintenance Schedule .............................18
Troubleshooting Guide ..................................19
Valve Disassembly Instructions ....................... 20
LFM513-14
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.

2
ES-ACV-LFM513-14 2115 © 2021 Watts
Engineering Specification
Deep Well Control Valve with Pressure Relief Feature
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
• Pressure Relief Feature protects system during pumping cycle
• Adjustable Opening and Closing Speed
• Solenoid equipped with Manual Operator
• Relief setpoint is adjustable
1
4
XX
X
X
X
6
2(L)
5
CLOSES VALVE
OPENS VALVE
FLOW
X/Y
(Supply Pressure)
3
Standard Components
Options and Accessories
{FC – Flo-Clean Strainer
{L – Dual Limit Switch
Operation
1 – Main Valve (M500 - Dual Chamber)
2 – Limit Switch
3 – 4-Way Solenoid
4 – Adjustable Opening Speed
5 – Adjustable Closing Speed
6 – Pressure Relief Control
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 Deep Well Pump Control Valve with Pressure Relief Feature is
designed to minimize the surges associated with the starting and
stopping of well pumps, and open, relieving excessive pressure,
during the pumping cycle. 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 atmosphere
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 closing speed
control, which restricts the speed at which fluid and pressure
evacuate the power chamber. The valve remains closed during the
pumping cycle.
Pressure Relief Feature: During the pumping cycle, the valve acts
as a pressure relief valve. The valve, which is closed during the
pumping cycle, senses header pressure and quickly opens when
header pressure exceeds the pilot setting, relieving excess pres-
sure. When header pressure is lowered below the pilot setting, the
valve closes.
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 atmo-
sphere or available floor drain. The valve opens at an adjustable
rate, gradually reducing pumping pressure, allowing the system
check valve to slowly close. 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. 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 LFM513-14

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ES-ACV-LFM513-14 2115 © 2021 Watts
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
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 Control Valve with Pressure Relief Feature
Full Port Ductile Iron Dual Chamber Basic Valve
ACV Schematic - Series LFM513-14
This Watts 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.
Watts ACV Main Valves are Lead Free. The Watts ACV piloting
system contains Lead Free* components, ensuring all of our con-
figurations are Lead Free compliant.
Globe Pattern Dual Chamber Basic Valve (M500)
Angle Pattern Dual Chamber Basic Valve (M1500)
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

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ES-ACV-LFM513-14 2115 © 2021 Watts
Flow Data
Valve Travel
Valve Cover Chamber Capacity
2½
4
10
6
8
2
3
12
14
16
2½
4
10
6
8
2
3
12
14 16
Valve Size (in) 2 2½ 3 4 6 8 10 12 14 16
Travel (in)
½ ⅝ ¾
11
½
22
½
33
½
4
Valve Size (in) 2 2½ 3 4 6 8 10 12 14 16
fl.oz. 410 16 22 70
U.S. Gal 1
¼ 2 ½
46
½ 9 ½
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)
2
3
4
6
8
10
20
30
40
60
80
100
Flow Rate - Gallons per minute (Water)
2410 20 40 60 80 100 200 500 1000 2000 5000 10000 20000 100000
8
6
14
16 12
10
8
6
4
3
2½
2
12
10
8
6
4
3
2½
2
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 LFM513-14

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ES-ACV-LFM513-14 2115 © 2021 Watts
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
8
9
10
10
12
13A
13
14
15
16
17
18
19
20
21
22
23
24
24A
25
11
1
2
3
4
5
6
7
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
8
9
10
10
12
13A
13
14
15
16
17
18
19
20
21
22
23
24
24A
25
11
1
2
3
4
5
6
7
ACV Schematic - Series LFM513-14

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ES-ACV-LFM513-14 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
½
165 4
¾
121 3
¼
83
⅜ ½ ½
50 23
2½ 11 279 7
½
191 5½ 140 4102
½ ½ ½
85 39
312½ 318 8
¼
210 6152 4
¼
108
½ ½ ½
125 57
415 381 10
⅝
270 7
½
191 5127
¾ ¾ ¾
250 114
620 508 13
⅜
340
¾ ¾
1420 191
825
⅜
645 16 406 1 1 1 845 384
Grooved End Dimensions
L
KK
M
D
K
A
B
C
HIJ
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.
29
⅜
238 9
⅜
238 10 254 9230 4120 4
¾
121 5127 3
¼
83 3
¼
83 3
½
89
⅜ ½ ¼
45 20
2 ½
11 279 11 279 11
⅝
295 10
⁄
262 5
½
140 5
½
140 5
⅞
149 4102 4102 4
⁄
110
½ ½ ½
70 32
312
½
318 12 305 13
¼
337 11
½ 291 6 ¼
159 6152 6
⅜
162 4
½
114 4102 4
⅜
111
½ ½ ½
100 45
415 381 15
⅝
397 14
⅜
365 7
½
191 7
⅞
200 5127 5
⁄
135
¾ ¾ ½
200 91
620 508 21 533 18
⁄
468 10 254 10
½
267 6152 6
½
165
¾ ¾ ¾
340 154
825
⅜
645 26
⅜
670 21
¾ 554 12 ¾
324 13
¼
337 8203 8
½
216 111665 302
10 29
¾
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
½
902 29
⁄
745 17 432 17
¾
451 13
¾
349 14
½
368 11
¼
11720 780
14 39 991 40
½
1029 33 838 11
½
12600 1180
16
41⅜
1051 43
½
1105 35 889 1 2 1 3300 1497
Flanged and Threaded Dimensions
ACV Schematic - Series LFM513-14

Model S4W
Front View showing Ports P and E
Model S4W
Back View showing Ports A and B
Normal Position Actuated Position
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ES-ACV-LFM513-14 2115 © 2021 Watts
Specifications
Model S4W
3-Way Solenoid
Size:

" –
½
" 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 LFM513-14

Model LF51
Single Pole Double Throw Switch
8
ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
10
11
12
14
6
7
9
13
15
8
5
4
3
2
1
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 LFM513-14

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ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
Model LFFC
Flow Control
Size: Standard Flow -
½
" MNPTx

" FNPT
High Flow -
½
" 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
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 LFM513-14

10
ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
ACV Standard Components - Series LFM513-14
*The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
Model LFPV20C
Pressure Relief, Sustaining or
Backpressure Pilot
Size:
½
" NPT
The Model LFPV20C is a remote sensed direct acting, diaphragm
actuated Pilot that is used on various configurations of Automatic
Control Valves.
It is normally held closed by the force of the adjustable spring
setting above the diaphragm. It modulates toward an open posi-
tion when control pressure, exerting force below the diaphragm,
exceeds the spring setpoint, and modulates toward a closed
position when the control pressure falls below the spring setpoint.
The LFPV20C senses control pressure through a tapped port
below the diaphragm. The large diaphragm-to-seat ratio allows
it to open and close within tight pressure tolerances, accurately
positioning the Main Valve.
Turning the adjustment screw clockwise raises the control set-
point. Turning the adjustment screw counterclockwise lowers the
control setpoint.
The LFPV20C is equipped with one ½" NPT inlet and outlet port
and a ¼" NPT side sensing port located on the power chamber.
The ¼" side sensing port is used to monitor upstream or down-
stream pressure as required by specific valve function. Body Material: Lead Free Copper Silicon Alloy
Seat: 316 Stainless Steel
Elastomers: Buna-N (standard)
Viton™ (optional)
EPDM (optional)
Inlet Pressure Rating: 400psi (27.6 bar) maximum
Adjustment Rating: 20-200psi (1.4 - 13.8 bar) (standard)
0-30psi (0 - 2.1 bar) (optional)
100-300psi (6.9 - 20.7 bar) (optional)
200-450psi (13.8 - 31.0 bar) (optional)
Specifications
Model LFPV20C
Sense Port
Outlet
Inlet
1
2
3
4
5
7
9
10
11
8
6
12
13
14
16
17
18
19
20
21
15
17
7.30
1.00
3.50
Item Description
1Adjusting Screw
2Jam Nut
3Spring Housing
4Spring Guide
5Spring
6Cap Screw
7Power Chamber
8O-Ring*
9Body
10 Seat
11 O-Ring*
Item Description
12 Nut
13 Lockwasher
14 Diaphragm Washer
15 Diaphragm*
16 Diaphragm Washer
17 O-Ring*
18 Stem
19 Retainer
20 Rubber Disc*
21 Screw
*Included in Repair Kit
Viton™ is a trademark of The Chemours Company FC, LLC

11
ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
Inlet
B
A
Dimensions
SIZE DIMENSIONS WEIGHT
A B
in. in mm in mm lbs. kgs.
¼ 2 ⁄
68 1
⁄
43 1.7 0.77
⅜ 2 ⁄
68 1
⁄
43 1.7 0.77
½
3 76 2 51 1.7 0.77
¾ 3 ⁄
84 2
⁄
59 1.7 0.77
Model LF60-1
Y-Pattern Strainer
Size:
¼
" –
¾
" 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 LFM513-14

12
ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
Lead Free Ball Valve
Specifications
Standard Material: Copper Silicon Alloy Body and Adaptor
Chrome Plated Ball
Optional Material: Stainless Steel Housing, Body and Adaptor
Stainless Steel Ball
Pressure Rating: 600psi (41 bar) Non Shock
Temp Rating: -40°F - 400°F
C
H
L
Model BV
Ball Valve
Size:
¼
" – 1" NPT
Model BV Ball Valves 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.
¼ 1 ⁄
46 3
⁄
87 1
¾ 45 0.4 0.2
⅜ 1 ⁄
46 3
⁄
87 1
¾ 45 0.4 0.2
½ 1 ⁄
46 3
⁄
87 1
⁄
50 0.4 0.2
¾ 2 ¼ 57 4101 2 ⁄
59 0.8 0.3
*The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
ACV Standard Components - Series LFM513-14

13
ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
Body Material: Lead Free Brass (standard)
Stainless Steel (optional)
Pressure Rating: 400psi (27.6 bar)
Filter Element: Monel
Screen Mesh: 40 Mesh (standard)
Specifications
B
A
Valve inlet with Filter installed
A B
Male Pipe Thread Female Pipe Thread
in. in.
¼ ⅛
⅜ ¼
½ ⅜
Model LF60
Flo-Clean Strainer
Size:
¼
" –
¾
" 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 surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
Model LF60
ACV Options and Accessories - Series LFM513-14

Model LF51-1
14
ES-ACV-LFM513-14 2115 © 2021 Watts
LEAD FREE*
Specifications
Model 51-1
Dual Limit Switch
Size: 2" - 8" NPT
The Model 51-1 Dual Limit Switch provides visual indication of
valve position, as well as remote electrical indication of "valve
open" and "valve closed". The single pole double throw Micro-
Switches can be connected to open or close an electrical circuit
when the valve opens or closes.
The adjustable collars are normally set to contact the trip arms to
indicate "valve open" and "valve closed". The collars can be posi-
tioned on the stem by loosening the set-screws to actuate the
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
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.
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
10
11
12
14
6
7
9
13
15
8
5
4
3
2
1
Viton™ is a trademark of The Chemours Company FC, LLC
ACV Options and Accessories - Series LFM513-14
Parts List
Single Pole Double Throw Switch
Single Pole Double Throw Switch
Common Lug
Normally Open
Normally Closed

Globe
Angle
Size (in) 2 2½ 3 4 6 8 10 12 14 16 20 24
A (in) 20 22 22 24 32 34 38 44 48 52 56 56
B (in) 20 22 22 25 36 38 40 44 48 50 50 50
Size (in) 2 2½ 3 4 6 8 10 12 14 16
C (in) 20 22 22 24 32 34 38 44 48 52
D (in) 20 22 22 25 36 38 40 44 48 50
1. Prior to installation, flush line to remove debris.
2. Install valve so the flow arrow matches flow through the line, and gauges to monitor valve inlet and outlet pressures. Install isolation valves
upstream and downstream of the main valve.
3. Provide adequate clearance for valve servicing and maintenance. Refer to valve servicing dimensions on next page. Avoid installing valves
6" and larger in the vertical position (main valve stem horizontal). Automatic Control Valves (ACVs) are designed for horizontal in-line instal-
lation, with the cover facing up (main valve stem vertical). Slow operation or premature stem and guide wear may occur if valve is not
installed according to factory recommendations. Consult factory for detailed engineering review prior to ordering if valve is to be installed
other than horizontally in-line.
4. If valve is equipped with a pilot control system, extra precautions should be 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 switch contacts to the proper relay connections, using safe, standard electrical practices. Adjust the limit switch collar to the
approximate make/break contact position.
7. Field install remote operating pressure line, minimum recommended size ½”, to the downstream side of the system check valve.
8. After installation, vent entrapped air from valve cover and pilot system by following instructions in the Commissioning Deep Well Pump
Control section of the next page.
15
The following tables detail the recommended minimum valve servicing dimensions.
Valve Servicing Dimensions
Start-up of an automatic control valve requires that proper procedures be followed. Time must be allowed for the valve to react to
adjustments and the system to stabilize. The objective is to bring the valve into service in a controlled manner to protect the system
from damaging over-pressure.
Installation
A
B
C
FLOW
FLOW
FLOW
D
FLOW
ES-ACV-LFM513-14 2115 © 2021 Watts
Installation, Operation and Maintenance - Series LFM513-14

Commissioning Deep Well Pump Control
STEP 1
NOTE: System needs to be filled, pressurized, and ready for flow.
Pre-set pilots as noted:
Opening and Closing Speed – Prior to pump start, actuate manual operator on solenoid to enable diaphragm assembly to stroke
open and closed. Observing the limit switch stem indicator, monitor rate of opening and closing speed. Adjust accordingly per applica-
tion requirements.
Pressure Relief Pilot – Screw pilot adjusting screw clockwise completely.
Note: Cycle diaphragm multiple times to confirm rate 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 (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
Closing Speed Flow Adjustment (located on the lower chamber):
While free flow goes into the upper chamber, the closing speed
flow control restricts flow out of the lower chamber of the main
valve.
If valve closing is too slow, turn the adjustment screw OUT, coun-
terclockwise, increasing the rate of closing.
Figure 2
Flow Control
Counterclockwise to INCREASE
the rate of closing
Clockwise to DECREASE
rate of closing
2A 2B
Manual
Operation
Normal
Operation
16
Figure 1
4-Way Solenoid
ES-ACV-LFM513-14 2115 © 2021 Watts
Installation, Operation and Maintenance - Series LFM513-14

Setting the Relief Control
STEP 6
While pump is operating at normal pressure conditions, slowly
turn relief pilot adjusting screw counterclockwise (See Figure 3B).
STEP 7
When main valve begins to open screw pilot adjusting screw
clockwise until valve closes, then continue to turn clockwise an
additional ½ turn to set relief control (See Figure 3A).
STEP 8
When pump demand is satisfied, pump will continue to operate
as the main valve opens. To open main valve, de-energize the
solenoid, checking that the main valve opens.
STEP 9
Opening Speed Needle Valve Adjustment (located on the upper
chamber): 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 will stop. Adjust limit
switch collar to final position to ensure positive actuation of limit
switch electrical contact, if necessary, by sliding up/down to loca-
tion (See Figure 4).
17
ES-ACV-LFM513-14 2115
Figure 4
Limit Switch in Open Position
© 2021 Watts
Installation, Operation and Maintenance - Series LFM513-14
Figure 3
PV20C — Pressure Relief Control
Clockwise to increase inlet
pressure
3A 3B
Counterclockwise to decrease
inlet pressure

18
To ensure peak performance and longevity of your automatic con-
trol valve, Watts/Ames recommends following the below
standard maintenance schedule.
• Monthly Maintenance
– Visual inspection of valve(s) for leaks
– Inspect for proper operation(s); exercise valve.
• Quarterly Maintenance
– Conduct monthly inspection.
– Validate/Re-establish necessary setpoints of controls/pilots.
• Annual Maintenance
– Conduct monthly & quarterly inspections.
– Inspect & clean all strainers.
– Inspect valve coating, touch up as required.
• 3-5 Year Maintenance
– Conduct monthly, quarterly, & annual maintenance.
– Inspect & replace valve elastomers (diaphragm, O-rings,
valve/pilot seats)
– Re-establish necessary set points of controls/pilots.
Automatic Control Valve Maintenance Schedule
Troubleshooting Guide
Warning: The valve cannot be serviced under pressure.
Upstream and downstream Isolation Valves must be installed
to protect system piping. Accurate diagnosis and trouble-
shooting requires the valve to open fully, and may subject
downstream piping and equipment to high pressure and/or
flow rates. The downstream Isolation Valve should be kept
closed while diagnosing the valve.
Extreme caution should be used while performing the
troubleshooting techniques listed below.
WARNING
!
Recommended tools for diagnosis: (3) PRESSURE GAUGES,
installed to monitor the inlet pressure, outlet pressure, and cover
chamber pressure. If included, a POSITION INDICATOR should
be installed to visually assess the position of the disc &
diaphragm assembly.
Test 1: Diaphragm Seal Test
1. Close upstream & downstream isolation valves. Close pilot
isolation valves or remove pilot control tubing to isolate valve
cover from incoming fluid & pressure. Remove uppermost
cover plug, test cock, or limit switch.
2. With the valve cover chamber vented to atmosphere,
partially open the upstream isolation valve, allowing incoming
pressure to lift the disc & diaphragm assembly. A volume of
water will be displaced from the cover chamber as the valve
opens; consult 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 isolation valve to allow pressure on to the valve
cover. Allow valve to fully close.
3. Monitor downstream pressure gauge; reading should hold
steady below incoming pressure. If pressure on downstream
side rises to match upstream pressure, leakage is occurring
through the seat of the main valve. Disassemble valve, inspect
and repair/replace any required parts.
a. If gauge pressure rises to match outlet pressure (down-
stream of closed isolation valve) yet remains below inlet
pressure, the isolation valve may be leaking as opposed to
main valve seat.
Test 3: Freedom of Movement/Valve
Travel Test
1. Close upstream and downstream isolation valves. Install valve
position indicator.
2. Partially open upstream isolation valve and allow cover to fill
with fluid & pressure, closing the valve fully. Mark the position
indicator’s full closed position.
3. Isolate cover chamber from receiving fluid and pressure by
closing isolation valves or removing control tubing.
4. Carefully vent cover chamber to atmosphere by opening test
cock or removing a cover plug. Observe the valve position
indicator as the valve travels to the full-open position. The disc
& diaphragm assembly should move freely from fully closed to
fully open position without binding or “grabbing” at any point
during its movement.
a. The disc & diaphragm assembly may momentarily “hesi-
tate” while travelling from fully closed to fully open position
– this is a normal characteristic of diaphragm operated
control valves, and does not indicate mechanical binding or
improper valve operation.
b. A continuous discharge of water from the cover chamber
after venting to atmosphere indicates leakage past the
diaphragm.
5. If necessary, disassemble valve and inspect/repair disc & dia-
phragm assembly.
ES-ACV-LFM513-14 2115 © 2021 Watts
Installation, Operation and Maintenance - Series LFM513-14

Issue Possible Cause Corrective Action Notes
Main Valve will not
open
Closed isolation valves in pilot system. Check isolation valves, ensure
open.
Insufficient supply pressure. Check upstream pressure. Depending on water
source, supply pressure
may not be controlled by
valve operator.
Main valve stem assembly corroded/
damaged
Inspect stem assembly, clean/
replace if necessary.
Blockage in pilot system. Inspect & clean any installed
pilot system strainers, check
orifice/speed controls for
blockages.
Improperly configured opening speed
control.
Adjust opening speed control
to verify functionality, adjust as
required.
Standard setting for
opening speed control is
1½- 2½turns open from
full closed position. Can be
adjusted in field.
Main Valve will not
close
Closed isolation valves in pilot system Check isolation 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 required.
Improperly configured closing speed
control.
Adjust closing speed control
to verify functionality, adjust as
required.
Standard setting for
closing speed control is
1½- 2½turns open from
full closed position. Can
be adjusted in field.
Solenoid will not
actuate
Possible Cause: Low or no voltage Check voltage at the solenoid
connection, insuring that it has
the minimum of 85% of the
coils rated voltage.
Should be performed by
licensed electrician
Manual operated is engaged Turn manual operator counter-
clockwise to disengage
19
Troubleshooting Guide
ES-ACV-LFM513-14 2115 © 2021 Watts
Installation, Operation and Maintenance - Series LFM513-14

Size (in) 3 4 6 8 10 12 16 20 & 24
P/N 0677-21 0677-23 0677-24 0677-25 0677-26 0677-27 0677-28 0677-30
20
Valve Disassembly Instructions
Before undertaking valve disassembly, it is recommended to gather the following tools to aid you during the process:
• Small & large adjustable wrenches
• Screwdriver set
• Machinist fine metal file
• Fine wire brush
• Bench vise
• Basic valve IO&M manual
• Hammer & dull cold chisel
• Heavy-duty ratchet & socket set
• Hexagonal wrench set
• 320 grit/fine Emery cloth
• Appropriate technical bulletins for
valve start-up procedures.
VALVE COVER
BRASS BAR STOCK
(ANGLE UPWARD)
HAMMER
1. Isolate the valve from line pressure and depressurize it to ensure safe working conditions. Disconnect any electrical
connections if so equipped.
2. Carefully remove Position Indicator or Limit Switches if equipped. Remove all tubing, fittings, and Control Pilots
necessary to easily access and remove the cover. Remove cover nuts and washers.
3. Remove the cover. If cover is not free to be removed, loosen it by tapping upward along its outside edge with a dull cold chisel, pic-
tured above.
a. Large valves may require the installation of lifting “eye” bolts in order to facilitate cover removal; installation ports are provided on
the cover for this purpose.
4. Remove the Disc and Diaphragm Assembly from the valve body by lifting straight up.
a. Large diameter valves may require a lifting “eye” bolt to be installed in the valve stem accessory threads located on the very
top of the valve stem.
5. Before removing Stem 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 cloth to remove any mineral deposits and inspect for excessive wear. Remove any mineral build-up from
other components with wire brush or by using a Mineral Dissolving Solution. Inspect parts for wear and replace if necessary.
7. Inspect valve seat. If seat is not damaged, removal is not necessary. If it is damaged please contact factory for instructions.
8. Replace Seat Disc, Diaphragm and Spacer Washers provided in Main Valve repair kit (refer to Table 2 or 3 for correct repair kit part
number). Re-assemble in the reverse order of disassembly.
9. Re-Install Disc and Diaphragm Assembly in the valve, taking care not to damage the lower guide area in the center of the valve
seat.
10. Re-install Cover Spring. Replace Valve Cover and tighten Cover Nuts in a crossing pattern to ensure even distribution. Test the Disc
and Diaphragm Assembly for smooth travel by following the Freedom of Movement Test procedure in previous section.
11. Test the integrity of the Seat Seal by following the Seat Seal Test procedure in previous section.
Size (in) 2 2½ 3 4 6 8 10 12 14 16
P/N 0677-21 0677-22 0677-23 0677-24 0677-25 0677-26 Consult Factory 0677-28 0677-29 0677-30
Table 2: Full Port Valve (M500/M1500) Repair Kits
Table 3: Reduced Port Valve (M6500 / M61500) Repair Kits
ES-ACV-LFM513-14 2115 © 2021 Watts
Installation, Operation and Maintenance - Series LFM513-14