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.

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

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Watts backflow preventers are designed to stop potable water contamination from the reverse flow of polluted water. They are employed in industrial settings where chemicals are connected to water...Read more

WATTS -

Mini Straight Valves

Style	Model	Body Material	Seat Material	Valve Type	Body Finish	Strainer	Max. Working Pressure	Type	Meter Type	Price
A	8C-Z2	-	-	-	-	-	-	-	-	-	RFQ
B	9DM3 1/2	-	-	-	-	-	-	-	-	-	RFQ
C	912HP 3/4	-	-	-	-	-	-	-	-	-	RFQ
D	912HP 1	Brass	PTFE	No Shutoff Valve	Brass	Yes	27.5 Bar	Kit	No Meter	€929.19

WATTS -

LFFBV Series Full Port Ball Valves

Style	Model	MPN	Price
A	LFFBV-M 1/2 A	LFFBV-M 1/2 A	€92.29
A	LFFBV-M 3/4	LFFBV-M 3/4	€115.12

WATTS -

LF909 Small Series Reduced Pressure Zone Assemblies

Style	Model	Body Material	Valve Type	Body Finish	Strainer	Max. Working Pressure	Min. Temp.	Type	Inlet Type	Price
A	LF909M1-QT-S-HW 1 1/2	-	Quarter Turn Ball Valve	Plain	Yes	175 psi	33°F	Kit	Male Threaded	€5,210.79	RFQ
A	LF909M1-QT-S-HW 1 1/4	-	Quarter Turn Ball Valve	Plain	Yes	175 psi	33°F	Kit	Male Threaded	€4,777.07	RFQ
B	LF909M1-QT-S-FS 1 1/4	-	-	-	-	-	-	-	-	-	RFQ
C	2 1/2 LF909-DNRS	Cast Iron	-	-	-	-	-	-	-	-	RFQ
D	6 LF909-DOSY	Cast Iron	-	-	-	-	-	-	-	-	RFQ
E	LF909-QT-HW 3/4	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	No	12.1 Bar	0.5°C	Valve To Accessory	Female Threaded	€2,336.78	RFQ
E	LF909-QT-HW 1	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	No	175 psi	33°F	Kit	Female Threaded	€2,785.01	RFQ
A	LF909M1-QT-S-HW 2	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	Yes	175 psi	33°F	Kit	Male Threaded	€6,006.31	RFQ
F	LF909-QT-S-HW 1	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	Yes	175 psi	33°F	Kit	Female Threaded	€3,095.02	RFQ
E	LF909-QT-S-HW 3/4	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	Yes	12.1 Bar	33°F	Valve To Accessory	Female Threaded	€2,604.02	RFQ
G	LF909M1-QT-HW 1 1/4	Lead Free Bronze	No Shutoff Valve	Bronze	No	175 psi	33°F	Kit	Female Threaded	€4,304.66	RFQ
G	LF909M1-QT-HW 1 1/2	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	No	12.1 Bar	0.5°C	Kit	Female Threaded	€4,776.99	RFQ
G	LF909M1-QT-HW 2	Lead Free Bronze	Quarter Turn Ball Valve	Cast Bronze	No	175 psi	33°F	Kit	Female Threaded	€5,177.88	RFQ

WATTS -

LFU009 Series Reduced Pressure Zone Assemblies

Style	Model	Body Material	Valve Type	Body Finish	Strainer	Max. Working Pressure	Min. Temp.	Type	Meter Type	Price
A	LFU009M2-QT-S-FS 3/4	-	-	-	-	-	-	-	-	-	RFQ
B	LFU009M2-QT-S-FS 1	-	-	-	-	-	-	-	-	-	RFQ
C	LFU009M2-QT-S-FS 2	-	-	-	-	-	-	-	-	-	RFQ
D	LFU009M2-QT-FS 1 1/4	-	-	-	-	-	-	-	-	-	RFQ
A	LFU009M2-QT-S-FS 1/2	-	-	-	-	-	-	-	-	-	RFQ
E	LFU009M2-QT-S-FS 1 1/2	-	-	-	-	-	-	-	-	-	RFQ
F	LFU009-QT 1/2	Lead Free Bronze	Quarter Turn Ball Valve	Copper Silicon Alloy Plated	No	175 psi	33°F	Valve To Accessory	No Meter	€659.22	RFQ

WATTS -

LF909 Large Series Reduced Pressure Zone Assemblies

Style	Model	Outlet Size	Body Material	Connection Type	Max. Pressure	Temp. Range	Seat Material	Body Finish	Body Pattern	Price
A	LF909-DNRS-S-FS 2 1/2	-	-	-	-	-	-	-	-	-	RFQ
B	4 DLF909-OSY	-	Cast Iron	Flanged	175 psi	+33°F to +110°F	-	-	-	-	RFQ
C	LF909-LF-FS 2 1/2	-	-	-	-	-	-	-	-	-	RFQ
D	LF909-NRS-FP 4	-	-	-	-	-	-	-	-	-	RFQ
E	LF909-LF-FS 6	-	-	-	-	-	-	-	-	-	RFQ
C	LF909-LF-NYC-FS 3	-	-	-	-	-	-	-	-	-	RFQ
F	LF909-DNRS-FS 6	-	-	-	-	-	-	-	-	-	RFQ
G	3 DLF909-OSY	-	Cast Iron	Flanged	175 psi	+33°F to +110°F	-	-	-	-	RFQ
A	LF909-DNRS-S-FS 3	-	-	-	-	-	-	-	-	-	RFQ
D	LF909-NRS-FP 3	-	-	-	-	-	-	-	-	-	RFQ
E	LF909-LF-FS 4	-	-	-	-	-	-	-	-	-	RFQ
E	LF909-LF-NYC-FS 4	-	-	-	-	-	-	-	-	-	RFQ
H	LF909-NRS 2 1/2	2 1/2"	-	-	-	-	Stainless Steel	Epoxy Coated	Inline	€5,102.72	RFQ
I	LF909-LF 4	4"	Cast Iron	-	-	-	Stainless Steel	Epoxy Coated	Inline	€8,446.40	RFQ

WATTS -

LF909 Series Reduced Pressure Zone Assemblies

Style	Model	Overall Height	Connection Type	Body Material	Seat Material	Backflow Preventer Type	Mounting Orientation	Price
A	LF909-DNRS-FS	14.63"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€7,125.94
A	LF909-DNRS-FS	15 1/2"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€7,780.30
B	LF909-DNRS-FS	18.19"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€8,855.06
C	LF909-DOSY-FS	21.63"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€6,863.42
D	LF909-DOSY-FS	24.13"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€6,668.23
E	LF909-DOSY-FS	28.75"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€8,238.09
E	LF909-DOSY-FS	36.13"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€17,175.16
F	LF909M1-DOSY-FS	47 1/2"	Flange	Cast Iron	Stainless Steel	Reduced Pressure Assembly (Rp)	Horizontal, Vertical	€26,460.91

WATTS -

9D Series Dual Check Valves

Style	Model	Type	Outlet Size	Connection Type	Body Material	Seat Material	Body Finish	Strainer	Min. Temp.	Price
A	9D-M2-3/4	Wholesale To Retail	3/4"	FNPT x FNPT	Brass	Rubber	Plain	Yes	33°F	€188.75
A	9D-M3-1/2	Wholesale To Retail	1/2"	FNPT x FNPT	Brass	Rubber	Plain	Yes	33°F	€223.97

WATTS -

Transition Risers

WATTS FRK 850/856/860/870V/876V/880V-S 2 1/2-3

Style	Model	MPN	Price
A	ARK SE/SS-C	ARK SE/SS-C	€831.86	RFQ
B	FRK805/825/826-RC4 2 1/2	FRK805/825/826-RC4 2 1/2	€56.41	RFQ
C	FRK 850/856-RT	FRK 850/856-RT	€327.43	RFQ
D	FRK 850/856/860 D 2 1/2-3	FRK 850/856/860 D 2 1/2-3	€168.87	RFQ
E	FRK 850/856/860/870V/876V/880V-S 2 1/2-3	FRK 850/856/860/870V/876V/880V-S 2 1/2-3	€275.79	RFQ
F	FRK 876V-SM 10	FRK 876V-SM 10	€738.18	RFQ
G	HK 7	HK 7	€16.95
H	HK SFBV-LL 1/4-3/4	HK SFBV-LL 1/4-3/4	€12.16
I	LFFRK825Y-VS 3/4-1 1/4	LFFRK825Y-VS 3/4-1 1/4	€64.53	RFQ
J	LFFRK 850-866V-D 8-10 870-886 8	LFFRK 850-866V-D 8-10 870-886 8	€460.92	RFQ
K	LFFRK 850-CK4 8-10 870 CK4 8	LFFRK 850-CK4 8-10 870 CK4 8	€1,735.97	RFQ
L	LFFRK 880-CK1 10	LFFRK 880-CK1 10	€3,275.93	RFQ
M	RK 9BD-T	RK 9BD-T	€65.28

WATTS -

Vacuum Breakers

Style	Model	Connection Type	Max. Pressure	Body Material	Height	Seat Material	Overall Height	Mounting Orientation	Price
A	LFFRVB-B	-	-	-	-	-	-	-	€105.75	RFQ
B	LFFRVB-A	-	-	-	-	-	-	-	€94.62	RFQ
C	3/4 8P	Female GHT x Male GHT	125 psi	Reinforced Thermoplastic	1 3/4"	-	-	-	€43.75
D	1/2 LF800M4-FR	FIP x FIP	150 psi	Bronze	6 1/4"	Plastic	6 1/4"	Vertical	€909.25
E	1 1/2 LF800M4-FR	FNPT	150 psi	-	9 1/2"	-	-	-	€1,935.69
F	800M4-FR	FNPT x FNPT	-	Bronze	-	Plastic	9"	Vertical	€1,399.36
G	2" LF800M4-QT	FNPT x FNPT	-	Bronze	-	Plastic	9.63"	Vertical	€6,703.54
H	1 1/2 LF800M4-QT	FNPT x FNPT	150 psi	Bronze	9 1/2"	Plastic	9 1/2"	Vertical	€1,731.61
I	1 1/4 LF288AM2	FNPT x FNPT	125 psi	Brass	3 3/4"	Silicone	-	-	€1,027.39
J	1 188A	FNPT x FNPT	125 psi	Brass	3.812"	Silicone	-	-	€431.73
E	2 800M4-QT	FNPT x FNPT	150 psi	Bronze	9 5/8"	Plastic	9.62"	Vertical	€1,650.21
E	1 1/4 800M4-QT	FNPT x FNPT	150 psi	Bronze	9"	Plastic	9"	Vertical	€1,424.81
E	1 1/2 800M4-QT	FNPT x FNPT	150 psi	Bronze	9 1/2"	Plastic	9 1/2"	Vertical	€1,525.85
I	1 1/2 LF288AM2	NPT	125 psi	-	4 1/2"	-	-	-	€1,316.65

WATTS -

774 Series Double Check Valve Backflow Preventer Assemblies

Style	Model	Body Finish	Max. Working Pressure	Min. Temp.	Inlet Type	Outlet Type	Outlet Size	Overall Height	Body Material	Price
A	774-NRS	-	-	-	-	-	-	16.69"	Stainless Steel	€8,232.36
B	774-OSY	-	-	-	-	-	-	19.88"	Stainless Steel	€6,422.70
C	774-OSY-FXG 10	Plain	175 psi	33°F	Flanged Joint	Grooved Joint	10"	-	Stainless Steel	€20,022.73	RFQ
D	774-OSY 2 1/2	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	2 1/2"	-	-	€3,983.23	RFQ
C	774-OSY-FXG 3	Plain	175 psi	33°F	Flanged Joint	Grooved Joint	3"	-	Stainless Steel	€4,559.45	RFQ
E	774-OSYXPIV 6	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	6"	-	Stainless Steel	€7,871.59	RFQ
D	774-OSY 6	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	6"	-	Stainless Steel	€7,356.79	RFQ
F	774-OSY-GXF 8	Plain	175 psi	33°F	Grooved Joint	Flanged Joint	8"	-	-	€14,537.75	RFQ
G	774-PIVXOSY 8	Plain	12.1 Bar	33°F	Flanged Joint	Flanged Joint	8"	-	-	€15,554.84	RFQ
D	774-OSY 10	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	-	-	Stainless Steel	€20,022.73	RFQ
G	774-PIVXOSY 3	Plain	12.1 Bar	33°F	Flanged Joint	Flanged Joint	3"	-	Stainless Steel	€4,877.55	RFQ
F	774-OSY-GXF 2 1/2	Plain	175 psi	33°F	Grooved Joint	Flanged Joint	2 1/2"	-	-	€3,983.23	RFQ
H	774-OSY-GXG 4	Plain	175 psi	33°F	Grooved Joint	Grooved Joint	4"	-	-	€5,035.20	RFQ
E	774-OSYXPIV 10	Plain	12.1 Bar	33°F	Flanged Joint	Flanged Joint	10"	-	-	€21,424.47	RFQ
E	774-OSYXPIV 3	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	3"	-	Stainless Steel	€4,877.55	RFQ
H	774-OSY-GXG 2 1/2	Plain	175 psi	33°F	Grooved Joint	Grooved Joint	2 1/2"	-	Stainless Steel	€4,262.25	RFQ
F	774-OSY-GXF 6	Plain	175 psi	33°F	Grooved Joint	Flanged Joint	6"	-	Stainless Steel	€7,356.79	RFQ
C	774-OSY-FXG 4	Stainless Steel	12.1 Bar	0.5°C	Flanged Joint	Grooved Joint	4"	-	Stainless Steel	€4,705.93	RFQ
C	774-OSY-FXG 8	Stainless Steel	12.1 Bar	0.5°C	Flanged Joint	Grooved Joint	8"	-	Stainless Steel	€14,537.75	RFQ
H	774-OSY-GXG 6	Stainless Steel	175 psi	33°F	Grooved Joint	Grooved Joint	6"	-	Stainless Steel	€7,356.79	RFQ
E	774-OSYXPIV 8	Stainless Steel	12.1 Bar	0.5°C	Flanged Joint	Flanged Joint	8"	-	Stainless Steel	€15,554.84	RFQ
G	774-PIVXOSY 4	Stainless Steel	12.1 Bar	0.5°C	Flanged Joint	Flanged Joint	4"	-	Stainless Steel	€5,035.20	RFQ
F	774-OSY-GXF 3	Stainless Steel	175 psi	33°F	Grooved Joint	Flanged Joint	3"	-	Stainless Steel	€4,559.45	RFQ
H	774-OSY-GXG 8	Stainless Steel	175 psi	33°F	Grooved Joint	Grooved Joint	8"	-	Stainless Steel	€15,554.84	RFQ
H	774-OSY-GXG 10	Stainless Steel	175 psi	33°F	Grooved Joint	Grooved Joint	10"	-	Stainless Steel	€21,424.47	RFQ

WATTS -

LFC300 Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Body Pattern	Meter Type	Max. Working Pressure	Min. Temp.	Inlet Type	Outlet Type	Outlet Size	Body Material	Price
A	LFC300N-BFG-CFM 2 1/2	-	CFM	175 psi	33°F	Grooved Joint	Grooved Joint	2 1/2"	Stainless Steel	€5,526.28	RFQ
A	LFC300N-BFG-CFM 6	-	CFM	175 psi	33°F	Grooved Joint	Grooved Joint	6"	Stainless Steel	€8,957.04	RFQ
B	LFC300N-OSY-CFM 2 1/2	-	CFM	175 psi	33°F	Flanged Joint	Flanged Joint	2 1/2"	Stainless Steel	€5,130.08	RFQ
C	LFC300N-DOSY-LM 2 1/2	N Pattern	No Meter	12.06 Bar	0.5°C	Flanged Joint	Flanged Joint	2 1/2"	Stainless Steel	€5,664.42	RFQ
B	LFC300N-OSY-CFM 6	N Pattern	CFM	-	-	-	-	-	Stainless Steel	€8,551.05	RFQ
B	LFC300N-OSY-CFM 8	N Pattern	CFM	-	-	-	-	-	Stainless Steel	€14,767.95	RFQ
C	LFC300N-DOSY-LM 10	N Pattern	No Meter	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€22,962.83	RFQ
C	LFC300N-DOSY-LM 8	N Pattern	No Meter	12.06 Bar	0.5°C	Flanged Joint	Flanged Joint	8"	Stainless Steel	€14,649.37	RFQ
A	LFC300N-BFG-CFM 4	N Pattern	CFM	-	-	-	-	-	Stainless Steel	€6,999.60	RFQ
B	LFC300N-OSY-CFM 4	N Pattern	CFM	175 psi	33°F	-	-	-	Stainless Steel	€6,603.38	RFQ
B	LFC300N-DOSY-C 8	N Pattern	CFM	12.06 Bar	0.5°C	Flanged Joint	Flanged Joint	8"	Stainless Steel	€14,767.95	RFQ
B	LFC300N-DOSY-C 3	N Pattern	-	175 psi	33°F	Flanged Joint	Flanged Joint	-	-	€6,395.48	RFQ
B	LFC300N-OSY-GPM 8	N Pattern	GPM	175 psi	33°F	-	-	-	Stainless Steel	€14,767.95	RFQ
A	LFC300N-BFG-CFM 3	N Pattern	-	-	-	-	-	-	Stainless Steel	€6,053.67	RFQ
C	LFC300N-DOSY-LM 3	N Pattern	No Meter	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€6,260.17	RFQ
A	LFC300N-BFG-GPM 6	N Pattern	GPM	-	-	-	-	-	Stainless Steel	€8,957.04	RFQ
B	LFC300N-OSY-CFM 10	N Pattern	CFM	175 psi	33°F	-	-	-	Stainless Steel	€23,080.96	RFQ
C	LFC300N-DOSY-LM 4	N Pattern	No Meter	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€7,328.87	RFQ
A	LFC300N-BFG-CFM 8	N Pattern	CFM	175 psi	33°F	-	-	-	Stainless Steel	€15,172.54	RFQ
B	LFC300N-OSY-GPM 6	N Pattern	-	-	-	-	-	-	Stainless Steel	€8,551.05	RFQ
C	LFC300N-DOSY-LM 6	N Pattern	No Meter	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€9,530.45	RFQ
D	LFC300-PIVXOSY-GPM 6	Straight	GPM	175 psi	33°F	-	-	-	Stainless Steel	€7,762.79	RFQ
D	LFC300-PIVXOSY-GPM 8	Straight	GPM	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€13,361.61	RFQ
E	LFC300-OSY-GPM 3	Straight	GPM	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€5,291.91	RFQ
F	LFC300-OSY-LM 6	Straight	No Meter	175 psi	33°F	Flanged Joint	Flanged Joint	-	Stainless Steel	€7,652.54	RFQ

WATTS -

C400 Series Reduced Pressure Zone Backflow Preventer Assemblies

Style	Model	Body Pattern	Body Material	Seat Material	Meter Type	Bypass Size	Inlet Thread Type	Strainer	Max. Working Pressure	Price
A	C400Z-DNRS 6	-	-	-	-	-	-	-	-	€19,056.71	RFQ
B	C400N-NRS 8	-	-	-	-	-	-	-	-	€15,596.96	RFQ
A	C400Z-DNRS 2 1/2	-	-	-	-	-	-	-	-	€8,548.23	RFQ
A	C400Z-DNRS 8	-	-	-	-	-	-	-	-	€33,153.60	RFQ
A	C400N-DNRS 2 1/2	-	-	-	-	-	-	-	-	€8,548.23	RFQ
C	C400Z-BFG 3	-	Stainless Steel	Rubber	No Meter	Not Applicable	Not Applicable	No	175 psi	€5,330.95	RFQ
A	C400N-DNRS 8	-	-	-	-	-	-	-	-	€33,153.60	RFQ
A	C400N-DNRS 4	-	-	-	-	-	-	-	-	€12,771.46	RFQ
A	C400Z-DNRS 10	-	-	-	-	-	-	-	-	€52,454.48	RFQ
A	C400N-DNRS 6	-	-	-	-	-	-	-	-	€19,056.71	RFQ
A	C400N-DNRS 10	-	-	-	-	-	-	-	-	€52,454.48	RFQ
B	C400N-NRS 10	N Pattern	Stainless Steel	Rubber	No Meter	Not Applicable	Not Applicable	No	175 psi	€24,676.23	RFQ
B	C400N-NRS 2 1/2	N Pattern	Stainless Steel	Rubber	No Meter	Not Applicable	Not Applicable	No	175 psi	€4,023.70	RFQ
D	C400-OSY-FXG 10	Straight	Stainless Steel	-	No Meter	Not Applicable	Not Applicable	-	-	€21,600.95	RFQ

WATTS -

LF757DCDA Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Body Finish	Max. Working Pressure	Min. Temp.	Inlet Type	Outlet Type	Body Style	Outlet Size	Body Pattern	Price
A	LF757NDCDA-OSY-GPM 3	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	N Pattern	3"	-	€7,928.79	RFQ
A	LF757NDCDA-OSY-GPM 10	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	N Pattern	10"	N Pattern	€24,834.19	RFQ
B	LF757DCDA-OSYXPIV-GPM 4	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	Inline	4"	-	€6,865.67	RFQ
C	LF757DCDA-OSY-GPM 6	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	Inline	6"	-	€8,457.87	RFQ
C	LF757DCDA-OSY-LM 4	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	Inline	4"	Inline	€6,423.40	RFQ
B	LF757DCDA-OSYXPIV-CFM 6	Plain	12.1 Bar	33°F	Flanged Joint	Flanged Joint	Inline	6"	-	€8,912.40	RFQ
D	LF757DCDA-PIVXOSY-GPM 4	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	Inline	4"	Inline	€6,537.80	RFQ
E	LF757NDCDA-BFG-CFM 4	Plain	175 psi	33°F	Grooved Joint	Grooved Joint	N Pattern	4"	-	€9,657.43	RFQ
A	LF757NDCDA-OSY-GPM 8	Plain	12.1 Bar	33°F	Flanged Joint	Flanged Joint	N Pattern	8"	-	€21,969.51	RFQ
E	LF757NDCDA-BFG-GPM 3	Plain	12.1 Bar	33°F	Grooved Joint	Grooved Joint	N Pattern	3"	-	€8,309.68	RFQ
A	LF757N-DCDA-DOSY-CFM 3	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	N Pattern	3"	N Pattern	€8,957.04	RFQ
A	LF757N-DCDA-DOSY-GPM 6	Plain	175 psi	33°F	Flanged Joint	Flanged Joint	N Pattern	6"	N Pattern	€14,558.68	RFQ
B	LF757DCDA-OSYXPIV-GPM 6	Stainless Steel	12.1 Bar	1°C	Flanged Joint	Flanged Joint	Inline	6"	-	€8,912.40	RFQ
C	LF757DCDA-OSY-LM 3	Stainless Steel	12.1 Bar	1°C	Flanged Joint	Flanged Joint	Inline	3"	Inline	€6,039.73	RFQ
A	LF757N-DCDA-DOSY-CFM 2 1/2	Stainless Steel	175 psi	33°F	Flanged Joint	Flanged Joint	N Pattern	2 1/2"	N Pattern	€8,511.96	RFQ
A	LF757N-DCDA-DOSY-GPM 3	Stainless Steel	12.1 Bar	0.5°C	Flanged Joint	Flanged Joint	N Pattern	3"	N Pattern	€8,957.04	RFQ
C	LF757DCDA-OSY-GPM 2 1/2	Stainless Steel	12.1 Bar	1°C	Flanged Joint	Flanged Joint	Inline	2 1/2"	-	€5,014.57	RFQ
A	LF757NDCDA-OSY-GPM 2 1/2	Stainless Steel	12.1 Bar	1°C	Flanged Joint	Flanged Joint	N Pattern	2 1/2"	-	€7,533.96	RFQ
B	LF757DCDA-OSYXPIV-GPM 8	Stainless Steel	12.1 Bar	33°F	Flanged Joint	Flanged Joint	Inline	8"	Inline	€16,106.41	RFQ
E	LF757NDCDA-BFG-CFM 6	Stainless Steel	12.1 Bar	33°F	Grooved Joint	Grooved Joint	N Pattern	6"	N Pattern	€13,275.13	RFQ
A	LF757N-DCDA-DOSY-CFM 8	Stainless Steel	12.1 Bar	0.5°C	Flanged Joint	Flanged Joint	N Pattern	8"	N Pattern	€21,969.51	RFQ
A	LF757NDCDA-OSY-CFM 10	Stainless Steel	175 psi	33°F	Flanged Joint	Flanged Joint	N Pattern	-	N Pattern	€24,834.19	RFQ
C	LF757DCDA-OSY-LM 8	Stainless Steel	175 psi	33°F	Flanged Joint	Flanged Joint	Inline	8"	Inline	€15,226.97	RFQ
C	LF757DCDA-OSY-LM 6	Stainless Steel	175 psi	33°F	Flanged Joint	Flanged Joint	Inline	6"	Inline	€8,373.84	RFQ
F	LF757DCDA-OSY-GPM 4	Stainless Steel	12.1 Bar	33°F	Flanged Joint	Flanged Joint	Inline	4"	Inline	€4,670.23	RFQ

WATTS -

LFC500 Series Reduced Pressure Detector Backflow Preventer Assemblies

Style	Model	Body Pattern	Max. Working Pressure	Min. Temp.	Meter Type	Seat Material	Body Material	Bypass Size	Strainer	Price
A	LFC500Z-OSY-G 10	-	-	-	-	-	-	-	-	€28,730.89	RFQ
A	LFC500Z-DOSY-C 10	-	-	-	-	-	-	-	-	€28,730.89	RFQ
A	LFC500N-OSY-LM 10	-	-	-	-	-	-	-	-	€28,622.07	RFQ
A	LFC500-DOSY-LM 10	-	-	-	-	-	-	-	-	€25,055.99	RFQ
B	LFC500N-BFG-CFM 2 1/2	N Pattern	175 psi	33°F	CFM	Rubber	Stainless Steel	3/4"	No	€6,562.91	RFQ
C	LFC500N-OSY-CFM 10	N Pattern	175 psi	33°F	CFM	Rubber	Stainless Steel	3/4"	No	€28,730.89	RFQ
C	LFC500N-DOSY-C 6	N Pattern	175 psi	33°F	-	Rubber	Stainless Steel	3/4"	-	€12,488.24	RFQ
C	LFC500N-DOSY-G 2 1/2	N Pattern	12.1 Bar	0.5°C	GPM	Rubber	Stainless Steel	3/4"	No	€6,449.91	RFQ
D	LFC500Z-DOSY-C 8	Z Pattern	175 psi	33°F	-	Rubber	-	3/4"	No	€19,215.86	RFQ
D	LFC500Z-DOSY-C 4	Z Pattern	175 psi	33°F	-	Rubber	Stainless Steel	3/4"	No	€8,426.86	RFQ

WATTS -

LFM300 Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Body Pattern	Max. Working Pressure	Min. Temp.	Inlet Type	Outlet Type	Meter Type	Outlet Size	Body Material	Price
A	LFM300-BFG-LM 3	-	-	-	-	-	-	-	-	€7,010.76	RFQ
A	LFM300-BFG-LM 8	-	-	-	-	-	-	-	-	€17,005.82	RFQ
A	LFM300-BFG-LM 4	-	-	-	-	-	-	-	-	€8,998.90	RFQ
A	LFM300N-BFG-LM 4	-	-	-	-	-	-	-	-	€8,359.90	RFQ
A	LFM300N-OSY-LM 2 1/2	-	-	-	-	-	-	-	-	€6,117.84	RFQ
A	LFM300-OSY-LM 6	-	-	-	-	-	-	-	-	€9,089.59	RFQ
A	LFM300-DOSY-LM 2 1/2	-	-	-	-	-	-	-	-	€6,505.71	RFQ
A	LFM300N-OSY-LM 8	-	-	-	-	-	-	-	-	€17,854.10	RFQ
A	LFM300N-BFG-LM 6	-	-	-	-	-	-	-	-	€10,740.07	RFQ
A	LFM300N-OSY-LM 3	-	-	-	-	-	-	-	-	€6,762.43	RFQ
A	LFM300-OSY-LM 3	-	-	-	-	-	-	-	-	€6,575.46	RFQ
A	LFM300-OSY-LM 2 1/2	-	-	-	-	-	-	-	-	€5,755.11	RFQ
A	LFM300N-OSY-LM 4	-	-	-	-	-	-	-	-	€7,914.85	RFQ
A	LFM300N-DOSY-LM 4	-	-	-	-	-	-	-	-	€8,943.09	RFQ
A	LFM300N-DOSY-LM 3	-	-	-	-	-	-	-	-	€7,638.58	RFQ
A	LFM300-BFG-LM 2 1/2	-	-	-	-	-	-	-	-	€6,194.57	RFQ
A	LFM300-OSY-LM 4	-	-	-	-	-	-	-	-	€8,564.99	RFQ
A	LFM300-DOSY-LM 4	-	-	-	-	-	-	-	-	€9,672.78	RFQ
A	LFM300-OSY-LM 8	-	-	-	-	-	-	-	-	€16,556.56	RFQ
B	LFM300N-DOSY-C 3	N Pattern	175 psi	33°F	Flanged Joint	Flanged Joint	-	-	Stainless Steel	€7,789.28	RFQ
C	LFM300N-BFG-GPM 6	N Pattern	175 psi	33°F	Grooved Joint	Grooved Joint	GPM	-	Stainless Steel	€10,874.02	RFQ
B	LFM300N-OSY-GPM 8	N Pattern	175 psi	33°F	Flanged Joint	Flanged Joint	GPM	-	-	€17,990.60	RFQ
B	LFM300N-OSY-CFM 4	N Pattern	12.06 Bar	0.5°C	Flanged Joint	Flanged Joint	CFM	4"	Stainless Steel	€8,047.37	RFQ
C	LFM300N-BFG-GPM 8	N Pattern	175 psi	33°F	Grooved Joint	Grooved Joint	GPM	-	Stainless Steel	€18,441.70	RFQ
B	LFM300N-OSY-CFM 3	N Pattern	175 psi	33°F	Flanged Joint	Flanged Joint	CFM	-	Stainless Steel	€6,892.18	RFQ

WATTS -

774DCDA Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Seat Material	Body Finish	Min. Temp.	Inlet Type	Outlet Size	Max. Working Pressure	Outlet Type	Body Pattern	Price
A	SR774DCDA-OSY-GPM 2 1/2	-	Plain	33°F	Flanged Joint	2 1/2"	175 psi	Flanged Joint	Straight	€6,244.82	RFQ
B	SR774DCDA-LF-CFM 8	-	Stainless Steel	33°F	Flanged Joint	8"	12.1 Bar	Flanged Joint	Straight	€19,538.56	RFQ
B	SR774DCDA-LF-GPM 8	-	Stainless Steel	33°F	Flanged Joint	8"	12.1 Bar	Flanged Joint	Straight	€19,571.84	RFQ
B	SR774DCDA-LF-CFM 6	-	Stainless Steel	33°F	Flanged Joint	6"	12.1 Bar	Flanged Joint	-	€12,647.21	RFQ
A	SR774DCDA-OSY-CFM 4	-	Stainless Steel	0.5°C	Flanged Joint	4"	12.1 Bar	Flanged Joint	Straight	€7,602.33	RFQ
A	SR774DCDA-OSY-CFM 3	-	Stainless Steel	33°F	Flanged Joint	3"	175 psi	Flanged Joint	Straight	€8,408.74	RFQ
A	SR774DCDA-OSY-GPM 8	-	Stainless Steel	33°F	Flanged Joint	8"	175 psi	Flanged Joint	Straight	€17,834.02	RFQ
A	SR774DCDA-OSY-GPM-SS 8	-	Stainless Steel	0.5°C	Flanged Joint	8"	12.1 Bar	Flanged Joint	Straight	€21,401.70	RFQ
A	SR774DCDA-OSY-GPM-SS 6	-	Stainless Steel	33°F	Flanged Joint	6"	175 psi	Flanged Joint	Straight	€11,842.28	RFQ
A	SR774DCDA-OSY-CFM 2 1/2	-	Stainless Steel	33°F	Flanged Joint	2 1/2"	175 psi	Flanged Joint	Straight	€6,244.82	RFQ
A	SR774DCDA-OSY-GPM 10	-	Stainless Steel	0.5°C	Flanged Joint	10"	12.1 Bar	Flanged Joint	Straight	€24,370.24	RFQ
A	SR774DCDA-OSY-CFM 10	-	Plain	33°F	Flanged Joint	10"	175 psi	Flanged Joint	Straight	€24,370.24	RFQ
A	SR774DCDA-OSY-GPM 6	-	Stainless Steel	33°F	Flanged Joint	6"	175 psi	Flanged Joint	Straight	€9,868.10	RFQ
A	SR774DCDA-OSY-GPM 3	-	Stainless Steel	0.5°C	Flanged Joint	3"	12.1 Bar	Flanged Joint	Straight	€8,408.74	RFQ
A	SR774DCDA-OSY-GPM-SS 4	-	Stainless Steel	33°F	Flanged Joint	4"	175 psi	Flanged Joint	Straight	€9,123.07	RFQ
A	SR774DCDA-OSY-GPM 4	-	Stainless Steel	33°F	Flanged Joint	4"	175 psi	Flanged Joint	Straight	€7,602.33	RFQ
A	SR774DCDA-OSY-CFM 6	-	Plain	33°F	Flanged Joint	6"	175 psi	Flanged Joint	Straight	€9,866.70	RFQ
A	SR774DCDA-OSY-CFM 8	-	Stainless Steel	33°F	Flanged Joint	8"	175 psi	Flanged Joint	Straight	€17,834.02	RFQ
C	774DCDA-PIVXOSY-GPM 10	Engineered Plastic	Stainless Steel	33°F	Flanged Joint	10"	175 psi	Flanged Joint	Not Applicable	€23,661.55	RFQ
D	774DCDA-OSY-FXG-CFM 2 1/2	Engineered Plastic	Plain	33°F	Flanged Joint	2 1/2"	175 psi	Grooved Joint	-	€5,668.60	RFQ
A	774DCDA-RH-OSY-GPM 8	Engineered Plastic	Stainless Steel	33°F	Flanged Joint	8"	175 psi	Flanged Joint	Not Applicable	€16,181.85	RFQ
E	774DCDA-OSY-LM 6	Engineered Plastic	Plain	33°F	Flanged Joint	6"	175 psi	Flanged Joint	-	€8,860.78	RFQ
F	774DCDA-LF-LM 8	Engineered Plastic	Plain	33°F	Flanged Joint	8"	175 psi	-	Not Applicable	€12,205.02	RFQ
G	774DCDA-OSYXPIV-CFM 10	Engineered Plastic	Plain	33°F	Flanged Joint	10"	175 psi	Flanged Joint	Not Applicable	€23,661.55	RFQ
H	774DCDA-OSY-GPM 6	Engineered Plastic	Stainless Steel	0.5°C	Flanged Joint	6"	12.1 Bar	Flanged Joint	Inline	€8,952.85	RFQ

WATTS -

757DCDA Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Body Finish	Min. Temp.	Inlet Type	Outlet Size	Outlet Type	Body Style	Max. Working Pressure	Body Pattern	Price
A	757DCDA-OSY-FXG-GPM 10	Plain	33°F	Flanged Joint	10"	Grooved Joint	Inline	175 psi	Inline	€16,808.00	RFQ
A	757DCDA-OSY-FXG-CFM 10	Plain	33°F	Flanged Joint	10"	Grooved Joint	Inline	175 psi	Inline	€16,808.00	RFQ
B	757DCDA-BFG-LM 8	Plain	33°F	Grooved Joint	8"	Grooved Joint	Inline	12.1 Bar	-	€14,507.06	RFQ
C	757DCDA-PIVXOSY-CFM 4	Plain	33°F	Flanged Joint	4"	Flanged Joint	Inline	175 psi	Inline	€6,084.36	RFQ
D	757N-DCDA-DOSY-LM 8	Plain	33°F	Flanged Joint	8"	Flanged Joint	N Pattern	175 psi	N Pattern	€20,323.02	RFQ
E	757DCDA-OSYXPIV-CFM 8	Plain	33°F	Flanged Joint	8"	Flanged Joint	Inline	175 psi	Inline	€14,982.80	RFQ
F	757DCDA-PIVXOSY-GPM 8	Plain	33°F	Flanged Joint	8"	Flanged Joint	Inline	175 psi	Inline	€14,269.88	RFQ
G	757DCDA-OSY-LM 8	Plain	33°F	Flanged Joint	8"	Flanged Joint	Inline	175 psi	-	€14,165.22	RFQ
H	757NDCDA-BFG-GPM 6	Plain	33°F	Grooved Joint	6"	Grooved Joint	N Pattern	175 psi	N Pattern	€12,348.71	RFQ
I	757NDCDA-BFG-CFM	Plain	33°F	Grooved Joint	8"	Grooved Joint	N Pattern	175 psi	-	€20,801.19	RFQ
D	757N-DCDA-DOSY-LM 3	Plain	33°F	Flanged Joint	3"	Flanged Joint	N Pattern	175 psi	N Pattern	€8,206.43	RFQ
J	757DCDA-OSY-GPM 3	Plain	33°F	Flanged Joint	3"	Flanged Joint	Inline	175 psi	Inline	€4,783.66	RFQ
G	757DCDA-DOSY-LM 4	Plain	33°F	Flanged Joint	4"	Flanged Joint	Inline	-	Inline	€6,751.27	RFQ
E	757DCDA-OSYXPIV-GPM 8	Plain	33°F	Flanged Joint	8"	Flanged Joint	Inline	175 psi	Inline	€14,982.80	RFQ
K	757NDCDA-OSY-GPM 10	Plain	33°F	Flanged Joint	10"	Flanged Joint	N Pattern	175 psi	N Pattern	€23,100.88	RFQ
A	757DCDA-OSY-FXG-CFM 8	Plain	33°F	Flanged Joint	8"	Grooved Joint	Inline	175 psi	Inline	€14,269.88	RFQ
H	757NDCDA-BFG-GPM 3	Plain	0.5°C	Grooved Joint	3"	Grooved Joint	N Pattern	12.1 Bar	N Pattern	€7,727.88	RFQ
J	757DCDA-OSY-CFM 2 1/2	Plain	0.5°C	Flanged Joint	2 1/2"	Flanged Joint	Inline	12.1 Bar	Inline	€4,664.74	RFQ
I	757NDCDA-BFG-CFM 3	Plain	0.5°C	Grooved Joint	3"	Grooved Joint	N Pattern	12.1 Bar	N Pattern	€7,727.88	RFQ
K	757NDCDA-OSY-CFM 10	Plain	0.5°C	Flanged Joint	10"	Flanged Joint	N Pattern	12.1 Bar	N Pattern	€23,100.88	RFQ
L	757NDCDA-BFG-LM 4	Plain	33°F	Grooved Joint	4"	Grooved Joint	N Pattern	175 psi	-	€8,869.13	RFQ
J	757DCDA-OSY-GPM 4	Plain	0.5°C	Flanged Joint	4"	Flanged Joint	Inline	12.1 Bar	Inline	€4,344.40	RFQ
M	757NDCDA-OSY-LM 3	Plain	33°F	Flanged Joint	3"	Flanged Joint	N Pattern	175 psi	-	€7,261.91	RFQ
A	757DCDA-OSY-FXG-GPM 4	Plain	33°F	Flanged Joint	4"	Grooved Joint	Inline	175 psi	Inline	€6,084.36	RFQ
A	757DCDA-OSY-FXG-GPM 8	Plain	33°F	Flanged Joint	8"	Grooved Joint	Inline	175 psi	Inline	€14,269.88	RFQ

WATTS -

3000SS Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Seat Material	Meter Type	Min. Temp.	Max. Working Pressure	Inlet Type	Outlet Type	Outlet Size	Body Material	Price
A	3000SS-NRS-CFM 4	-	-	-	-	-	-	-	-	€6,787.54	RFQ
B	3000SS-OSY-LM 10	-	No Meter	33°F	175 psi	Flanged Joint	Flanged Joint	-	Stainless Steel	€21,053.97	RFQ
C	3000SS-PIVXOSY-CFM 8	-	CFM	33°F	175 psi	Flanged Joint	Flanged Joint	-	-	€16,560.34	RFQ
D	3000SS-DOSY-GXF-CFM 8	-	CFM	33°F	175 psi	Grooved Joint	Flanged Joint	-	-	€15,478.10	RFQ
E	3000SS-DOSY-GXG-GPM 10	-	GPM	33°F	175 psi	Grooved Joint	Grooved Joint	-	-	€21,151.67	RFQ
F	3000SS-OSY-CFM 2 1/2	-	-	-	-	-	-	-	-	€5,457.93	RFQ
G	3000SS-LG-LM 4	-	-	-	-	-	-	-	-	€4,922.18	RFQ
B	3000SS-OSY-LM 4	-	-	-	-	-	-	-	Stainless Steel	€6,501.53	RFQ
G	3000SS-LG-LM 2 1/2	-	-	-	-	-	-	-	Stainless Steel	€4,104.60	RFQ
B	3000SS-DOSY-LM 12	-	-	33°F	175 psi	Flanged Joint	Flanged Joint	-	-	€27,195.83	RFQ
F	3000SS-OSY-CFM 10	-	CFM	-	-	-	-	-	Stainless Steel	€21,151.67	RFQ
G	3000SS-LG-LM 8	-	-	33°F	175 psi	Flanged Joint	Flanged Joint	-	-	€11,665.07	RFQ
A	3000SS-NRS-GPM 4	-	GPM	-	-	-	-	-	Stainless Steel	€6,787.54	RFQ
H	3000SS-SR-LG-GPM 8	-	-	-	-	-	-	-	Stainless Steel	€11,979.00	RFQ
E	3000SS-DOSY-GXG-CFM 4	-	CFM	33°F	175 psi	Grooved Joint	Grooved Joint	-	Stainless Steel	€6,597.80	RFQ
H	3000SS-LG-GPM 6	-	-	-	-	-	-	-	-	€6,320.16	RFQ
H	3000SS-SR-LG-GPM 6	-	GPM	-	-	-	-	-	Stainless Steel	€4,563.62	RFQ
H	3000SS-LG-GPM 10	-	-	-	-	-	-	-	-	€15,133.50	RFQ
H	3000SS-LG-CFM 4	Molded Thermoplastic, Rubber	CFM	33°F	175 psi	-	-	-	Stainless Steel	€5,018.47	RFQ
I	3000SS-NRS-LM 10	Molded Thermoplastic, Rubber	No Meter	33°F	175 psi	Flanged Joint	Flanged Joint	-	Stainless Steel	€21,087.04	RFQ
H	3000SS-SR-LG-GPM 4	Molded Thermoplastic, Rubber	GPM	-	-	-	-	-	Stainless Steel	€3,458.64	RFQ
E	3000SS-DOSY-GXG-CFM 8	Molded Thermoplastic, Rubber	CFM	33°F	175 psi	Grooved Joint	Grooved Joint	-	Stainless Steel	€15,478.10	RFQ
A	3000SS-NRS-GPM 8	Molded Thermoplastic, Rubber	GPM	33°F	175 psi	Flanged Joint	Flanged Joint	8"	Stainless Steel	€15,805.90	RFQ
E	3000SS-DOSY-GXG-CFM 6	Molded Thermoplastic, Rubber	CFM	0.5°C	12 Bar	Grooved Joint	Grooved Joint	6"	Stainless Steel	€8,551.05	RFQ
C	3000SS-PIVXOSY-GPM 8	Molded Thermoplastic, Rubber	GPM	33°F	175 psi	Flanged Joint	Flanged Joint	-	Stainless Steel	€15,478.10	RFQ

WATTS -

C500 Reduced Pressure Detector Backflow Preventer Assemblies

Style	Model	Body Pattern	Meter Type	Seat Material	Body Material	Strainer	Body Finish	Bypass Size	Inlet Thread Type	Price
A	C500Z-OSY-CFM 2 1/2	-	-	Rubber	-	No	-	-	-	€5,385.38	RFQ
B	C500N-OSY-LM 6	N Pattern	No Meter	Rubber	Stainless Steel	No	Stainless Steel	3/4"	Not Applicable	€10,325.72	RFQ
C	C500N-OSY-GPM 3	N Pattern	GPM	Rubber	Stainless Steel	No	Stainless Steel	3/4"	Not Applicable	€5,990.89	RFQ
A	C500Z-OSY-GPM 2 1/2	Z Pattern	GPM	Rubber	Stainless Steel	No	Stainless Steel	3/4"	Not Applicable	€5,385.38	RFQ

WATTS -

709DCDA Series Double Check Detector Backflow Preventer Assemblies

Style	Model	Min. Temp.	Meter Type	Bypass Size	Max. Working Pressure	Outlet Size	Body Material	Seat Material	Connection Type	Price
A	709DCDA-OSY-GPM	-	-	-	-	-	Cast Iron	Bronze	Flange	€19,936.43
A	709DCDA-OSY-CFM	-	-	-	-	-	Cast Iron	Bronze	Flange	€18,982.90
B	SR 709DCDA-OSY-CFM 6	0.5°C	CFM	3/4"	12.1 Bar	6"	Cast Iron	Bronze	-	€15,363.69	RFQ
B	709DCDA-OSY 4 3/4GPM	0.5°C	GPM	3/4"	12.1 Bar	4"	Cast Iron	Bronze	-	€9,972.73	RFQ
B	709DCDA-OSY 8 3/4GPM	0.5°C	GPM	3/4"	12.1 Bar	8"	Cast Iron	Bronze	-	€26,700.60	RFQ
B	709DCDA-OSY 3 3/4CFM	0.5°C	CFM	3/4"	12.1 Bar	3"	Cast Iron	Bronze	-	€8,784.05	RFQ
B	709DCDA-OSY-CFM 8 3/4	0.5°C	CFM	3/4"	12.1 Bar	8"	Cast Iron	Bronze	-	€26,700.60	RFQ
B	709DCDA-OSY 3 3/4GPM	0.5°C	GPM	3/4"	12.1 Bar	3"	Cast Iron	Bronze	-	€9,399.32	RFQ
B	SR 709DCDA-OSY-GPM 10	0.5°C	GPM	3/4"	12.1 Bar	10"	Cast Iron	Bronze	-	€38,738.78	RFQ
B	709DCDA-OSY-CFM 3	0.5°C	CFM	1/2"	175 psi	3"	Cast Iron	Bronze	-	€8,784.05	RFQ
B	SR 709DCDA-OSY-CFM 10	0.5°C	CFM	3/4"	12.1 Bar	10"	Cast Iron	Bronze	-	€38,738.78	RFQ
B	SR 709DCDA-OSY-GPM 4	0.5°C	GPM	3/4"	12.1 Bar	4"	Cast Iron	Bronze	-	€10,473.61	RFQ
B	709DCDA-OSY-GPM 6	0.5°C	GPM	1/2"	12.1 Bar	6"	Cast Iron	Bronze	-	€13,674.14	RFQ
B	709DCDA-OSY-GPM 4	0.5°C	GPM	1/2"	12.1 Bar	4"	Cast Iron	Bronze	-	€9,319.78	RFQ
B	709DCDA-OSY-CFM 8	0.5°C	CFM	1/2"	175 psi	8"	Cast Iron	Bronze	-	€26,700.60	RFQ
B	SR 709DCDA-OSY-CFM 3	33°F	CFM	3/4"	175 psi	3"	Cast Iron	Bronze	-	€9,868.10	RFQ
B	709DCDA-OSY 6 3/4CFM	33°F	CFM	3/4"	175 psi	6"	Cast Iron	Bronze	-	€13,674.14	RFQ
B	709DCDA-OSY-CFM 4	33°F	CFM	1/2"	12.1 Bar	-	Cast Iron	Bronze	-	€9,319.78	RFQ
B	709DCDA-OSY-GPM 8	33°F	GPM	1/2"	12.1 Bar	8"	Cast Iron	Bronze	-	€26,700.60	RFQ
B	709DCDA-OSY-CFM 6	33°F	CFM	1/2"	12.1 Bar	6"	Cast Iron	Bronze	-	€13,674.14	RFQ
B	709DCDA-OSY 6 3/4GPM	33°F	GPM	3/4"	175 psi	6"	Cast Iron	Bronze	-	€14,631.23	RFQ
B	709DCDA-OSY 10 3/4CFM	33°F	CFM	3/4"	175 psi	10"	Cast Iron	Bronze	-	€34,480.10	RFQ
B	709DCDA-OSY 4 3/4CFM	33°F	CFM	3/4"	175 psi	4"	Cast Iron	Bronze	-	€9,319.78	RFQ
B	SR 709DCDA-OSY-CFM 4	33°F	CFM	3/4"	175 psi	4"	Cast Iron	Bronze	-	€10,473.61	RFQ
B	709DCDA-OSY-CFM 10	33°F	CFM	1/2"	12.1 Bar	10"	Cast Iron	Bronze	-	€34,480.10	RFQ

WATTS -

LF957RPDA Series Reduced Pressure Detector backflow Preveneter Assemblies

Style	Model	Body Finish	Min. Temp.	Type	Outlet Size	Inlet Type	Body Style	Body Pattern	Max. Working Pressure	Price
A	DLF957RPDA-OSY-GPM 2 1/2	-	-	-	-	-	-	-	-	€5,333.76	RFQ
A	LF957RPDA-OSY-LM 10	-	-	-	-	-	-	-	-	€18,887.89	RFQ
B	LF957RPDA-DOSY-LM 6	Plain	33°F	Valve To Accessory	6"	Grooved Joint	Straight	-	175 psi	€11,023.29	RFQ
C	LF957RPDA-DOSY-GPM 3	Plain	33°F	Kit	3"	Grooved Joint	Straight	Straight	-	€5,921.13	RFQ
D	LF957ZRPDA-BFG-GPM 2 1/2	Plain	33°F	Kit	2 1/2"	Grooved Joint	Z Pattern	Z Pattern	175 psi	€6,613.14	RFQ
E	LF957NRPDA-DOSY-GPM 3	Plain	33°F	Kit	3"	Grooved Joint	-	N Pattern	175 psi	€7,693.01	RFQ
F	LF957ZRPDA-DOSY-GPM 3	Plain	33°F	Kit	3"	Grooved Joint	Z Pattern	Z Pattern	175 psi	€7,693.01	RFQ
G	LF957NRPDA-BFG-GPM 4	Plain	33°F	Kit	4"	Grooved Joint	N Pattern	N Pattern	175 psi	€9,729.98	RFQ
F	LF957ZRPDA-DOSY-GPM 8	Plain	33°F	Kit	8"	Grooved Joint	Z Pattern	Z Pattern	175 psi	€20,374.26	RFQ
E	LF957NRPDA-DOSY-CFM 2 1/2	Plain	0.5°C	Kit	2 1/2"	Grooved Joint	N Pattern	N Pattern	12.06 Bar	€7,074.94	RFQ
H	LF957ZRPDA-OSY-GPM 3	Plain	33°F	Kit	3"	Grooved Joint	Z Pattern	Z Pattern	175 psi	€6,809.87	RFQ
E	LF957NRPDA-DOSY-CFM 3	Plain	33°F	Kit	3"	Grooved Joint	N Pattern	N Pattern	175 psi	€7,693.01	RFQ
C	LF957RPDA-DOSY-CFM 3	Plain	33°F	Kit	3"	Grooved Joint	Straight	Straight	175 psi	€5,921.13	RFQ
C	LF957-RPDA-OSY-CFM 2 1/2	Plain	33°F	Valve To Accessory	2 1/2"	Grooved Joint	-	-	12.1 Bar	€4,719.90	RFQ
H	LF957NRPDA-OSY-GPM 8	Plain	33°F	Kit	8"	Flanged Joint	N Pattern	N Pattern	175 psi	€20,374.26	RFQ
I	LF957NRPDA-OSY-LM 3	Plain	33°F	Kit	3"	Flanged Joint	N Pattern	N Pattern	175 psi	€6,698.26	RFQ
B	LF957RPDA-DOSY-LM 3	Plain	33°F	Valve To Accessory	3"	Grooved Joint	Straight	-	12.1 Bar	€5,801.14	RFQ
H	LF957NRPDA-OSY-GPM 3	Plain	33°F	Kit	3"	Flanged Joint	N Pattern	N Pattern	175 psi	€6,809.87	RFQ
C	LF957RPDA-DOSY-CFM 2 1/2	Plain	33°F	Kit	2 1/2"	Grooved Joint	Straight	Straight	175 psi	€5,333.76	RFQ
D	LF957ZRPDA-DOSY-CFM 4	Plain	33°F	Kit	4"	Grooved Joint	Z Pattern	Z Pattern	175 psi	€10,599.18	RFQ
F	LF957RPDA-DOSY-GPM 8	Stainless Steel	33°F	Kit	8"	Grooved Joint	Straight	Straight	-	€16,244.45	RFQ
C	LF957RPDA-DOSY-GPM 6	Stainless Steel	33°F	Kit	6"	Grooved Joint	Straight	Straight	-	€11,144.67	RFQ
E	LF957NRPDA-DOSY-GPM 2 1/2	Stainless Steel	33°F	Kit	2 1/2"	Grooved Joint	N Pattern	N Pattern	175 psi	€7,074.94	RFQ
C	LF957RPDA-DOSY-GPM 2 1/2	Stainless Steel	0.5°C	Kit	2 1/2"	Grooved Joint	Straight	Straight	12.06 Bar	€5,333.76	RFQ
C	LF957RPDA-DOSY-GPM 4	Stainless Steel	33°F	Kit	4"	Grooved Joint	Straight	Straight	175 psi	€7,734.87	RFQ

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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.

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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

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709DCDA Series Double Check Detector Backflow Preventer Assemblies

LF957RPDA Series Reduced Pressure Detector backflow Preveneter Assemblies

Features

Frequently Asked Questions

Popular Search Queries

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Select your cookie preferences

Strictly Necessary Cookies

Advertising

Recommendations

Functionality

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Categories

Brands

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

Features

Frequently Asked Questions

How does backflow occur?

Can check valves prevent backflow?

Are dual check valves the same as backflow preventers?

Popular Search Queries

Explore More

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