Airgap & Backflow Prevention
A backflow preventer, like an air gap or vacuum breaker, keeps contaminated water from flowing back into your water supply.
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VA4 Airgap Washing Machine Wall Box Drain
No Fitting - $8.99
1/2 PVC Glue Fitting - $9.55
1/2 CPVC Glue Fitting - $9.55
1/2 & 5/8 ID Barb - $9.55
1/2 & 5/8 ID Barbed Elbow - $9.55
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Wall Mount Air Gap 1/4 OD Tube Inlet x 3/8 OD Tube Outlet
Single - $16.82
25 Pack - $399.48
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Standpipe Airgap - 1.5" PVC 40 / ABS, 1/2" FPT G15
Single - $10.59
3-Pack - $30.19
6-Pack - $54.02
12-Pack - $92.23
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Drain II PVC Airgap
1/2" Female NPT Top - 1/4" JG Sideport - $14.39
1/2" Female NPT Top - 3/8" JG Sideport - $13.20
1/2" Female NPT Top - No Sideport - $11.16
1/2" JG Top - 1/4" JG Sideport - $12.89
1/2" JG Top - 3/8" JG Sideport - $13.20
1/2" JG Top - No Sideport - $11.16
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GAP-A-RO™ 31-S Wall Mount Air Gap With SHROUD, NSF/UPC Listed 1/4 x 3/8
Default Title - $22.88
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Dual Inlet Air Gap - 1/4" push-in
Default Title - $27.13
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Dual Inlet Dishwasher Air Gap T52-HF1
Default Title - $28.61
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Wall Mount Air Gap NSF/UPC Listed 1/4 x 3/8
Default Title - $21.97
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VA-2 Air Gap for Standpipe & RO drains
1/2 & 5/8 ID Barbed - $8.11
1/2 & 5/8 ID Barbed Elbow - $8.59
1/2 CPVC Glue Fitting - $8.59
1/2 JG Fitting - $10.01
1/2 PVC Glue Fitting - $8.59
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Standpipe Airgap - 1.5" PVC 40 / ABS, 3/4" FPT G15
Single - $12.61
3-Pack - $35.93
6-Pack - $64.30
12-Pack - $92.57
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Mr Drain Air Gap MD-10A - 1.5" or 2" Standpipes
Default Title - $18.21
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DLA-G Airgap 1.5" PVC SCH40 - Airgap 1.5" PVC SCH40 - 1/2" ID Barb
Single - $16.11
5-Pack - $72.50
10-Pack - $128.57
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Twin Inlet High Flow Dual Air Gap with Brass Cover Cap
Antique Brass - $41.50
Antique Bronze - $51.08
Antique Copper - $57.58
Antique Pewter - $51.08
Biscuit - $52.26
Black Oil Rubbed Bronze - $51.08
Coco Bronze - $41.50
English Bronze - $57.58
Oil Rubbed Bronze - $47.17
Oxford Oil Rubbed Bronze - $51.08
Polished Brass PVD - $57.58
Polished Chrome Brass - $57.58
Polished Copper - $51.08
Polished Nickel PVD - $51.08
Satin Brass PVD - $51.08
Satin Chrome - $57.58
Satin Nickel PVD - $57.58
Soft Pewter - $51.08
Tuscan Brass - $51.08
Weathered Brass - $43.99
Weathered Copper - $48.59
White - $57.58
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Standpipe Airgap - 2" PVC 40 / ABS, 1" FPT G20
Single - $21.20
20-Pack - $409.87
50-Pack - $989.33
100-Pack - $1,908.00
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W-5 2" to 1-1/2" Coupling for VA-4 Standpipe Air Gap
Single - $5.04
20-Pack - $99.12
50-Pack - $243.60
100-Pack - $478.80
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Gap-A-Flo AG150-002 Inline Airgap 12 GPM
Single - $18.38
Pack of 5 - $87.32
Pack of 25 - $399.85
Pack of 50 - $708.57
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Eco-Tech - DLA-G Airgap 1.5" ABS SCH40 - Airgap 1.5" ABS SCH40 - 1/2" ID Barb
Single - $17.66
5-Pack - $83.88
10-Pack - $158.92
20-Pack - $281.14
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Gap-A-Flo AG150-001 Inline Airgap 7 GPM
Default Title - $18.34
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Drain II ABS Airgap
1/2" JG Top - 1/4" JG Sideport - $12.89
1/2" JG Top - 3/8" JG Sideport - $12.54
1/2" JG Top - No Sideport - $11.16
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Universal METAL Air Gap Cover - Polished Copper
Default Title - $37.00
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John Guest VA2/VA4 Fitting Only - 1/2 & 5/8 ID Barbed Elbow
Single - $1.16
5-Pack - $5.70
10-Pack - $11.21
20-Pack - $22.04
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Universal METAL Air Gap Cover - Brushed SS
Default Title - $15.54
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Brass Cover Cap for Twin Inlet Air Gap - Satin Nickel PVD
Single - $31.34
Pack of 5 - $154.09
Pack of 25 - $757.39
Pack of 50 - $1,488.65
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Gap-Cap™ Twin Inlet Air Gap - 1/2" Slip With Barb Elbow And 3/8" OD
Default Title - $12.54
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Universal METAL Air Gap Cover - Brushed Nickel
Default Title - $21.00
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John Guest VA2/VA4 Fitting Only - 1/2 & 5/8 Straight Barb
Single - $0.68
5-Pack - $3.35
10-Pack - $6.62
20-Pack - $13.06
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Dialygap TG-20 Dialysis Air Gap - 1.5" or 2" Standpipes
Single - $23.99
Pack of 5 - $107.96
Pack of 25 - $479.84
Pack of 50 - $770.00
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DLA-G Airgap 1.5" PVC SCH40 - 3/8" Push-in
Single - $16.07
5-Pack - $76.31
10-Pack - $141.37
20-Pack - $255.14
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John Guest VA2/VA4 Fitting Only - 1/2 PVC Glue
Single - $1.16
2-Pack - $2.26
4-Pack - $4.41
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Air Gap Sink Mount With Chrome Cover for POU RO Water Cooler
Default Title - $29.99
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DLA-G Airgap 1.5" ABS SCH40 - 5/8" Jaco
Single - $17.67
5-Pack - $86.14
10-Pack - $167.87
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DLA-G Airgap 1.5" PVC SCH40 - 1/2" Push-in
Single - $8.48
5-Pack - $41.34
10-Pack - $80.56
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Dishwasher Air Gap Chrome Plated brass cap
Default Title - $10.12
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John Guest VA2/VA4 Fitting Only - 1/2 CPVC Glue
Single - $1.16
100-Pack - $110.20
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DLA-G Airgap 1.5" PVC SCH40 - 5/8" Jaco
Single - $12.09
5-Pack - $59.44
10-Pack - $116.87
20-Pack - $229.71
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Air Gap Sink Mount Chrome Cover - 1/4 Push-in x 1/4 ID Barb
Single - $26.72
10-Pack - $260.53
50-Pack - $1,269.25
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Dishwasher Air Gap with Plastic Chrome Plated Cap
Single - $3.65
10 Pack - $29.93
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DLA-G Airgap 1.5" ABS SCH40 - 3/8" Push-in
Single - $10.16
5-Pack - $49.53
10-Pack - $96.52
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Brass Cover Cap for Twin Inlet Air Gap - Polished Copper
Default Title - $24.84
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Brass Cover Cap for Twin Inlet Air Gap - Antique Brass
Default Title - $15.26
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DLA-G Airgap 1.5" ABS SCH40 - 1/2" Push-in
Single - $17.59
5-Pack - $80.90
10-Pack - $147.86
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Dishwasher to Garbage Disposer Connector w/4 Clamp
Default Title - $3.23
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Lead Free Vacuum Breaker with Hose Connection 3/4" Series 8B
Default Title - $30.09
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Universal PLASTIC Air Gap Cover - Black
Default Title - $24.95
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Watts Reduced Pressure Zone Backflow Preventer 1" Lead Free Bronze RPZ (LF009M2QT)
Default Title - $239.95
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Universal METAL Air Gap Cover - Polished Chrome
Default Title - $11.10
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Brass Cover Cap for Twin Inlet Air Gap - Satin Brass
Default Title - $24.84
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Universal PLASTIC Air Gap Cover - Polar White
Default Title - $3.55
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John Guest VA2/VA4 Fitting Only - 1/2 PVC JG
Single - $2.58
3-Pack - $7.61
6-Pack - $14.96
12-Pack - $29.41
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Brass Cover Cap for Twin Inlet Air Gap - Satin Chrome
Default Title - $31.34
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VA4 Airgap Washing Machine Wall Box Drain
No Fitting - $8.99
1/2 PVC Glue Fitting - $9.55
1/2 CPVC Glue Fitting - $9.55
1/2 & 5/8 ID Barb - $9.55
1/2 & 5/8 ID Barbed Elbow - $9.55
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Wall Mount Air Gap 1/4 OD Tube Inlet x 3/8 OD Tube Outlet
Single - $16.82
25 Pack - $399.48
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Standpipe Airgap - 1.5" PVC 40 / ABS, 1/2" FPT G15
Single - $10.59
3-Pack - $30.19
6-Pack - $54.02
12-Pack - $92.23
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Drain II PVC Airgap
1/2" Female NPT Top - 1/4" JG Sideport - $14.39
1/2" Female NPT Top - 3/8" JG Sideport - $13.20
1/2" Female NPT Top - No Sideport - $11.16
1/2" JG Top - 1/4" JG Sideport - $12.89
1/2" JG Top - 3/8" JG Sideport - $13.20
1/2" JG Top - No Sideport - $11.16
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GAP-A-RO™ 31-S Wall Mount Air Gap With SHROUD, NSF/UPC Listed 1/4 x 3/8
Default Title - $22.88
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Dual Inlet Air Gap - 1/4" push-in
Default Title - $27.13
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Dual Inlet Dishwasher Air Gap T52-HF1
Default Title - $28.61
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Wall Mount Air Gap NSF/UPC Listed 1/4 x 3/8
Default Title - $21.97
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VA-2 Air Gap for Standpipe & RO drains
1/2 & 5/8 ID Barbed - $8.11
1/2 & 5/8 ID Barbed Elbow - $8.59
1/2 CPVC Glue Fitting - $8.59
1/2 JG Fitting - $10.01
1/2 PVC Glue Fitting - $8.59
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Standpipe Airgap - 1.5" PVC 40 / ABS, 3/4" FPT G15
Single - $12.61
3-Pack - $35.93
6-Pack - $64.30
12-Pack - $92.57
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Mr Drain Air Gap MD-10A - 1.5" or 2" Standpipes
Default Title - $18.21
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DLA-G Airgap 1.5" PVC SCH40 - Airgap 1.5" PVC SCH40 - 1/2" ID Barb
Single - $16.11
5-Pack - $72.50
10-Pack - $128.57
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Twin Inlet High Flow Dual Air Gap with Brass Cover Cap
Antique Brass - $41.50
Antique Bronze - $51.08
Antique Copper - $57.58
Antique Pewter - $51.08
Biscuit - $52.26
Black Oil Rubbed Bronze - $51.08
Coco Bronze - $41.50
English Bronze - $57.58
Oil Rubbed Bronze - $47.17
Oxford Oil Rubbed Bronze - $51.08
Polished Brass PVD - $57.58
Polished Chrome Brass - $57.58
Polished Copper - $51.08
Polished Nickel PVD - $51.08
Satin Brass PVD - $51.08
Satin Chrome - $57.58
Satin Nickel PVD - $57.58
Soft Pewter - $51.08
Tuscan Brass - $51.08
Weathered Brass - $43.99
Weathered Copper - $48.59
White - $57.58
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Standpipe Airgap - 2" PVC 40 / ABS, 1" FPT G20
Single - $21.20
20-Pack - $409.87
50-Pack - $989.33
100-Pack - $1,908.00
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W-5 2" to 1-1/2" Coupling for VA-4 Standpipe Air Gap
Single - $5.04
20-Pack - $99.12
50-Pack - $243.60
100-Pack - $478.80
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Gap-A-Flo AG150-002 Inline Airgap 12 GPM
Single - $18.38
Pack of 5 - $87.32
Pack of 25 - $399.85
Pack of 50 - $708.57
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Eco-Tech - DLA-G Airgap 1.5" ABS SCH40 - Airgap 1.5" ABS SCH40 - 1/2" ID Barb
Single - $17.66
5-Pack - $83.88
10-Pack - $158.92
20-Pack - $281.14
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Gap-A-Flo AG150-001 Inline Airgap 7 GPM
Default Title - $18.34
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Drain II ABS Airgap
1/2" JG Top - 1/4" JG Sideport - $12.89
1/2" JG Top - 3/8" JG Sideport - $12.54
1/2" JG Top - No Sideport - $11.16
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Universal METAL Air Gap Cover - Polished Copper
Default Title - $37.00
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John Guest VA2/VA4 Fitting Only - 1/2 & 5/8 ID Barbed Elbow
Single - $1.16
5-Pack - $5.70
10-Pack - $11.21
20-Pack - $22.04
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Universal METAL Air Gap Cover - Brushed SS
Default Title - $15.54
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Brass Cover Cap for Twin Inlet Air Gap - Satin Nickel PVD
Single - $31.34
Pack of 5 - $154.09
Pack of 25 - $757.39
Pack of 50 - $1,488.65
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Gap-Cap™ Twin Inlet Air Gap - 1/2" Slip With Barb Elbow And 3/8" OD
Default Title - $12.54
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Universal METAL Air Gap Cover - Brushed Nickel
Default Title - $21.00
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John Guest VA2/VA4 Fitting Only - 1/2 & 5/8 Straight Barb
Single - $0.68
5-Pack - $3.35
10-Pack - $6.62
20-Pack - $13.06
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Dialygap TG-20 Dialysis Air Gap - 1.5" or 2" Standpipes
Single - $23.99
Pack of 5 - $107.96
Pack of 25 - $479.84
Pack of 50 - $770.00
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DLA-G Airgap 1.5" PVC SCH40 - 3/8" Push-in
Single - $16.07
5-Pack - $76.31
10-Pack - $141.37
20-Pack - $255.14
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John Guest VA2/VA4 Fitting Only - 1/2 PVC Glue
Single - $1.16
2-Pack - $2.26
4-Pack - $4.41
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Air Gap Sink Mount With Chrome Cover for POU RO Water Cooler
Default Title - $29.99
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DLA-G Airgap 1.5" ABS SCH40 - 5/8" Jaco
Single - $17.67
5-Pack - $86.14
10-Pack - $167.87
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DLA-G Airgap 1.5" PVC SCH40 - 1/2" Push-in
Single - $8.48
5-Pack - $41.34
10-Pack - $80.56
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Dishwasher Air Gap Chrome Plated brass cap
Default Title - $10.12
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John Guest VA2/VA4 Fitting Only - 1/2 CPVC Glue
Single - $1.16
100-Pack - $110.20
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DLA-G Airgap 1.5" PVC SCH40 - 5/8" Jaco
Single - $12.09
5-Pack - $59.44
10-Pack - $116.87
20-Pack - $229.71
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Air Gap Sink Mount Chrome Cover - 1/4 Push-in x 1/4 ID Barb
Single - $26.72
10-Pack - $260.53
50-Pack - $1,269.25
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Dishwasher Air Gap with Plastic Chrome Plated Cap
Single - $3.65
10 Pack - $29.93
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DLA-G Airgap 1.5" ABS SCH40 - 3/8" Push-in
Single - $10.16
5-Pack - $49.53
10-Pack - $96.52
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Brass Cover Cap for Twin Inlet Air Gap - Polished Copper
Default Title - $24.84
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Brass Cover Cap for Twin Inlet Air Gap - Antique Brass
Default Title - $15.26
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DLA-G Airgap 1.5" ABS SCH40 - 1/2" Push-in
Single - $17.59
5-Pack - $80.90
10-Pack - $147.86
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Dishwasher to Garbage Disposer Connector w/4 Clamp
Default Title - $3.23
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Lead Free Vacuum Breaker with Hose Connection 3/4" Series 8B
Default Title - $30.09
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Universal PLASTIC Air Gap Cover - Black
Default Title - $24.95
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Watts Reduced Pressure Zone Backflow Preventer 1" Lead Free Bronze RPZ (LF009M2QT)
Default Title - $239.95
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Universal METAL Air Gap Cover - Polished Chrome
Default Title - $11.10
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Brass Cover Cap for Twin Inlet Air Gap - Satin Brass
Default Title - $24.84
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Universal PLASTIC Air Gap Cover - Polar White
Default Title - $3.55
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John Guest VA2/VA4 Fitting Only - 1/2 PVC JG
Single - $2.58
3-Pack - $7.61
6-Pack - $14.96
12-Pack - $29.41
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Brass Cover Cap for Twin Inlet Air Gap - Satin Chrome
Default Title - $31.34
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An air gap for your kitchen sink prohibits any debris from moving from the sink to your dishwasher or drinking water system. Air gaps and standpipe air gaps are an inexpensive way to protect against backflow. Air gaps and air gap covers come in a variety of materials and finishes.
A backflow preventer keeps water flowing in one direction to stop the reverse flow of contaminated water to your drinking water supply.