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- Plumbing
- Check Valves and Backflow Preventers
- Backflow Preventers
WATTS Backflow Preventers
Designed to prevent potable water contamination from the reverse flow of polluted water. Capable of bearing up to 180 psi pressures and have a maximum operating temperature of 180 degrees F
Designed to prevent potable water contamination from the reverse flow of polluted water. Capable of bearing up to 180 psi pressures and have a maximum operating temperature of 180 degrees F
Double Check Backflow Preventers
Style | Model | Connection Type | Height | Max. Pressure | Temp. Range | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|
A | 007M2-QT 1 1/2 | - | RFQ | ||||
B | 1/2 007-QT | - | RFQ | ||||
C | LF007M1-QT 1 | - | RFQ | ||||
D | 1/2 LF007-QT-S | - | RFQ | ||||
E | LF007M3-QT 3/4 | - | RFQ | ||||
F | 1/2 LF007-QT | - | RFQ | ||||
G | LF007M1-QT 2 | - | RFQ | ||||
A | 007M2-QT 1 1/4 | €1,266.46 | |||||
A | 1 1/2 LF007M2-QT-S | €1,971.76 | |||||
H | 1 LF007M1-QT-PRESS | €775.72 |
5000SS Series Reduced Pressure Zone Assemblies
Style | Model | Seat Material | Body Pattern | Max. Working Pressure | Min. Temp. | Type | Meter Type | Inlet Type | Outlet Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 5000SS-LG-GPM 3 | €6,391.40 | RFQ | ||||||||
A | 5000SS-LG-GPM 2 1/2 | €5,835.98 | RFQ | ||||||||
B | 5000SS-OSY-GPM 2 1/2 | €7,186.51 | RFQ | ||||||||
C | 5000SS-OSY-GPM 3 | €7,944.50 | RFQ | ||||||||
A | 5000SS-LG-GPM 6 | €11,045.67 | RFQ | ||||||||
C | 5000SS-OSY-GPM 6 | €13,750.12 | RFQ | ||||||||
C | 5000SS-OSY-GPM 4 | €9,365.95 | RFQ | ||||||||
A | 5000SS-LG-GPM 4 | €7,623.75 | RFQ |
919 Series Reduced Pressure Zone Assemblies
Style | Model | Seat Material | Body Pattern | Type | Valve Type | Max. Working Pressure | Min. Temp. | Inlet Type | Outlet Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 919-QT 1 1/4 | €1,096.96 | RFQ | ||||||||
B | 919-AQT 3/4 | €1,057.63 | RFQ | ||||||||
B | 919-AQT 1/2 | €918.36 | RFQ |
Style | Model | Meter Type | Seat Material | Body Pattern | Max. Working Pressure | Min. Temp. | Type | Inlet Type | Outlet Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | LFC500Z-OSY-CFM 2 1/2 | €6,907.98 | RFQ | ||||||||
A | LFC500Z-OSY-CFM 4 | €9,023.25 | RFQ | ||||||||
A | LFC500Z-OSY-CFM 8 | €23,251.19 | RFQ | ||||||||
A | LFC500Z-OSY-GPM 2 1/2 | €6,907.98 | RFQ |
Backflow Preventers
Style | Model | Max. Working Pressure | Min. Temp. | Inlet Type | Outlet Type | Inlet Thread Type | Backflow Preventer Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|
A | 994-NRS | €5,932.47 | |||||||
B | 919A-QT | - | RFQ | ||||||
C | L7U2-2-TC 3/4 | €772.33 | RFQ | ||||||
D | L7U2-2-TC-QT 1 | €987.57 | RFQ |
Ames Colt Series C400 Reduced Pressure Zone Assemblies
Style | Model | Inlet Type | Outlet Type | Seat Material | Body Pattern | Max. Working Pressure | Min. Temp. | Type | Disc Material | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | C400-OSY-FXG 6 | €10,387.25 | RFQ | ||||||||
B | C400-OSY 2 1/2 | €4,384.17 | RFQ | ||||||||
B | C400-DOSY 2 1/2 | €4,953.05 | RFQ | ||||||||
B | C400-OSY 6 | €10,387.25 | RFQ | ||||||||
B | C400-OSY 3 | €4,929.43 | RFQ | ||||||||
B | C400-DOSY 6 | €11,739.49 | RFQ | ||||||||
A | C400-OSY-GXG 3 | €4,929.43 | RFQ | ||||||||
A | C400-OSY-GXG 8 | €17,634.57 | RFQ | ||||||||
A | C400-NRS-GXG 3 | €4,905.81 | RFQ |
LFFBV Series Full Port Ball Valves
Style | Model | MPN | Price (ex. VAT) | |
---|---|---|---|---|
A | LFFBV-M 1/2 A | €111.67 | ||
B | LFFBV-M 3/4 | €139.29 |
5000SS Series Reduced Pressure Detector Assemblies
Style | Model | Inlet Type | Body Pattern | Max. Working Pressure | Min. Temp. | Type | Meter Type | Outlet Type | Disc Material | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 5000SS-DOSY-FXG-GPM 3 | €7,944.50 | RFQ | ||||||||
B | 5000SS-DOSY-FXG-GPM 6 | €13,750.12 | RFQ | ||||||||
C | 5000SS-DOSY-GXG-GPM 4 | €10,020.94 | RFQ | ||||||||
D | 5000SS-DOSY-GXG-GPM 6 | €14,712.37 | RFQ |
3000SE Series Double Check Detector Backflow Preventer Assemblies
Style | Model | Inlet Type | Seat Material | Body Pattern | Max. Working Pressure | Min. Temp. | Disc Material | Bypass Size | Meter Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 3000SE-LG-CFM 2 1/2 | €7,544.42 | RFQ | ||||||||
B | 3000SE-OSY-CFM 2 1/2 | €9,965.23 | RFQ | ||||||||
C | 3000SE-LG-LM 2 1/2 | €7,365.48 | RFQ | ||||||||
D | 3000SE-OSY-LM 2 1/2 | €9,784.59 | RFQ | ||||||||
E | 3000SE-OSY-GPM 2 1/2 | €9,965.23 | RFQ | ||||||||
F | 3000SE-LG-GPM 2 1/2 | €7,544.42 | RFQ |
200B Series Double Check Valve Assemblies
4000SS Series Reduced Pressure Zone Assemblies
Style | Model | Seat Material | Body Pattern | Max. Working Pressure | Min. Temp. | Type | Inlet Type | Outlet Type | Disc Material | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 4000SS-F-OSY 4 | €8,126.82 | RFQ | ||||||||
B | 4000SS-LG 10 | €23,699.97 | RFQ | ||||||||
C | 4000SS-NRS 10 | €32,039.30 | RFQ | ||||||||
A | 4000SS-OSY 10 | €32,388.80 | RFQ |
957 Series Reduced Pressure Zone Assemblies
Style | Model | Max. Working Pressure | Type | Inlet Type | Outlet Size | Outlet Type | Body Style | Seat Material | Connection Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 957-OSY 2 1/2 | €6,236.47 | |||||||||
B | 957-QT 3 | €6,139.84 | RFQ | ||||||||
A | 957-OSY 3 | €5,458.86 | |||||||||
C | 957-NRS-S 2 1/2 | €4,343.63 | RFQ | ||||||||
C | 957-NRS-S 4 | €6,433.59 | RFQ | ||||||||
C | 957-NRS-S 3 | €5,299.15 | RFQ | ||||||||
D | 957-BFG 4 | €7,382.35 | RFQ | ||||||||
D | 957-BFG 6 | €11,690.55 | RFQ | ||||||||
B | 957-QT 2 1/2 | €5,017.21 | RFQ | ||||||||
E | 957-NRS 8 | €14,345.26 | RFQ | ||||||||
E | 957-NRS 6 | €8,198.04 | RFQ | ||||||||
F | 957-DNRS 4 | €4,200.87 | RFQ | ||||||||
D | 957-NRS-GXG 6 | €10,652.33 | RFQ | ||||||||
D | 957-OSY-GXG 8 | €19,655.79 | RFQ | ||||||||
D | 957-OSY-GXG 4 | €7,115.62 | RFQ | ||||||||
G | 957-DOSY 8 | €19,655.79 | RFQ | ||||||||
D | 957-OSY-GXG 3 | €6,430.23 | RFQ | ||||||||
D | 957-OSY-GXG 6 | €11,319.15 | RFQ | ||||||||
D | 957-OSY-GXG 2 1/2 | €5,753.27 | RFQ | ||||||||
H | 957-DNRS 2 1/2 | €3,156.23 | RFQ | ||||||||
G | 957-DOSY 4 | €8,035.68 | RFQ | ||||||||
H | 957-DNRS 3 | €3,313.94 | RFQ | ||||||||
H | 957-DNRS 10 | €45,526.07 | RFQ | ||||||||
H | 957-NRS 4 | €4,200.87 | RFQ | ||||||||
G | 957-DOSY 3 | €7,267.54 | RFQ |
LF909 Small Series Reduced Pressure Zone Assemblies
Style | Model | Connection Type | Max. Pressure | Temp. Range | |
---|---|---|---|---|---|
A | 2 1/2 LF909-DNRS | RFQ | |||
B | 6 LF909-DOSY | RFQ |
LF009 Series Reduced Pressure Zone Assemblies
Style | Model | Seat Material | Body Finish | Strainer | Max. Working Pressure | Type | Inlet Type | Outlet Size | Outlet Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | LF009M2-QT-S 1 | €971.92 | |||||||||
B | LF009M3-QT 3/4 | - | RFQ | ||||||||
C | LF009M3-QT-S 3/4 | €694.45 | RFQ | ||||||||
D | LF009M2-QT 1 1/2 | €1,319.39 | RFQ | ||||||||
E | LF009-QT-S 1/2 | €592.55 | RFQ | ||||||||
F | LF009M2-QT-S 1 | €688.39 | RFQ | ||||||||
G | LF009M2-QT 1 1/4 | €1,239.85 | RFQ | ||||||||
H | LF009M2-QT 2 | - | RFQ | ||||||||
I | LF009M2-QT-S 1 1/2 | €1,434.49 | RFQ | ||||||||
J | LF009M2-PC-QT 1 | €1,258.54 | RFQ | ||||||||
G | LF009M2-PC-QT 1 1/4 | €1,973.47 | RFQ | ||||||||
K | LF009M2-PC-QT 2 | €2,452.92 | RFQ | ||||||||
L | LF009M3-QT (W/PRESS) 3/4 | €664.45 | RFQ | ||||||||
M | LF009M2-LF 1 | €1,061.84 | RFQ | ||||||||
N | LF009M3-LF 3/4 | €912.44 | RFQ | ||||||||
O | LF009PC-QT 1/2 | €978.30 | RFQ | ||||||||
P | LF009-LF 2 1/2 | €5,121.88 | RFQ | ||||||||
Q | LF009-DNRS 3 | €7,660.88 | RFQ | ||||||||
R | LF009-DOSY 3 | €8,545.51 | RFQ | ||||||||
R | LF009-DOSY 2 1/2 | €7,324.94 | RFQ | ||||||||
B | LF009M3-QT-CT 3/4 | €1,099.84 | RFQ | ||||||||
Q | LF009M2-QT-CT 1 | €1,299.89 | RFQ | ||||||||
N | LF009M2-LF 1 1/4 | €1,689.85 | RFQ | ||||||||
N | LF009M2-LF-UL 2 | €1,958.28 | RFQ | ||||||||
N | LF009M2-LF 1 1/2 | €1,900.88 | RFQ |
Double Check Valve Backflow Preventer Assemblies
Style | Model | Seat Material | Min. Temp. | Disc Material | Max. Working Pressure | Type | Inlet Type | Body Finish | Body Pattern | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 200-LBV 2 | €998.57 | RFQ | ||||||||
B | 870V-4-DC-LG-DIN-N&V | €3,744.35 | RFQ |
994 Series Reduced Pressure Zone Assemblies
Style | Model | Type | Inlet Type | Outlet Size | Outlet Type | Seat Material | Body Finish | Strainer | Max. Working Pressure | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 994-OSY 6 | €13,837.90 | RFQ | ||||||||
A | 994-OSY 3 | €7,863.49 | RFQ | ||||||||
A | 994-OSY 4 | €8,695.75 | RFQ | ||||||||
A | 994-OSY 8 | €24,225.80 | RFQ | ||||||||
A | 994-OSY 2 1/2 | €6,762.77 | RFQ | ||||||||
B | 994-NRS 8 | €22,801.76 | RFQ | ||||||||
A | 994-DOSY 2 1/2 | €7,237.16 | RFQ | ||||||||
A | 994-DOSY 3 | €8,413.81 | RFQ | ||||||||
A | 994-DNRS 3 | €7,144.32 | RFQ | ||||||||
C | 994-LF 10 | €24,802.66 | RFQ | ||||||||
A | 994-OSY 10 | €33,014.53 | RFQ | ||||||||
D | 994-LF 8 | €19,089.30 | RFQ | ||||||||
E | 994-NRS 2 1/2 | €6,327.26 | RFQ | ||||||||
B | 994-NRS 6 | €13,025.87 | RFQ | ||||||||
C | 994-LF 6 | €10,784.00 | RFQ | ||||||||
A | 994-OSY-GXG 8 | €25,921.86 | RFQ | ||||||||
A | 994-OSY-GXG 6 | €14,806.91 | RFQ | ||||||||
A | 994-OSY-GXG 4 | €9,306.84 | RFQ | ||||||||
A | 994-OSY-GXG 3 | €8,413.81 | RFQ | ||||||||
A | 994-OSY-GXG 2 1/2 | €7,237.16 | RFQ | ||||||||
B | 994-NRS 3 | €7,144.32 | RFQ | ||||||||
A | 994-DOSY 4 | €9,306.84 | RFQ |
009 Series Reduced Pressure Zone Assemblies
Style | Model | Seat Material | Valve Type | Strainer | Max. Working Pressure | Type | Inlet Type | Outlet Size | Fitting | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 009-M1-QTS | €852.11 | |||||||||
B | 009-QT-SC 1/2 | €1,022.19 | RFQ | ||||||||
C | 009M2-QT HC 2 | €2,402.27 | RFQ | ||||||||
D | 009M2-QT 2 | €1,205.40 | RFQ | ||||||||
E | U009M2-PC-QT 2 | €2,272.25 | RFQ | ||||||||
D | 009M2-PC-QT 1 1/2 | €1,705.04 | RFQ | ||||||||
F | U009M2-A-PC-QT 2 | €2,513.67 | RFQ | ||||||||
D | 009M2-QT-SH 1 1/2 | €1,578.42 | RFQ | ||||||||
G | 009M3-LF 3/4 | €730.14 | RFQ | ||||||||
H | 009M2-LF 1 1/4 | €1,351.37 | RFQ | ||||||||
I | U009M2-QT-S 1 1/2 | €2,005.52 | RFQ | ||||||||
J | U009M2-QT 1 1/2 | €1,696.61 | RFQ | ||||||||
J | U009M2-QT 1 1/4 | €1,532.83 | RFQ | ||||||||
K | U009M2-QT-S-SH 2 | €2,728.07 | RFQ | ||||||||
L | U009M2-QT-S-SH 1 1/2 | €2,213.19 | RFQ | ||||||||
B | U009M2-QT-S-SH 3/4 | €1,077.06 | RFQ | ||||||||
M | U009M2-QT-S-SH 1 1/4 | €1,970.09 | RFQ | ||||||||
N | 009M2-QT-CT 1 | €1,039.92 | RFQ | ||||||||
O | 009-QT-CT 1/2 | €662.58 | RFQ | ||||||||
P | 009M2-LF 1 | €850.82 | RFQ | ||||||||
D | 009M2-PC-QT 1 | €1,006.98 | RFQ | ||||||||
Q | U009M2-QT-S 2 | €2,466.40 | RFQ | ||||||||
E | U009M2-QT 2 | €2,030.85 | RFQ | ||||||||
B | 009M2-QT-BC 1 | €1,039.92 | RFQ | ||||||||
B | 009M3-QT-BC 3/4 | €880.36 | RFQ |
719 Series Double Check Valve Assemblies
Watts 719 Series double check valve assemblies are used in plumbing systems to prevent the backflow of water and protect the potable water supply from contamination. These backflow preventers feature bronze alloy construction for structural rigidity and corrosion resistance. They are further coupled with elastomers that resist the effects of chloramine. These backflow preventers have a separate access and a top-entry check valve arrangement that facilitates convenient maintenance procedures. They have a maximum working pressure of 175 psi (12.06 bar).
Watts 719 Series double check valve assemblies are used in plumbing systems to prevent the backflow of water and protect the potable water supply from contamination. These backflow preventers feature bronze alloy construction for structural rigidity and corrosion resistance. They are further coupled with elastomers that resist the effects of chloramine. These backflow preventers have a separate access and a top-entry check valve arrangement that facilitates convenient maintenance procedures. They have a maximum working pressure of 175 psi (12.06 bar).
Style | Model | Valve Type | Max. Working Pressure | Inlet Type | Outlet Type | Strainer | Outlet Size | Fitting | Inlet Thread Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 719-LF 1/2 | €467.64 | RFQ | ||||||||
A | U719-QT-S 2 | €1,931.25 | RFQ | ||||||||
A | 719-LF 3/4 | €509.83 | RFQ | ||||||||
A | 719-QT-LH 1 | €631.39 | RFQ | ||||||||
A | 719-LF 1 1/4 | €795.98 | RFQ | ||||||||
B | 719QTS 2 | €1,621.48 | RFQ | ||||||||
A | 719QT-S-R10 1/2 | €744.47 | RFQ | ||||||||
A | 719QT-S-R10 3/4 | €744.47 | RFQ | ||||||||
B | 719-AQT-R10 3/4 | €924.25 | RFQ |
Style | Model | Seat Material | Max. Working Pressure | Min. Temp. | Type | Inlet Type | Outlet Type | Inlet Thread Type | Body Pattern | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | D4000B 2 | €1,782.69 | RFQ | ||||||||
A | 4000BM3-LH 3/4 | €880.36 | RFQ |
Style | Model | Meter Type | Seat Material | Body Pattern | Max. Working Pressure | Min. Temp. | Type | Inlet Type | Outlet Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | C500N-OSY-LM 8 | €21,809.93 | RFQ | ||||||||
A | C500N-DOSY-C 4 | €9,619.16 | RFQ | ||||||||
A | C500N-DOSY-C 8 | €21,933.91 | RFQ | ||||||||
A | C500N-DOSY-G 8 | €21,933.91 | RFQ |
LF709 Series Double Check Valve Assemblies
Style | Model | Valve Type | Max. Working Pressure | Strainer | Outlet Size | Seat Material | Body Finish | Min. Temp. | Type | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|---|---|
A | LF709-QT-FDA 6 | €16,545.71 | RFQ | ||||||||
A | LF709-QT-S-FDA 2 1/2 | €9,473.98 | RFQ | ||||||||
A | LF709-QT-FDA 2 1/2 | €8,604.56 | RFQ | ||||||||
B | LF709-DNRS 3 | €7,382.35 | RFQ | ||||||||
B | LF709-DNRS 8 | €29,462.95 | RFQ | ||||||||
C | LF709-NRS-S-FDA 10 | €41,703.64 | RFQ | ||||||||
C | LF709-NRS-S-FDA 6 | €15,179.98 | RFQ | ||||||||
C | LF709-NRS-S-FDA 4 | €9,268.01 | RFQ | ||||||||
B | LF709-NRS 8 | €27,533.61 | RFQ | ||||||||
B | LF709-NRS 10 | €35,559.09 | RFQ | ||||||||
D | LF709-NRS 2 1/2 | €6,725.63 | RFQ | ||||||||
B | LF709-DNRS 10 | €38,049.04 | RFQ | ||||||||
B | LF709-DNRS 4 | €7,834.77 | RFQ | ||||||||
E | LF709-NRS 4 | €7,834.77 | RFQ | ||||||||
A | LF709-NRS-S 2 1/2 | €8,128.52 | RFQ | ||||||||
A | LF709-DNRS 2 1/2 | €7,196.62 | RFQ | ||||||||
B | LF709-DNRS 6 | €13,831.15 | RFQ | ||||||||
C | LF709-QT-S-FDA 4 | €11,457.55 | RFQ | ||||||||
C | LF709-QT-FDA 4 | €10,024.31 | RFQ | ||||||||
C | LF709-QT-FDA 3 | €9,448.68 | RFQ | ||||||||
C | LF709-QT-FDA 8 | €35,245.91 | RFQ | ||||||||
C | LF709-QT-S-FDA 3 | €10,368.69 | RFQ | ||||||||
C | LF709-QT-S-FDA 8 | €38,521.47 | RFQ |
Features
- Watts backflow preventers feature a compact, modular design for installation in tight spaces.
- Their single-cover, top-entry facility permits easy access for maintenance purposes.
- They are capable of bearing up to 180 psi pressures and have a maximum operating temperature of 180 degrees F.
- They come equipped with replaceable seats and seat discs. They do not require any special tools for servicing.
Frequently Asked Questions
How does backflow occur?
Backflow is generated by cross-connections that have the possibility of permitting pollutants into the drinking water system. Back siphonage can happen when the pressure in a tank is less than the water system's pressure.
Can check valves prevent backflow?
Check valves offer a basic form of backflow prevention, stopping water from flowing in the wrong direction.
Are dual check valves the same as backflow preventers?
Double-check valves (also known as double-check assembly) are somewhere in between a check valve and a backflow preventer. They are usually installed in places where backflow requires to be contained with a one-way valve, but the investment needs to be less than a backflow preventer.
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