Hard intake hose is primarily used in drafting operations and ranges in size from __________ to __________ inches.

Hard intake hose is primarily used in drafting operations and ranges in size from __________ to __________ inches.

• A. 1-2
• B. 2-3
• C. 2.5-6
• D. 6-9

Answer: (C)

Hard intake hoses are used for drafting because you need to move a large volume of water from a source into the pump. To keep the flow high and friction losses manageable, the hose diameter is kept in a practical range: about 2.5 inches up to 6 inches. Smaller hoses would restrict flow too much and quickly demand more pump pressure, making drafting inefficient. Hoses larger than 6 inches are heavier and harder to handle for typical drafting setups, so 2.5–6 inches covers the common, workable range.

Hard intake hoses are used for drafting because you need to move a large volume of water from a source into the pump. To keep the flow high and friction losses manageable, the hose diameter is kept in a practical range: about 2.5 inches up to 6 inches. Smaller hoses would restrict flow too much and quickly demand more pump pressure, making drafting inefficient. Hoses larger than 6 inches are heavier and harder to handle for typical drafting setups, so 2.5–6 inches covers the common, workable range.