How do kinks and bends affect pressure along a hose lay?

• A. They have no effect on pressure.
• B. Kinks and bends create extra friction losses at constrictions, increasing pressure drop and reducing effective flow if not managed.
• C. They decrease turbulence.
• D. They increase flow.

Answer: (B)

Kinks and bends add resistance to the flowing fluid. When the hose path isn’t straight, the fluid must follow a curved or constricted route, which creates minor losses in addition to the straight‑length friction losses. These losses come from turbulence, flow separation, and energy dissipation at the bends or constrictions, so the pressure drops more across each bend than along a straight segment. In a hose lay, that means the pressure falls more than expected as you go through bends, and the overall flow can be reduced if the pump or supply isn’t able to overcome these extra losses. So kinks and bends increase the pressure drop and can reduce effective flow if not managed.