Which of the following is a type of shower mixer valve?

• Gravity mixer

• Pressure valve

• Thermal mixer

• Rotary valve

What is one classification of shower mixer valves?

• Mains-fed/boosted mixer

• Hydraulic mixer

• Solar mixer

• Pneumatic mixer

What is the purpose of having the cold water feed to the cylinder higher than the cold for the shower in a cistern-fed/gravity mixer system?

• To ensure the cold water runs out first

• To ensure the hot water runs out first

• To balance the water pressure

• To reduce water temperature

What is the minimum head required for the shower mixer valve in a cistern-fed/gravity mixer system?

• 0.5m

• 1m

• 1.5m

• 2m

What is the recommended pipe size before reducing to 15mm in a cistern-fed/gravity mixer system?

• 10mm

• 15mm

• 22mm

• 30mm

What is required for a cistern-fed/gravity mixer to function properly?

• Unequal pressure

• Equal pressure

• High pressure

• No pressure

From where are both the hot and cold water fed in a cistern-fed/gravity mixer?

• Directly from the mains

• From the CWSC

• From a separate tank

• From a boiler

What is the minimum head required from the base of the CWSC to the outlet of the shower rose?

• 0.5m

• 1m

• 1.5m

• 2m

What is the function of a thermostatic valve in a cistern-fed/gravity mixer?

• It filters impurities from water.

• It controls the water flow rate.

• It maintains the required temperature by expanding and contracting.

• It adds minerals to the water.

What is the purpose of a twin impellor booster pump in a plumbing system?

• To decrease water pressure

• To increase pressure for both hot and cold feeds

• To filter water impurities

• To heat the water