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

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

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

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

• Type DB Pipe interrupter with atmospheric vent and moving element

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

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

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

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

• Type DB Pipe interrupter with atmospheric vent and moving element

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

• 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%

• Single check valve

Where would you fit an HUK1 backflow prevention device?

• In a bath/shower mixer

• As a replacement outside tap/hose union bibtap

• In an outside hose union bib tap installation

• In a sealed central heating system

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

• They are suitable for fluid category 4 installations

• They are not suitable for backflow prevention

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

• Type HA Hose union backflow preventer

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

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

• Type HA Hose union backflow preventer

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

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

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

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

• 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 for back syphonage protection only?

• 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 HC Diverter with automatic return

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

Which backflow prevention device is used to bring existing hose union bib tap installations into line with the Water Supply (water fittings) Regulations?

• Type DB Pipe interrupter with atmospheric vent and moving element

• Type HC Diverter with automatic return

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

• Type HA Hose union backflow preventer