1
X
Y/FC
2
3A
3B
P/L
X
CLOSES VALVE
OPENS VALVE
FLOW
ON-OFF FLOAT CONTROL VALVE
(4” a n d Sm a l l e r )
11/08
Cl a s s i C se r i e s
Schematics
Opens when float reaches low level stop•
Closes when float reaches high level stop•
Low and High Level stop collars are adjustable•
F110-14 (Globe)
F1110-14 (Angle)
Standard Components
1 - Main Valve (Single Chamber)
2 - On-Off Float Control
3A - High Level Adjustment Stop
3B - Low Level Adjustment Stop
Options & Accessories
X - Isolation Cocks ○
FC - Flo-Clean Strainer ○
Y - Y-Strainer (Replaces Flo-Clean) ○
AOS – Adjustable Opening Speed ○
P - Position Indicator ○
L - Limit Switch ○
(3)
(2)
(1)
(3)
(1)
Standard 3” & Smaller
(2)
Standard 4” & Larger
(3)
Optional All Sizes
(2)
(3)
Operations
The Watts ACV On-Off Float Control Valve is designed to open fully or close drip-tight as commanded by
the Float Control Pilot. The Float Pilot may be either valve or remote mounted. The valve closes drip tight
when water level reaches the adjustable high-level setpoint, and opens fully when water level is below the
adjustable low-level setpoint, allowing a calculated “draw-down” of water level to increase tank circulation.
The On-Off Float Pilot commands the routing of uid and pressure into and out of the cover chamber of the
main valve. When water level reaches the adjustable high-level setpoint, the Float Pilot connects the cover
chamber of the valve to upstream pressure, closing the valve drip tight. The valve remains closed as water
level decreases. When water level reaches the adjustable low-level setpoint, the Float Pilot connects the
cover chamber of the valve to atmosphere (wet drain), opening the valve fully. High and low levels are sepa-
rately adjustable by positioning stop collars on the oat rod(s) at desired opening and closing setpoints.
If desired, the on-off action of the valve can be “reversed” by modifying the hydraulic connections of the
On-Off Float Pilot.
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
Cl a S S i C Se r i e S
L
M
D
A
B
C
E
F
G
H
I
J
K
F110-14 (Globe)
F1110-14 (Angle)
Materials
Globe
Angle
Body & Cover: Ductile Iron ASTM A536
Coating: NSF Listed Fusion
Bonded Epoxy Lined
and Coated
Trim: 316 Stainless Steel (1-1/4” – 8”)
ASTM B62 Bronze (10”)
(Stainless Steel Optional)
Elastomers: Buna-N (standard)
EPDM (optional)
Viton (optional)
Stem, Nut & Stainless Steel
Spring:
Operating Pressure Operating Temperature Pilot System Tubing & Fittings
Threaded = 400 psi
150 Flanged = 250 psi
300 Flanged = 400 psi
Buna-N: 160°F Maximum
EPDM: 300°F Maximum
Viton: 250°F Maximum
Float Control Copper / Brass (Standard)
Brass (Standard) Stainless Steel (Optional)
Float Ball
Polyethylene (6” dia.)
Float Rods
(2) 12” Rods (Standard)
Dimensions
A B C D E F G H I J K L M
VALVE
GLOBE
SIZE
THRD.
1-1/4 7-1/4 - - 3-1/2 3-1/4 - - 1-7/8 - - 1/4 1/2 1/8 15
1-1/2 7-1/4 8-1/2 9 3-1/2 3-1/4 4 - 1-7/8 4 - 1/4 1/2 1/8 15
2 9-3/8 9-3/8 10 4-15/16 4 4 4-1/4 4 4 4-1/4 1/2 1/2 1/4 35
2-1/2 11 11 11-5/8 7 5-1/2 5-1/2 5-13/16 4 4 4-5/16 1/2 1/2 3/8 65
3 10-1/2 12 13-1/4 7 5-1/4 5-3/4 6-1/8 5-1/4 5-3/4 6-1/8 1/2 1/2 3/8 95
4 - 15 15-5/8 8-5/8 - 6-3/4 7-1/8 - 6-3/4 7-1/8 1/2 1/2 3/8 190
6 - 20 21 11-3/4 - 8-1/2 8-7/8 - 8-1/2 8-7/8 1/2 1/2 1/2 320
8 - 25-3/8 26-3/8 15-3/4 - 11 11-1/2 - 11 11-1/2 1/2 1 1/2 650
10 - 29-3/4 31-1/8 18-3/4 - 14-7/8 15-5/8 - 14-7/8 15-5/8 1 1 1 940
GLOBE
150#
GLOBE
300#
COVER TO
CENTER
ANGLE
THRD.
ANGLE
150#
ANGLE
300#
ANGLE
THRD.
ANGLE
150#
ANGLE
300#
PORT
SIZE
PORT
SIZE
PORT
SIZE
SHIPPING
WEIGHTS*
For larger sizes consult factory
Valve Cover Chamber Capacity
Valve Size (in) 1-1/4 1-1/2 2 2-1/2 3 4 6 8 10
.oz. 4 4 4 10 10 22 70
U.S. Gal - - - - - - -
- -
1-1/4 2-1/2
Valve Travel
Valve Size (in) 1-1/4 1-1/2 2 2-1/2 3 4 6 8 10
Travel (in) 3/8 3/8 1/2 5/8 3/4 1 1-1/2 2 2-1/2
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
Cl a S S i C Se r i e S
CAVITATION ZONE
INLET PRESSURE - PSI
OUTLET PRESSURE - PSI
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0 10 20 40 50 60 70 80 90
130 14012011 0100
30
CAVITATION CHART
1
1/4
1
1/221/2
2
3
4
6
8
10
1
1/4
2
1/2
1
1/2
2
3
4
6
8
10
10000020000100005000100050010050105
1
1
5
10
50
100
Pressure Difference psi
Headloss
F110-14 (Globe)
F1110-14 (Angle)
Angle
Globe
Cavitation Chart
After selecting the valve size, locate inlet and outlet pressures on this chart. If the intersection point falls
in the shaded area, cavitation can occur. Operation of valves continually in the cavitation zone should be
avoided. Consult Watts ACV for alternatives.
Flow Rate - Gallons per minute (Water)
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
Cl a S S i C Se r i e S
3
4
5
6
7
8
9
11
12
13
14
15
16
17
1
2
10
Cross-Sectional Detail
Main Valve
F110-14 (Globe)
F1110-14 (Angle)
ITEM DESCRIPTION MATERIAL
1 Cover ASTM A536 65-45-12 Epoxy Coated Ductile Iron
2 Cover Bearing SAE 841 Bronze
3 Shaft / Stem ASTM A276 304 Stainless Steel
4 Stud ASTM A570 Gr.33 Zinc Plated Steel
5 Cover Nut ASTM A570 Gr.33 Zinc Plated Steel
6 Diaphragm* Buna-N (Nitrile)
7 Body ASTM A536 65-45-12 Epoxy Coated Ductile Iron
8 Quad Seal* Buna-N (Nitrile)
9 Seat Ring ASTM A743 CF8M (316) Stainless Steel (8” and Smaller)
ASTM B62 Bronze (10” and Larger)
10 Spring ASTM A276 302 Stainless Steel
11 Stem Nut ASTM A276 304 Stainless Steel
12 Diaphragm Washer ASTM A536 65-45-12 Epoxy Coated Ductile Iron
13 Spacer ASTM A276 304 Stainless Steel
14
15 O-Ring* Buna-N (Nitrile)
16 Quad Seal Plate ASTM A743 CF8M (316) Stainless Steel (8” and Smaller)
17 Seat Gasket* Buna-N (Nitrile)
Quad Seal Retainer
ASTM A536 65-45-12 Epoxy Coated Ductile Iron
ASTM B62 Bronze (10” and Larger)
* Contained in Main Valve Repair Kit
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
F110-14 (Globe)
Cl a S S i C Se r i e S
Installations
Prior to installation, flush line to remove debris.•
Install valve horizontally “in line” (cover facing UP), so flow arrow matches flow through the line. Avoid installing •
valves 6” and larger vertically. Consult factory prior to ordering if installation is other than described.
Install inlet and outlet isolation valves. NOTE: When using butterfly valves, insure disc does not contact control •
valve. Damage or improper valve seating may occur.
Provide adequate clearance for valve servicing and maintenance.•
Install pressure gauge to monitor valve inlet pressure.•
Provide adequate drain for cover chamber discharge. Consult “Valve Cover Capacity” chart on appropriate main •
valve Engineering Bulletin.
If On-Off Float Pilot is remotely mounted it should be field connected with 3/8” minimum copper tubing in •
accordance with factory piping schematic.
Float Pilot, Rods, and Ball should be mounted in a field installed “stilling well” for protection against surface •
turbulence and interference.
Additional 12” Float Rods available. Consult Factory.•
Start-Up
Proper Automatic Control Valve start‑up requires bringing the valve into service in a controlled manner. All adjustments
to control pilots and speed controls should be made slowly, allowing the valve to respond and the system to stabilize.
NOTE: Control Valves should be set‑up in a dynamic (owing) condition for proper start‑up. Provisions for ow
must be made to insure proper settings.
F1110-14 (Angle)
If Float Control is remote mounted, eld installed control lines should be 3/8” minimum copper tubing for •
distances no greater than 10 feet. For greater distances use 1/2” minimum copper tubing or pipe.
Remote mount – without Accelerator (4” and smaller): Port 1 = Supply Pressure•
Port C = Valve Cover
Port 2 = Atmosphere
Remote Mount – with Accelerator (6” and larger): Port 1 = Atmosphere •
Port C = Accelerator Cover
Port 2 = Supply
Close upstream and downstream valves to isolate the valve from line pressure. Open all Isolation Ball Valves, 1.
if so equipped. If valve is tted with adjustable speed controls, turn needle(s) in (clockwise) until seated, and
return out (counterclockwise) 1‑1/2 to 2‑1/2 turns. These are approximate settings, and should be ne tuned to
suit system requirements after level adjustments have been made.
Slowly open upstream isolation valve to allow controlled lling of the valve. Vent entrapped air by carefully 2.
loosening control tubing or pipe plug at the highest point possible. If valve is equipped with a Position Indicator,
open Air Bleed Petcock to vent air. Water will be milky in appearance and will begin to clear as air is vented.
Re‑tighten when water vents clearly.
Setting Float Control:3. Install desired number of Float Rods and Low and High Level Stop Collars (less Float).
Manually position Float Control to the center point in its travel and balance by positioning Counterweight “in” or
“out” until Float Control holds in position. Proper balance is achieved when Float Control moves to the “down/
on” or “up/off” position with minimal force or drag. The position of Counterweight on the Counterweight Rod will
vary based upon the number and material of Float Rods being used. Install Float.
Position Low and High Level Stop Collars on Float Rods to match desired valve opening and closing levels. 4.
Slowly open downstream isolation valve.
Fine tune Speed Controls (if equipped) to suit system requirements. Adjust Closing Speed Control clockwise 5.
for slower closure and counterclockwise for faster closure. Adjust Opening Speed Control clockwise for slower
opening and counterclockwise for faster opening.
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
F110-14 (Globe)
Cl a S S i C Se r i e S
Specications
The On-Off Float Control Valve shall be a pilot operated diaphragm valve designed to open fully or close
drip-tight as commanded by the Float Control Pilot. The Float Pilot may be either valve or remote mounted.
The valve shall close drip tight when water level reaches the adjustable high-level setpoint, and open fully
when water level is below the adjustable low-level setpoint, allowing a calculated “draw-down” of water level
to increase tank circulation.
The main valve shall be a hydraulically operated, single diaphragm actuated, globe or angle pattern valve.
Y-pattern valves shall not be permitted. The valve shall contain a disc and diaphragm assembly that forms
a sealed chamber below the valve cover, separating operating pressure from line pressure. The diaphragm
shall be constructed of nylon reinforced Buna-N, and shall not seal directly against the valve seat and shall
be fully supported by the valve body and cover. Rolling diaphragm construction will not be allowed and there
shall be no pistons operating the main valve or any pilot controls.
The main valve body and cover shall be Ductile Iron ASTM A536, and all internal cast components shall be
Ductile Iron or CF8M (316) Stainless Steel. All Ductile Iron components, including the body and cover, shall
be lined and coated with an NSF 61 Certied Epoxy Coating applied by the electrostatic heat fusion process.
All main valve throttling components (valve seat and disc guide) shall be Stainless Steel. The valve body
and cover must be machined with a 360-degree locating lip to assure proper alignment.
F1110-14 (Angle)
The disc and diaphragm assembly shall contain a Buna-N synthetic rubber “Quad Seal” that is securely
retained on 3-1/2 sides by a disc retainer and disc guide. Diaphragm assemblies utilizing bolts or cap
screws for component retention will not be permitted.
The exposed portion of the Quad Seal shall contact the valve seat and seal drip-tight. The disc and diaphragm
assembly must be guided by two separate bearings, one installed in the valve cover and one concentrically
located within the valve seat, to avoid deection and assure positive disc-to-seat contact. Center guided
valves will not be permitted. All necessary repairs shall be made from the top of the valve while the body
remains in line.
Pilot control systems for valves 3” and smaller shall contain a Flow Clean Strainer, On-Off Float Pilot, (2)
12” Float Rods and a Float Ball. Pilot control systems for 4” valves shall contain an On-Off Float Pilot, (2)
12” Float Rods, Float Ball, an external Y-Strainer and Isolation Ball Valves on all body connections. All pilot
control systems shall utilize copper tubing and brass ttings regardless of valve size.
The valve shall be Watts ACV Model F110-14 (Globe) or F1110-14 (Angle) On-Off Float Control Valve.
Other Watts ACV Float Control Valves
F110-10 / F1110-10 Modulating Float Control Valve
F110-13 / F1110-13 Modulating Float Control Valve with Pressure Sustaining Feature
F110-AS / F1110-AS Modulating Float Control Valve with Solenoid (On-Off) Feature
F110-18 / F1110-18 On-Off Float Control Valve with Pressure Sustaining Feature
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
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