Hydrants

Question 1

What are the two uses of hydrants?

Answer 1

1. To supply water to an appliance
2. To supply water to a firefighting line

Question 2

What are the 4 main types of above ground hydrants?

Answer 2

1. ‘L’ Type
2. Pillar
3. Millcock
4. Rural Standpipe

Question 3

List every component of a Div A standpipe. (14 parts in total)

Answer 3

• Operating handle
• Spindle
• Head piece
• 65mm Storz coupling
• 65mm Storz blank cap
• Top boss
• Shipping handles
• 65mm diameter alloy barrel
• Male thread
• Bottom boss
• Wing nuts
• Collar
• Washer
• Cup valve

Question 4

List every component of a Div B standpipe (13 parts in total)

Answer 4

• Spindle handle
• Stuffing box
• Head
• Blank Cap
• Collar
• Shipping handles
• Barrel
• Spindle
• Spindle Thread
• Lugs
• Foot
• Bell
• Washer

Question 5

Explain why black top ‘L’ type hydrants should not be used for firefighting.

Answer 5

They may be very high pressure or dry.