Cold Water Systems Quiz L3P2U5,2.4:4a

What are full-way gate valves used for?

• Controlling water flowrate

• Isolating low pressure water supplies

• Draining water systems

• Isolating high pressure water supplies

What is the working principle of full-way gate valves?

• Using a rubber washer to stop the flow of water

• Restricting the flowrate of water

• Rotating the valve head clockwise to allow water flow

• Raising a gate to allow water flow

What is the term used to describe the unrestricted flow of water in full-way gate valves?

• Partial bore

• Full bore

• Restricted bore

• No bore

What type of water supplies are full-way gate valves not suitable for?

• No pressure water supplies

• Low pressure water supplies

• High pressure water supplies

• Medium pressure water supplies

What does a spherical plug valve contain to allow water flow and to close the water off?

• A screwdriver slot

• A brass ball with a hole through it

• A metal gate

• A rubber washer

How is the water flow controlled in a spherical plug valve?

• By using a screwdriver slot

• By using a lever or handle

• By turning the valve through 90 degrees

• By rotating the valve head counter-clockwise

What is another name for a drain off valve?

• Isolation valve

• Full-way gate valve

• M/T valve

• Spherical plug valve

Where should drain valves be placed in a water system?

• At high points in the system

• At low points in the system

• At the water source

• At the water outlet

What type of drain valve is required to be fitted in accordance with the Water Supply (water fittings) Regulations?

• Drain valve with packing gland

• Male threaded end drain valve

• Drain valve without packing gland

• Any type of drain valve

What pressure of water is not recommended for full-way gate valves?

• No pressure

• Medium pressure

• Low pressure

• High pressure