Where should a vacuum breaker be placed?

A pressure vacuum breaker should be placed a minimum of 12 inches above all downstream outlets and pipings.

How to maintain a vacuum breaker?

Periodically inspect the vacuum breaker for signs of wear / damage and replace it if necessary.

How to install a vacuum breaker?

Shut the water supply off and drain the system to remove the existing water.Place the vacuum breaker as per the instructions and general codes & regulations.Test the vacuum breaker to make sure that it is working properly.Fill up the system by turning on the water supply again.

Vacuum Breakers

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Vacuum breakers are used in the chemical and pharmaceutical industries to prevent vacuum formation in a piping system. They allow air to enter the system when the pressure drops. Raptor Supplies... Read More

T&S -

Vacuum Breaker

Style	Model	Connection	Item	Price (inc. GST)
A	B-0456-04-963VB	-	Vacuum Breaker	SGD 1041.01
B	B-0963	-	Vacuum Breaker Assembly	SGD 664.74
C	B-0455-04-963VB	-	Vacuum Breaker	SGD 1035.48	RFQ
D	5PR-VB	-	Vacuum Breaker	SGD 140.25
E	B-0977	-	Vacuum Breaker	SGD 483.96
F	B-0975-GH	-	Vacuum Breaker	SGD 543.55
G	B-0975	-	Vacuum Breaker	SGD 449.79
H	B-0972	-	Vacuum Breaker	SGD 80.87
I	B-0970-FE	-	Vacuum Breaker	SGD 121.19
J	B-0970-01	-	Vacuum Breaker	SGD 206.03
K	B-0965	-	Vacuum Breaker	SGD 230.49
L	B-0929-A	-	Vacuum Breaker	SGD 265.39
M	B-0929	-	Vacuum Breaker	SGD 349.88
N	B-0458	-	Vacuum Breaker Assembly	SGD 919.06
O	B-0457	-	Vacuum Breaker Assembly	SGD 975.46
P	B-0456-04	-	Vacuum Breaker Assembly	SGD 469.06
Q	B-0456	-	Vacuum Breaker Assembly	SGD 413.09
R	B-0455-M	-	Vacuum Breaker Assembly	SGD 2782.79
S	B-0455-04	-	Vacuum Breaker Assembly	SGD 463.31
T	B-0455	-	Vacuum Breaker Assembly	SGD 413.09
U	002849-40	-	Vacuum Breaker	SGD 249.85
V	001301-45	-	Vacuum Breaker	SGD 251.77
W	B-0969	1/2"	Vacuum Breaker	SGD 126.18
X	B-0968	3/8"	Vacuum Breaker	SGD 78.20

WATTS -

8 Series Vacuum Breakers

Style	Model	Body Material	Max. Temp.	Max. Working Pressure	Price (inc. GST)
A	8BC 3/4	Brass	180 Degree F	8.6 Bar	SGD 97.60
B	8C 3/4	Brass	180 Degree F	8.6 Bar	SGD 100.36
C	8BI-C	Brass	180 Degree F	8.6 Bar	SGD 104.69
D	8B 3/4	Brass	180 Degree F	8.6 Bar	SGD 22.38
E	8AC 3/4	Brass	180 Degree F	8.6 Bar	SGD 133.08
F	8 3/4	Brass	180 Degree F	8.6 Bar	SGD 64.98
G	8A 3/4	Brass	180 Degree F	8.6 Bar	SGD 83.06
H	8Z-4	Brass	180° F	125 psi	SGD 136.33
I	8BI 3/4	Brass	180 Degree F	8.6 Bar	SGD 12.75
J	8P 3/4	Reinforced Thermoplastic	180 Degree F	8.6 Bar	SGD 19.38

WATTS -

188A Series Vacuum Breakers

Style	Model	Inlet Size	Max. Temp.	Max. Working Pressure	Outlet Size	Price (inc. GST)
A	188A 1 1/2	1 1/2"	180° F	125 psi	1-1/2"	SGD 700.19
B	188A 1 1/4	1 1/4"	180° F	125 psi	1-1/4"	SGD 388.28
C	188A 1	1"	180° F	125 psi	1"	SGD 281.39
D	188A 2	2"	180° F	125 psi	2"	SGD 1088.47
E	188A 3/4	3/4"	180 Degree F	8.6 Bar	3/4"	SGD 218.15

WATTS -

LFN388 Series Vacuum Breakers

Style	Model	Inlet Size	Max. Temp.	Max. Working Pressure	Min. Temp.	Outlet Size	Price (inc. GST)
A	LFN388-C 1/4	-	-	-	-	-	SGD 389.50
B	LFN388 1/4	1/4"	180 Degree F	8.6 Bar	33 Degree F	1/4"	SGD 179.98
C	LFN388-SC 1/4	1/4"	180 Degree F	8.6 Bar	33 Degree F	1/4"	SGD 245.42
D	LFN388 3/8	3/8"	180° F	125 psi	33° F	3/8"	SGD 208.83
E	LFN388-C 3/8	3/8"	180 Degree F	8.6 Bar	33 Degree F	3/8"	SGD 373.02
F	LFN388-SC 3/8	3/8"	180 Degree F	8.6 Bar	33 Degree F	3/8"	SGD 353.36

WATTS -

LF008PCQT Series Vacuum Breakers

Style	Model	Inlet Size	Max. Temp.	Max. Working Pressure	Min. Temp.	Outlet Size	Thread Type	Price (inc. GST)
A	LF008-PC-QT-SC 1	1"	180° F	150 psi	33° F	1"	NPT	SGD 4574.12	RFQ
B	LF008PCQT 1	1"	180° F	150 psi	33° F	1"	NPT	SGD 1726.48	RFQ
C	LF008PCQT-L 1/2	1/2"	180 Degree F	10.3 Bar	33 Degree F	1/2"	FPT	SGD 1327.30
D	LF008PCQT 1/2	1/2"	180° F	150 psi	33° F	1/2"	NPT	SGD 950.69
E	LF008PCQT-SC 1/2	1/2"	180° F	150 psi	33° F	1/2"	NPT	SGD 2706.95
F	LF008PCQT-L 3/4	3/4"	180 Degree F	10.3 Bar	33 Degree F	3/4"	FPT	SGD 1675.18	RFQ
G	LF008PCQT 3/4	3/4"	180 Degree F	10.3 Bar	33 Degree F	3/4"	NPT	SGD 1563.96	RFQ
H	LF008-PC-QT-SC 3/4	3/4"	180 Degree F	10.3 Bar	33 Degree F	3/4"	NPT	SGD 4015.71	RFQ
I	LF008PCQT-L 3/8	3/8"	180 Degree F	10.3 Bar	33 Degree F	3/8"	FPT	SGD 1161.50
J	LF008PCQT 3/8	3/8"	180° F	150 psi	33° F	3/8"	NPT	SGD 1236.79
K	LF008PCQT-SC 3/8	3/8"	180° F	150 psi	33° F	3/8"	NPT	SGD 2706.95

WATTS -

800M4FR Series Backflow Preventer Vacuum Breakers

Style	Model	Inlet Connection	Inlet Size	Inlet Type	Max. Temp.	Max. Working Pressure	Min. Temp.	Outlet Connection	Outlet Size	Price (inc. GST)
A	800M4FR 1	-	1"	Female Threaded	140 Degree F	10.3 Bar	33 Degree F	-	1"	SGD 342.81	RFQ
B	U800M4-FR 3/4	-	3/4"	Female Threaded	140 Degree F	10.3 Bar	33 Degree F	-	3/4"	SGD 538.79	RFQ
C	800M4-FR-QC 3/4	-	3/4"	Quick Connect	140 Degree F	10.3 Bar	33 Degree F	-	3/4"	SGD 627.11	RFQ
D	800M4-FR-SH 3/4	-	3/4"	Female Threaded	140 Degree F	10.3 Bar	33 Degree F	-	3/4"	SGD 602.03	RFQ
E	800M4FR 1/2	Female Threaded	1/2"	Female Threaded	140° F	150 psi	33° F	Female Threaded	1/2"	SGD 401.96	RFQ
F	800M4-FR 1 1/4	Female Threaded	1 1/4"	Female Threaded	140° F	150 psi	33° F	Female Threaded	1-1/4"	SGD 1079.65	RFQ
G	800M4-FR-SH 1	Female Threaded	1"	Female Threaded	140° F	150 psi	33° F	Female Threaded	1"	SGD 609.65	RFQ
H	800M4-FR-SH 1 1/2	Female Threaded	1 1/2"	Female Threaded	140° F	150 psi	33° F	Female Threaded	1-1/2"	SGD 1505.08	RFQ
I	800M4-FR-SH 2	Female Threaded	2"	Female Threaded	140° F	150 psi	33° F	Female Threaded	2"	SGD 1548.70	RFQ
J	800M4-FR-SH 1 1/4	Female Threaded	1 1/4"	Female Threaded	140° F	150 psi	33° F	Female Threaded	1-1/4"	SGD 1242.26	RFQ
K	800M4-FR-QC 1	Quick Connect	1"	Quick Connect	140° F	150 psi	33° F	Quick Connect	1"	SGD 633.67	RFQ
L	800M4-FR-QC 1/2	Quick Connect	1/2"	Quick Connect	140° F	150 psi	33° F	Quick Connect	1/2"	SGD 627.11	RFQ

WATTS -

LF767FR Series Vacuum Breakers

Style	Model	Price (inc. GST)
A	LF767FR 1/2	SGD 871.44	RFQ
B	LF767FR 1	SGD 883.42	RFQ
C	LF767FR 1 1/4	SGD 1581.42	RFQ
D	LF767FR 3/4	SGD 871.44	RFQ
E	LF767FR 1 1/2	SGD 1778.79	RFQ
F	LF767FR 2	SGD 1999.14	RFQ

WATTS -

S8 Series Vacuum Breakers

Style	Model	Inlet Size	Max. Temp.	Max. Working Pressure	Min. Temp.	Outlet Size	Thread Type	Price (inc. GST)
A	S-8C 1/2	1/2"	180 Degree F	8.6 Bar	33 Degree F	1/2"	NPTF	SGD 175.58
B	S-8 1/2	1/2"	180 Degree F	8.6 Bar	33 Degree F	1/2"	GHT	SGD 154.87
C	S-8C-F	1/2"	180° F	125 psi	33° F	1/2"	GHT	SGD 186.51
D	S-8C 3/8	3/8"	180° F	125 psi	33° F	3/8"	GHT	SGD 161.40

WATTS -

LFNLF-9 Series Vacuum Breakers

Style	Model	Inlet Size	Inlet Type	Valve Type	Price (inc. GST)
A	LFNLF9-HT 3/4	3/4"	Swivel Joint	Quarter Turn Ball Valve	SGD 273.74
B	LFNLF9 3/8	3/8"	Male Threaded	No Shutoff Valve	SGD 253.41
C	LFCLFNLF9 3/8	3/8"	Swivel Joint	Quarter Turn Ball Valve	SGD 263.93

WATTS -

LFN9 Series Vacuum Breakers

Style	Model	Inlet Size	Item	Max. Temp.	Max. Working Pressure	Min. Temp.	Outlet Size	Price (inc. GST)
A	LFN9C 1/2	-	Backflow Preventer	-	-	-	-	SGD 943.92
B	LFN9-Z 1/4	1/4"	Vacuum Breaker	140 Degree F	8.6 Bar	33 Degree F	1/4"	SGD 410.07
C	LFN9C 3/8	3/8"	Vacuum Breaker	140° F	125 psi	33° F	3/8"	SGD 463.02
D	LFN9C-M5 3/8	3/8"	Vacuum Breaker	140° F	125 psi	33° F	3/8"	SGD 524.61

WATTS -

288A Series Vacuum Breakers

Style	Model	Inlet Size	Max. Temp.	Max. Working Pressure	Outlet Size	Price (inc. GST)
A	288A-Z39 1/2	1/2"	180° F	125 psi	1/2"	SGD 191.96
B	288A-MB 3/4	3/4"	180 Degree F	8.6 Bar	3/4"	SGD 261.73

WATTS -

710 Series Vacuum Breakers

Style	Model	Price (inc. GST)
A	710 1 1/4	SGD 381.75	RFQ
B	710 1	SGD 231.21	RFQ
C	710 1 1/2	SGD 406.79	RFQ
D	710 2	SGD 543.12	RFQ

WATTS -

9BD Series Vacuum Breakers

Style	Model	Inlet Connection	Inlet Size	Inlet Type	Item	Outlet Connection	Outlet Size	Outlet Type	Price (inc. GST)
A	9BD	Flare Joint	3/8"	Flare Joint	Backflow Preventer	Flare Joint	3/8"	Flare Joint	SGD 1082.17
B	9BD-NPTMXFLARE	Male Threaded	3/8"	Male Threaded	Vacuum Breaker	Flare Joint	3/8"	Flare Joint	SGD 857.23
C	9BD-NPTM 1/4	Male Threaded	1/4"	Male Threaded	Vacuum Breaker	Male Threaded	1/4"	Male Threaded	SGD 896.49
D	9BD-NPTM 3/8	Male Threaded	3/8"	Male Threaded	Vacuum Breaker	Male Threaded	3/8"	Male Threaded	SGD 822.19

WATTS -

LF800M4FR Series Vacuum Breakers

Style	Model	Inlet Size	Inlet Thread Type	Outlet Size	Thread Type	Price (inc. GST)
A	LF800M4FR 1 1/2	1 1/2"	FPT	1-1/2"	FPT	SGD 1420.79	RFQ
B	LF800M4FR 1 1/4	1 1/4"	FPT	1-1/4"	FPT	SGD 1241.58
C	LF800M4FR 1/2	1/2"	FPT	1/2"	FPT	SGD 462.30	RFQ
D	LF800M4FR 2	2"	NPT	2"	NPT	SGD 1726.48	RFQ

WATTS -

765 Series Vacuum Breakers

Style	Model	Price (inc. GST)
A	765-QT-PVB 1/2	SGD 309.72	RFQ
B	U765-QT-PVB 1/2	SGD 350.08	RFQ
C	765-QT PVB 3/4	SGD 215.95	RFQ
D	U765-QT 3/4	SGD 316.43	RFQ
E	765-QT PVB 1	SGD 244.24	RFQ
F	U765-QT 1	SGD 348.35	RFQ
G	U765-QT-PVB 1 1/4	SGD 1161.50	RFQ
H	765-QT-PVB 1 1/2	SGD 1083.89	RFQ
I	U765-QT-PVB 1 1/2	SGD 1327.30	RFQ
J	765-QT-PVB 1 1/4	SGD 1057.89	RFQ
K	U765-QT-PVB 2	SGD 1490.87	RFQ

APOLLO VALVES -

Vacuum Breakers

Style	Model	Item	Price (inc. GST)
A	38LF414AS	Hose Connection Vacuum Breaker	SGD 72.44
B	3830402	Vacuum Breaker	SGD 212.34
C	38LF314AS	Vacuum Breaker	SGD 18.28

ARMSTRONG WORLD INDUSTRIES -

Vacuum Breakers

Style	Model	Price (inc. GST)
A	TAVB-2	SGD 1770.10
B	TAVB-3	SGD 2112.42

FEBCO -

Vacuum Breakers

Style	Model
A	1 1/4 765-QT PVB	RFQ
B	1 765-QT PVB	RFQ
A	3/4 765-QT PVB	RFQ
C	2 765-QT PVB	RFQ

SPENCE -

Vacuum Breakers

Style	Model	Price (inc. GST)
A	VB0125	SGD 200.16
B	VB0125-SS	SGD 275.66

ZURN -

720A Pressure Vacuum Breakers

Style	Model	Price (inc. GST)
A	112-720A	SGD 897.41
B	12-720A	SGD 171.03
C	1-720A	SGD 197.19
D	2-720A	SGD 1018.14
E	34-720A	SGD 159.20

CHICAGO FAUCETS -

Vacuum Breakers

Style	Model	Item	Material	Price (inc. GST)
A	892-GABCP	Vacuum Breaker	Brass	SGD 519.82
B	892-ABCP	Vacuum Breaker	Brass	SGD 130.86
C	778-009KJKCP	Vacuum Breaker	-	SGD 436.62
D	734-105KJKNF	Vacuum Breaker	-	SGD 25.37
E	892-402KJKABNF	Vacuum Breaker Assembly Kit	Plastic/Zinc	SGD 77.13
F	892-254KJKCP	Vacuum Breaker Cover and Screw Kit,Zinc	Zinc	SGD 26.21
G	892-302KJKABNF	Vacuum Breaker Repair Kit	Plastic	SGD 52.90

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Vacuum Breakers

Vacuum breakers are designed to prevent back-siphonage of water due to the generation of vacuum in water drainage systems. Raptor Supplies offers a wide range of vacuum breakers from brands like Apollo, Watts, Hayward, Wilkins, Morse, Plast-O-Matic, Sharkbite and Chicago Faucets. Apollo 38-100, 38-200, 38-500 and 38LF-100 Series vacuum breakers are ideal for a maximum pressure of 150 PSI and are available in 1/4 to 2 inch pipe sizes. The brand's 38-100 Series vacuum breakers prevent backflow of polluted water in portable water supply by breaking the vacuum generated during drainage of water. These ASSE 1001 certified breakers feature a heat-resistant silicone seat disc and a check valve with an air inlet. Watts ANSI, ASSE and NSF compliant vacuum breakers also have a maximum pressure withstanding rating of 150 PSI. These vacuum breakers are available in brass, bronze, chrome plated brass, lead free bronze, lead free brass and polished chrome body material variants.

Working Mechanism

Atmospheric vacuum breakers consist of a spring-loaded valve held closed by a diaphragm.
When a vacuum is detected, the diaphragm collapses to allow air to enter the piping system and break the vacuum.

Categories

Brands

Vacuum Breakers

Vacuum Breaker

8 Series Vacuum Breakers

188A Series Vacuum Breakers

LFN388 Series Vacuum Breakers

LF008PCQT Series Vacuum Breakers

800M4FR Series Backflow Preventer Vacuum Breakers

LF767FR Series Vacuum Breakers

S8 Series Vacuum Breakers

LFNLF-9 Series Vacuum Breakers

LFN9 Series Vacuum Breakers

288A Series Vacuum Breakers

710 Series Vacuum Breakers

9BD Series Vacuum Breakers

LF800M4FR Series Vacuum Breakers

765 Series Vacuum Breakers

Vacuum Breakers

Vacuum Breakers

Vacuum Breakers

Vacuum Breakers

720A Pressure Vacuum Breakers

Vacuum Breakers

Vacuum Breakers

Working Mechanism

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