Question

The loss of head at various pipe fittings is given by the expression $K\frac{V^2}{2g}$. If values of K were 0.40, 0.90, 1.5 and 2.2, then these would correspond respectively to

• A. $\text{Foot valve of pump,}{45}^{\circ }elbow,{90}^{\circ }\text{elbow and close return bend}$
• B. ${45}^{\circ }\text{elbow,}{90}^{\circ }\text{elbow, foot valve of pump and close return bend}$
• C. ${90}^{\circ }\text{elbow, foot valve of pump, close return bend and}{45}^{\circ }\text{elbow}$
• D. $\text{Foot valve of pump, close return bend,}{45}^{\circ }\text{elbow and}{90}^{\circ }\text{elbow}$

Answer 1

The correct option is B ${45}^{\circ }\text{elbow,}{90}^{\circ }\text{elbow, foot valve of pump and close return bend}$

Fitting type	K-value
${45}^{\circ }\text{elbow}$	0.4
${90}^{\circ }\text{elbow}$	0.9
Pump foot valve	1.5
Close return bend	2.2
Gate valve wide open	0.2
Globe valve wide open	10