Box with adjustable time delay, pre-wired Solenoid Valve, Manual Reset with Pressure Gauge, Position Indicator and FS99 Flow Sensor (field installed). * Junction Box Ships Valve Mounted LFF113-RFP — InstallationTechnical Bulletin - LFF113RFP NOTICE If the LFF113RFP unit is installed in any orientation other than horizontal (Cover Up)
The valve mounted JB113 Junction Box is a lockable NEMA 4 enclosure equipped with an adjustable time delay, electrical relay and terminal strip.
Typical Installation psi AVOID FREEZING R 100 140 160 190 200 80 60 40 20 Operation The Watts Flood Protection Shutdown Valve system prevents cata-strophic property damage that can occur due to Relief Valve dis
Technical Bulletin
TB-ACV-LFF113RFP
LEAD FREE*
LFF113RFP
Flood Protection Shut Down Valve
· Installed upstream of Reduced Pressure Zone Backflow Preventer.
· Normally Open Valve - Closes when continuous discharge from RPZ Relief Valve is sensed or by engaging Solenoid By-Pass.
· Valve must be manually reset. Pressure gauge (provided) indicates valve reset for automatic service.
· Position Indicator provides local visual indication of valve closure.
· Reverse Flow Main Valve closes in the event of diaphragm failure for fail-safe operation
· Specially coated Valve Stem for added protection. · Heavy duty Cover Spring. · JB113 provided Valve mounted. FS99 field installed.
Standard Components
1 - Main Valve (Single Chamber) 2 - Check Valve 3 - Adjustable Closing Speed 4 - 2-Way Solenoid 5 - Pressure Gauge 6 - Manual Reset Ball Valve 7 - JB113 Junction Box 8 - FS99 Flow Sensor P - Position Indicator SB - Solenoid By-Pass X - Isolation Cocks FC - Flow Clean Strainer
Options and Accessories
{{ -LS (Single NEMA 4 Limit Switch) {{ -LS2 (Dual NEMA 4 Limit Switch)
3
4
SB
2
X
FC
Materials
P X
7
JB113
5
6
8
FS99
To Floor Drain
1
FLOW CLOSES VALVE OPENS VALVE
Body & Cover:
Ductile Iron ASTM A536
Coating:
NSF Listed Fusion Bonded Epoxy Lined and Coated
Trim:
316 Stainless Steel
Elastomers:
Buna-N (standard) EPDM Viton
Stem, Nut & Spring Stainless Steel
NOTICE
The information contained herein is not intended to replace the full product installation and safety information available or the experience 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.
*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.
Viton® is a registered trademark of DuPont Dow Elastomers.
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.
LFF113-RFP -- InstaTlleacthionnical Bulletin - LFF113RFP
Typical Installation
80 100 60
40
140
R 160
20
psi 190
200
AVOID FREEZING
* Junction Box Ships Valve Mounted
Operation
The Watts Flood Protection Shutdown Valve system prevents catastrophic property damage that can occur due to Relief Valve discharge and/or a blocked or overwhelmed floor drain during normal relief valve operation. Typical conditions which can cause continuous relief valve discharge are:
· Fouled First Check Seat due to dirt, debris or rocks · Failed First Check Spring · Clogged or blocked Relief Valve Sensing Line · Relief Valve Diaphragm failure
is sensed by the FS99 Flow Sensor, energizing the Solenoid Pilot. The valve is equipped with a Solenoid By-Pass valve (normally closed) which manually closes the Main Valve when engaged. The valve mounted JB113 Junction Box is equipped with an adjustable time delay to avoid valve closure due to intermittent or nuisance relief valve discharge. The Position Indicator provides local, visual indication of valve closure and is useful during valve start-up and troubleshooting. The valve remains closed and cannot re-open if flow stops or electrical service is interrupted, and must be manually reset after the RPZ is diagnosed and/or repaired.
The valve comes complete with the valve mounted JB113 Junction
The Watts LFF113RFP Flood Protection Shutdown Valve is a normally Box with adjustable time delay, pre-wired Solenoid Valve, Manual
open valve designed to be installed upstream of a Reduced Pressure Reset with Pressure Gauge, Position Indicator and FS99 Flow Sensor
Zone (RPZ) Backflow Prevention device. It is normally open and
(field installed).
closes when continuous relief valve discharge through the drain pipe
NOTICE
If the LFF113RFP unit is installed in any orientation other than horizontal (Cover Up) or extreme space constraints exist, consult customer service prior to ordering.
LFF113-RFP -- DimeTnescihoniscal Bulletin - LFF113RFP
Globe
Angle
L
D
M
K HI J
Operating Pressure
Threaded = 400 psi 150 Flanged = 250 psi 300 Flanged = 400 psi
A B C
Operating Temperature
Buna-N: 160°F Maximum EPDM: 300°F Maximum Viton: 250°F Maximum
Pilot System
Solenoid Brass (NEMA 4 General Purpose 110-VAC)
E F G
Tubing & Fittings
Copper / Brass (Standard) Stainless Steel (Optional)
Dimensions
Valve Size Globe Thread Globe 150# Globe 300# Cover To Angle Thread Angle 150# Center
A
B
C
D
E
F
in.
in. mm in. mm in. mm in. mm in. mm in. mm
11/4 71/4 184
31/2 89 31/4 83
11/2 71/4 184 81/2 216
31/2 89 31/4 83 4 102
2
93/8 238 93/8 238 10 254 415/16 125 4 102 4 102
21/2 11 279 11 279
7 178 51/2 140 51/2 140
3 101/2 267 12 305 131/4 337 7 178 51/4 133 53/4 146
4
15 381 155/8 397 85/8 219
63/4 171
6
20 508 21 533 113/4 298
81/2 216
8
253/8 645 263/8 670 153/4 400
11 279
Angle 300# Angle Thread
G in. mm
41/4 108 513/16 148 61/8 156 71/8 181 87/8 225 111/2 292
H in. mm 17/8 48 17/8 48 4 102 4 102 51/4 133
Angle 150#
I in. mm
4 102 4 102 4 102 53/4 146 63/4 171 81/2 216 11 279
Angle 300# Port Size Port Size Port Size Shipping NPT NPT NPT Weights*
J
K
L
M
in. mm in.
in.
in. lbs. kgs.
1/4
1/2
1/8 15 7
1/4
1/2
1/8 15 7
41/4 108 1/2
1/2
1/4 35 16
45/16 110 1/2
1/2
3/8 65 30
61/8 156 1/2
1/2
3/8 95 43
71/8 181 1/2
1/2
3/8 190 86
87/8 225 1/2
1/2
1/2 320 145
111/2 292 1/2
1
1/2 650 295
Valve Cover Chamber Capacity
Valve Size - Inches
fl.oz. U.S. Gal
1 1/4
1 1/2
2
2 1/2
3
4
6
8
4
4
4
10
10
22
70
1 1/4
Valve Travel
Valve Size - Inches
Travel - Inches
1 1/4
1 1/2
2
2 1/2
3
4
6
8
3/8
3/8
1/2
5/8
3/4
1
1 1/2
2
Technical Bulletin - LFF113RFP
Flow Data - ACV F100 (Globe) / F1100 (Angle)
Suggested
Valve Size - Inches
Maximum Continuous Flow Rate Gpm (Water)
Maximum Intermittent Flow Rate Gpm (Water)
Minimum Flow Rate Gpm (Water)
Factor GPM (Globe)
Factor GPM (Angle)
1 1/4
1 1/2
2
93
125
208
115
158
260
3
5
6
29
34
55
39
53
66
CV
· 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 C Factor of a value is the flow rate in US GPM at 60°F that will
v
cause a 1psi drop in pressure. · C factor can be used in the following equations to determine Flow
v
(Q) and Pressure Drop (P):
Q (Flow) = C P v
P (Pressure Drop) = (Q/C )2 v
2 1/2
3
4
6
8
300
460
800
1800
3100
370
570
1000
2300
3900
9
15
16
17
25
75
125
220
460
775
99
170
280
650
1100
· The C factors stated are based upon a fully open valve. v
· 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.
Headloss
2-1/2
Angle Globe
16
12 14
3
2
12 10 14
10 8
6 6
8
44
211--11//2411--11//24
2-1/2
16
3
100 80 60
40 30
20
Pressure Drop (p.s.i.)
10 8 6
4 3
2
2
4 6 8 10
20
40 60 80 100
200
500
1000
2000
5000 10000 20000
Flow Rate - Gallons per minute (Water)
100000
Maximum continuous flow based on velocity of 20 ft. per second. Maximum intermittent flow based on velocity of 25 ft. per second. The Cv Factor of a value is the flow rate in US GPM at 60° F that will cause a 1 psi drop in pressure. The factors stated are based upon a fully open valve. Cv factor 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
LFF113-RFP -- MainTVecahlvneical Bulletin - LFF113RFP
F100 Main Valve
6 1
2 7
3
4
8
9
8
5
10
11
Item
Description
Material
12
1
Pipe Plug
Lead Free Brass
2
Cover
ASTM A536 65-45-12 Epoxy Coated Ductile Iron
13
3
Cover Bearing
ASTM A276 304 Stainless Steel
4 Stud with Cover Nut and Washer
ASTM A570 Gr.33 Zinc Plated Steel
5
Body
ASTM A536 65-45-12 Epoxy Coated Ductile Iron
14
6
Spring
ASTM A276 302 Stainless Steel
7
Stem Nut
ASTM A276 304 Stainless Steel
8
Diaphragm Washer
ASTM A536 65-45-12 Epoxy Coated Ductile Iron
9
Diaphragm*
Buna-N (Nitrile)
10
Spacer
ASTM A276 304 Stainless Steel
11
Quad Seal Retainer
ASTM A536 65-45-12 Epoxy Coated Ductile Iron
12
Quad Seal*
Buna-N (Nitrile)
13
O-Ring*
Buna-N (Nitrile)
14
Quad Seal Plate
ASTM A743 CF8M (316) Stainless Steel
15
Shaft / Stem
ASTM A276 304 Stainless Steel - Xylan Coated
15
16
Seat Ring
ASTM A743 CF8M (316) Stainless Steel
17
Seat Gasket*
Buna-N (Nitrile)
* Contained in Main Valve Repair Kit
16 17
Junction Box
Technical Bulletin - LFF113RFP
Relay with Red LED Indicator
6.00
Power
15
UP
10
20
5
25
0
30
SEC
6
5
4
3
2
1
8.00
6
5
4
3
2
1
L1 N
123 4 56
Incoming
Flow
Solenoid Remote
Power
Sensor
Valve
Trip
120V/1PH
Probes
Indication
CERTIFIED ELECTRICIAN TO CONNECT MAIN POWER
AND FS99 FLOW SENSOR TO JB113 JUNCTION BOX
CERTIFIED ELECTRICIAN TO CONNECT MAIN POWER AND FS99 FLOW SENSOR TO JB113 JUNCTION BOX
The valve mounted JB113 Junction Box is a lockable NEMA 4 enclosure equipped with an adjustable time delay, electrical relay and terminal strip. There are three 3/4 inch conduit connections. The valve solenoid is prewired.
The valve is normally open and closes when continuous relief valve discharge through the drain pipe is sensed by the FS99 Flow Sensor.
The valve mounted JB113 Junction Box is equipped with an adjustable time delay to avoid valve closure due to intermittent or nuisance relief valve discharge. The time delay is adjusable from 0-30 seconds.
Adjusting the dial clockwise increases the time delay for valve closure. Adjusting the dial counterclockwise decreases the time delay for valve closure.
Terminals 1 & 2: Connect to FS99 Flow Sensor Probes.
Terminals 3 & 4: Prewired to the solenoid.
Terminals 5 & 6: Terminals 5 and 6 may be used for remote trip indication to an alarm or Building Management System.
Installation Notes: · Terminal block accepts 10-22 AWG · Remote indication terminals 5 & 6 have a 120V, 10AMP
maximum. · Required voltage for JB114 Junction Box is 120V. · Probe Voltage is 12VAC 1.5mA. · Less than 1 amp draw.
LFF113-RFP -- FS-9T9eFclhonwicSael nBsuollretin - LFF113RFP
Accessories
Model 50 - Position Indicator The Model 50 Position Indicator is installed in the topmost cover port of the Main Valve and allows for visual indication of valve position. The Model 50 is also very useful during valve start-up and troubleshooting procedures.
A stainless steel indicating rod threads into the tapped portion of the Main Valve stem and moves inside of a cylindrical Pyrex sight tube. The indicating rod travels up and down, following Main Valve stem movement. The housing protects the sight tube and indicating rod, and allows visibility on two sides. The screw driver operated test cock installed on the top of the Model 50 housing provides a controlled method of removal of air from the cover chamber during start-up or troubleshooting of the Main Valve.
Front View
Top View
FS99 - Flow Sensor
The FS99 Flow Sensor is field installed in the discharge piping from the RPZ Relief Valve. The FS99 senses water in the discharge piping signaling the JB113 Junction Box to close the valve.
To Floor Drain
Sensor Probes installed 1/4 inch above pipe bottom
From RPZ Relief Valve (with Air Gap)
NOTE TO INSTALLING CONTRACTOR
· Client/Contractor to provide installation Tee for Flow Sensor. · Install Flow Sensor in RPZ discharge line in HORIZONTAL
position as shown. · Sensor Probes should be cut to length and installed 1/4 inch
above pipe bottom. · ENSURE SENSOR PROBES DO NOT CONTACT PIPE
BOTTOM OR SIDES. · CERTIFIED ELECTRICIAN TO CONNECT MAIN POWER AND
FS99 FLOW SENSOR TO JB113 JUNCTION BOX
LFF113-RFP -- AcceTsescohrineiscal Bulletin - LFF113RFP
Accessories
The Solenoid is prewired to the JB113 Junction Box and is equipped with a Solenoid By-Pass valve (normally closed) which manually closes the Main Valve when engaged. Opening the Solenoid By-Pass Valve (SB) pressurizes the Main Valve cover as indicated by Pressure Gauge (5), closing the Main Valve. Closing Solenoid By-Pass Valve and opening the Manual Reset Ball Valve (6) returns the Main Valve to the full open position. Pressure Gauge returns to zero when the Main Valve is fully open.
Note: Manual Reset Ball Valve must be closed for normal operation.
Valve Inlet
The valve pilot circuit is equipped with a Model 60 Flo-Clean Strainer which is used to filter the fluid passing through the control 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.
A Male Pipe Thread (in)
1/4 3/8 1/2
B Female Pipe Thread (in)
1/8 1/4 3/8
C Length Thread (in) 11/16
7/8 7/8
The Main Valve is provided standard with a specially coated Main Valve Stem for stand-by service. The special coating helps deter the effects of hard water and mineral deposits which may prohibit proper valve operation.
The Main Valve is also provided standard with a heavy cover spring to provide additional operating differential.
LFF113-RFP -- StartT-eucphnical Bulletin - LFF113RFP
Start-Up
Proper Automatic Control Valve startup 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 setup in a dynamic (flowing) condition for proper startup. Provisions for flow must be made to insure proper settings.
1. Refer to valve schematic. Close Solenoid By-Pass Valve (SB). Locate and open Manual Reset Ball Valve (6). Open upstream and downstream isolation valves to allow controlled filling of the Valve and Backflow Assembly. Open all Isolation Ball Valves.
2. Inlet pressure will open the valve fully. Close Manual Reset Ball Valve.
3. Open Solenoid By-Pass Valve to simulate electrical shutdown signal. Inlet pressure will be indicated on Pressure Gauge (5) and valve will begin to close. Due to low / no flow condition, valve closure may be slower than normal operation.
4. Close Solenoid By-Pass Valve and open Manual Reset Ball Valve. Pilot System Pressure Gauge will drop to zero. Valve will open fully and is ready for electrical activation. Allow for cover volume to discharge to floor drain. Refer to chart on Page 2 for Cover Chamber Volume. Close Manual Reset Ball Valve.
5. Open JB113 Junction Box. Apply power and observe the Electric Relay Control.
6. Pour adequate amount of water into RPZ Relief Valve Air Gap until the RED LED indicator light on the Electrical Relay illuminates / flashes. This indicates the FS99 Flow Sensor is properly installed and is sensing water in the discharge piping.
7. Trap water in discharge piping and observe RED LED on Electrical Relay. Solenoid will energize when duration of Time Delay elapses. Valve will go closed and must be manually reset. Adjust Time Delay to Customer / Project specifications. To manually reset valve refer to Step 4.
8. For final test simulate actual RPZ Relief Valve discharge and observe floor drain for excessive pooling or flooding. Re-adjust time delay and Adjustable Closing Speed (3) control as needed to achieve desired valve closure time.
Technical Bulletin - LFF113RFP
Specifications
The Flood Protection Shutdown Valve shall be a normally open Diaphragm Valve installed upstream of the Reduced Pressure Zone Backflow Assembly, and automatically close if the RPZ relief valve begins to discharge. A Time Delay supplied in the JB113 Junction Box shall prevent the valve from closing on intermittent discharges from the RPZ relief valve. If continuous Relief Valve discharge occurs, the FS99 Flow Sensor installed horizontally in the RPZ Relief Valve discharge piping shall send a signal to the JB113 Junction Box energizing Solenoid to close the main valve. Once closed the Flood Protection Shutdown Valve must be manually reset.
The JB113 Junction Box shall be valve mounted with the Solenoid pre-wired. The FS99 Flow Sensor shall be provided with the valve package and shall be field installed in a horizontal position in the RPZ Relief Valve discharge piping. Vertical installation of the Flow Sensor shall not be acceptable. The valve shall be equipped with a Position Indicator to provide local visual indication of valve closure. The Position Indicator shall be a stainless steel indicating rod which follows main valve stem movement as seen through a cylindrical Pyrex sight tube.
The Reduced Pressure Zone Backflow Assembly, Flood Protection Shutdown Valve, JB113 Junction Box and FS99 Flow Sensor shall be provided by the same manufacturer and be covered by a single warranty policy.
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 Certified 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.
The disc and diaphragm assembly shall contain a Buna-N synthetic rubber disc with a rectangular cross-section 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. Direction of flow through the valve shall be the under-thedisc design.
The exposed portion of the seat disc 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 deflection and assure positive disc-to-seat contact. Center guided valves will not be permitted. The main valve spring shall be the manufacturer's heavy or extra heavy spring design. All necessary repairs shall be made from the top of the valve while the body remains in line.
The Pilot Control System shall contain a Flo-Clean Strainer, NEMA 4, 120 VAC 60HZ 2-Way Solenoid with Manual Operator, Manual Reset Ball Valve, Pressure Gauge, Visual Position Indicator, JB113 Junction Box and Isolation Ball Valves on all body connections. The JB113 Junction Box shall be valve mounted and the FS99 Flow Sensor shall be field installed.
The valve shall be Watts Model LFF113RFP (globe) or LFF1113RFP (angle) Flood Protection Shutdown Valve.
Job Location
Approval
Engineer
Contractor's P.O. No.
Approval TechnicalBulletin -ReLprFesFen1ta1tiv3eRFP
Rate of Flow
Rate of Flow
Series 009, 909, 919, 957 and 994
Reduced Pressure Zone Assemblies
Relief Valve Discharge Rates
lpm gpm 152 40 133 35
114 30
95 25
76 20 57 15 38 10 19 5 0 0
0 0
1/4", 3/8", 1/2" 009QT
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 psi .7 1.4 2.0 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8.3 9.0 9.7 10.3 11.0 11.7 12.4 bar
Pressure
lpm gpm 266 70 228 60
190 50
152 40
114 30 76 20
38 10
0 0 0 0
3/4" 009M3QT
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 psi .7 1.4 2.0 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8.3 9.0 9.7 10.3 11.0 11.7 12.4 bar
Pressure
lpm gpm 228 60 190 50 152 40 114 30
76 20 38 10 0 0
0 0
1" 009M2QT
10 20 30 40 50 60 70 80 69 138 207 276 345 414 483 552
Pressure
90 100 psi 621 690 kPa
Note: These curves represent catastrophic or worst case discharge rates. These curves were developed by pressurizing the outlet of the backflow preventer with the second check valve's internals removed from the body.
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.
Rate of Flow
Rate of Flow
Rate of Flow
Technical Bulletin - LFF113RFP
lpm gpm 532 140
11/4" 009M2QT
456 120
380 100
304 80
228 60
152 40
76 20
0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 psi 0 .7 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8.3 9.0 9.7 10.3 11.0 11.7 12.4 bar
Pressure
lpm gpm 513 35 456 120 399 105 342 90 285 75 228 60 171 45 114 30 57 15
0 0 0 10 0 .7
11/2" 009M2QT
20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 psi 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8.3 9.0 9.7 10.3 11.0 11.7 12.4 bar
Pressure
lpm gpm 836 220 760 200 684 180 608 160 532 140 456 120 380 100 304 80 228 60 152 40 76 20
0 0 0 0
10 20 .7 1.4
30 40 2.1 2.8
2" 009M2QT
50 60 70 80 90 100 110 120 130 140 150 160 170 psi 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8.3 9.0 9.7 10.3 11.0 11.7 bar
Pressure
Rate of Flow
Rate of Flow
lpm gpm 1330 350
21/2", 3" 009
1140 300
950 250
760 200
570 150
380 100
190 50
0 0 0 10 20 30 40 50 60 70 80 90 100 110120 130 140 150 160 170 180 psi 0 .7 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8. 3 9.0 9.6 10.3 11.0 11.7 12.4 bar
Pressure
2
Note: These curves represent catastrophic or worst case discharge rates. These curves were developed by pressurizing the outlet of the backflow preventer with the second check valve's internals removed from the body.
Rate of Flow
lpm gpm 570 150 475 125 380 100 285 75 190 50 95 25
Technical Bulletin - LFF113RFP
3/4", 1" 909
Rate of Flow
lpm gpm 1520 400
11/4", 11/2", 2" 909
1330 350
1140 300
950 250
760 200
570 150
380 100
190 50
0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 psi 0 .7 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8. 3 9.0 9.6 10.311.0 11.712.4 bar
Pressure
0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 psi
0 .7 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8. 3 9.0 9.6 10.3 bar
Pressure
Rate of Flow
lpm gpm 2090 550
21/2" - 3" 909
1900 500
1710 450
1520 400
1330 350
1140 300
950 250
760 200
570 150
380 100
190 50
0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 psi 0 .7 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 8. 3 9.0 9.6 10.3 11.0 11.7 12.4 bar
Pressure
lpm gpm 3420 900
4", 6", 8", 10" 909
3040 800
2660 700 2280 600 1900 500
1520 400
1140 300
760 200
380 100
0 0 0 5 15 25 35 45 55 65 75 85 95 105 115 125 135 145 psi 0 .3 1.0 1.7 2.4 3.1 3.8 4.5 5.5 5.9 6.5 7.2 7.9 8.6 9.3 10 bar
Pressure
Note: These curves represent catastrophic or worst case discharge rates. These curves were developed by pressurizing the outlet of the backflow preventer with the second check valve's internals removed from the body.
3
Rate of Flow
Rate of Flow
Rate of Flow
Technical Bulletin - LFF113RFP
lpm gpm 228 60
1" 919 RV
Capacity w/Second Check Removed
190 50
152 40
114 30
76 20
38 10
0 0 0 10 20 30 40 50 60 70 80 90 100 110120130 140150160 170 180 psi 0 .7 1.4 2.0 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.8 8.3 9.0 9.710.311.011.712.4 bar
Pressure
Rate of Flow
2" 919 QT
Backpressure w/Second Check
lpm gpm
684 180 170
6.8 160 570 150 532 140
130
Poppet & Spring Removed
456 120 110
380 100 342 90 304 80
266 70 228 60 190 50
152 40 114 30
76 20
38 10
0 0
0 10 20 30 40 50 60 70 80 90 100 110 psi
0 .7 1.4 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 7.6 psi
Pressure
lpm gpm 3420 909000
3040 808000
2660 707000
2280
1900
1520
1140 760 380
0
606000
500
500
400
400
300
300 202000
101000
00 0 0 0
lpm gpm 1330 350 1140 300 950 250
760 200
570 150
380 100
190 50 0 0 0 0
21/2" 10" 994
4400
8800
112200
11660 0
220000
224400
276
552
827
1103
1379
1655
Pressure
21/2" 10" 957
20
40
60
138
276
414
Pressure
80 psi 552 kPa
228800 300 psi 1931 kPa
Note: These curves represent catastrophic or worst case discharge rates. These curves were developed by pressurizing the outlet of the backflow preventer with the second check valve's internals removed from the body.
Typical Flow Rates as sized by floor drain manufacturers
gpm
lpm
55
209
112
426
170
646
350
1330
Drain Size
2 3 4 5
Rate of Flow
TB-ACV-LFF113RFP 1725 Water Safety & Flow Control Products
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