Backflow Prevention Quiz L3P2U5,2.9:2

Which backflow prevention device can be used to connect heating systems to the mains cold water supply?

• Type EA/EB Verifiable and non-verifiable single check valves

• Type BA Verifiable backflow preventer with Reduced Pressure Zone (RPZ)

• Type DB Pipe interrupter with atmospheric vent and moving element

• Type CA Non-verifiable disconnector with difference between pressure zones not greater than 10%

Which backflow prevention device can be used up to Fluid category 4?

• Type EA/EB Verifiable and non-verifiable single check valves

• Type DB Pipe interrupter with atmospheric vent and moving element

• Type BA Verifiable backflow preventer with Reduced Pressure Zone (RPZ)

• Type CA Non-verifiable disconnector with difference between pressure zones not greater than 10%

An EA/EB backflow prevention device is also known as what?

• Type CA Non-verifiable disconnector with difference between pressure zones not greater than 10%

• Type BA Verifiable backflow preventer with Reduced Pressure Zone (RPZ)

• Single check valve

• Type DB Pipe interrupter with atmospheric vent and moving element

Where would you fit an HUK1 backflow prevention device?

• In an outside hose union bib tap installation

• In a sealed central heating system

• As a replacement outside tap/hose union bibtap

• In a bath/shower mixer

What does verifiable mean in the context of EA/EB and EC/ED backflow prevention devices?

• They are not suitable for fluid category 1 protection

• They are only used in central heating temporary filling loops

• They can be checked or verified to be working correctly

• They cannot be checked or verified

Which backflow prevention device is suitable for fluid category 1 protection against fluid category 2 risk?

• Type HUK1 Hose union bib-tap incorporating a double check valve arrangement

• Type HA Hose union backflow preventer

• Type EC/ED Verifiable and non-verifiable double check valves

• Type EA/EB Verifiable and non-verifiable single check valves

Which backflow prevention device is used for fluid category 1 protection against fluid category 3 risk?

• Type EA/EB Verifiable and non-verifiable single check valves

• Type HUK1 Hose union bib-tap incorporating a double check valve arrangement

• Type EC/ED Verifiable and non-verifiable double check valves

• Type HA Hose union backflow preventer

Which backflow prevention device is used for fluid category 4 installations?

• Type EA/EB Verifiable and non-verifiable single check valves

• Type BA Verifiable backflow preventer with Reduced Pressure Zone (RPZ)

• Type DB Pipe interrupter with atmospheric vent and moving element

• Type CA Non-verifiable disconnector with difference between pressure zones not greater than 10%

Which backflow prevention device is used for back syphonage protection only?

• Type HC Diverter with automatic return

• Type DB Pipe interrupter with atmospheric vent and moving element

• Type CA Non-verifiable disconnector with difference between pressure zones not greater than 10%

• Type BA Verifiable backflow preventer with Reduced Pressure Zone (RPZ)

Which backflow prevention device is used to bring existing taps into line with the Water Supply (water fittings) Regulations?

• Type HA Hose union backflow preventer

• Type DB Pipe interrupter with atmospheric vent and moving element

• Type HUK1 Hose union bib-tap incorporating a double check valve arrangement

• Type HC Diverter with automatic return