215 ppt5 Types of Shower Mixer Valves

What are the three types of shower mixer valves mentioned in the document?

• Gravity mixer, Mains-fed/boosted mixer, Electric instantaneous

• Pressure mixer, Manual mixer, Digital mixer

• Thermostatic mixer, Manual mixer, Electric mixer

• Gravity mixer, Pressure mixer, Digital mixer

What type of system does a cistern-fed/gravity mixer rely on for pressure?

• High-pressure system

• The head height of the CWSC

• Medium-pressure system

• Variable-pressure system

What is the safest valve to use in a cistern-fed/gravity mixer?

• Pressure relief valve

• Ball valve

• Thermostatic valve

• Check valve

What does the sensing device in a thermostatic valve do?

• Heats the water

• Expands and contracts

• Filters the water

• Changes water color

What is the relationship between shower head location and water level in a negative head system?

• Shower head height is above or within 1m of the height of the CWSC

• Shower head height is 3m below the height of the CWSC

• Shower head height is in a different building to the CWSC

• Shower head height is not related to the height of the CWSC water level

What type of pump is required if the flowrate is insufficient?

• Positive head pump

• Negative head pump

• bicycle pump

• Submersible pump

What is the key component that causes the pump to operate in positive head showers?

• Flow switch

• Pressure valve

• Thermostat

• Pump

Which shower system is most suitable for homes with a high water tank?

• Positive head showers

• Negative head showers

• Electric showers

• Mixer showers

In what situations can negative head pumps be used?

• Positive-head, negative-head, and whole-house

• Only positive-head

• Only negative-head

• Only whole-house

What is the starting point of a negative head in relation to the CWSC?

• 600mm below

• 600mm above

• 300mm below

• 300mm above