Types of Backflow Preventers

This Assembly offers the highest degree of protection

• Reduced Pressure Zone Device (RPZD)

• Atmospheric Vacuum Breaker (AVB)

• Double Check Valve Assembly (DCVA)

• Pressure Vacuum Breaker (PVB)

Which type of backflow preventer uses a spring-loaded check valve to prevent backflow?

• Triple check valve backflow preventer

• Spring-loaded check valve backflow preventer

• Single check valve backflow preventer

• Double check valve backflow preventer

What type of backflow preventer is typically used on irrigation systems in WA

• Pressure Vacuum Breaker (PVB)

• Single Check Valve (SCV)

• Reduced Pressure Zone Device (RPZ)

• Double Check Valve (DCV)

What type of backflow preventer is often used in irrigation systems?

• Single check valve backflow preventer

• Reduced pressure zone backflow preventer

• Double check valve backflow preventer

• Pressure vacuum breaker backflow preventer

Which backflow preventer type is commonly used in fire protection systems?

• Pressure Vacuum Breaker (PVB)

• Double Check Valve Assembly (DCVA)

• Reduced Pressure Zone Device (RPZD)

• Single Check Valve Assembly (SCVA)

What is the purpose of an air gap backflow preventer?

• Increase water pressure in the system

• Reduce the amount of water used

• Improve the taste of the water

• Prevent cross-contamination between clean and contaminated water sources.

Which type of backflow preventer is designed to be installed below ground level?

• Pressure Vacuum Breaker (PVB) backflow preventer

• Atmospheric Vacuum Breaker (AVB) backflow preventer

• Reduced Pressure Zone (RPZ) backflow preventer

• Double Check Valve (DCV) backflow preventer

What is the main advantage of a backflow preventer?n RPBA

• Low cost compared to other backflow preventers

• Easy installation process

• Limited maintenance requirements

• Highest level of protection against backflow contamination

An airgap is an

• Assembly

• Device

• Method

• piping

An air gap must be _" minimum?

• 2"

• 1"

• 4"

• 3x pipe diameter