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SKU
188A-125
Watts - 1-1/4" Anti-Siphon Vacuum Breaker
- Backflow prevention for irrigation and non-potable systems
- Durable brass body with bronze internals
- Silicone disc resists heat and water hammer
- Not for use under continuous pressure
- Certified to ASSE 1001 and CSA B64 standards
- Must be installed 6" above downstream piping
- Sold Individually. Manufacturer Pack Size = 12
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Product Details
The Watts Series 188A Atmospheric Vacuum Breaker is designed for non-potable applications like irrigation and industrial processing, protecting drinking water from backsiphonage. Ideal for systems not under continuous pressure, it offers heat resistance and spill prevention under all flow rates, making it a reliable backflow prevention device.
Key Features:
- Protects drinking water from backsiphonage in non-potable service systems
- Lightweight disc float seals vent during flow and opens upon pressure loss
- Durable silicone disc resists heat and water hammer shock
- Meets A.S.S.E. Standard 1001, ANSI A112.1.1, and CSA B64
- Suitable for use up to 180°F (82°C)
Construction & Durability:
- Body made of corrosion-resistant brass
- Internal trim constructed from durable bronze
- Silicone seat disc offers high-heat and shock resistance
- Plastic disc float designed for reliability and longevity
Performance & Functionality:
- Automatically vents air to prevent backsiphonage when supply pressure is lost
- Not for use under continuous pressure or potential backpressure conditions
- Designed for use in irrigation systems, firelines, and processing lines
Ease of Installation & Use:
- Requires installation 6" above the highest downstream piping
- Cannot be installed with downstream shutoff valves
- No special tools required for servicing or installation
Technical Specifications:
- Max Operating Temperature: 180°F (82°C)
- Material: Brass body, bronze internals, silicone disc, plastic float
- Certifications: A.S.S.E. 1001, ANSI A112.1.1, CSA B64
- Application: Atmospheric vacuum breaker (AVB)
- Installation Requirement: 6" above downstream piping
Installation & Application:
- Recommended Uses: Irrigation systems, fireline protection, industrial processing lines
- Installation Method: Inline above downstream piping, open to atmosphere
- Not for continuous pressure applications or systems with potential backpressure
Compatibility & Optional Accessories:
- Works with standard irrigation system fittings
- No additional accessories required
Specifications
Brand
Watts Regulator Co
Connection Size
1-1/4"
Material
Bronze
Operating Temperature
180°F
Optimum Pressure
6 PSI
Outer Diameter
2-1/2"
Pressure Rating Range
2 - 125 PSI
Series
188
Tube Size
3/4" - 2"
Resources & Videos
- Installation Installation (Size: 103.8 KB)
- Spec Sheet Spec Sheet (Size: 165.4 KB)