Effect Analysis of Design Variables on the Disc in a Double-Eccentric Butterfly Valve

Table 4

Analysis results on the effect of the design variables on the pressure drop.

	Level 1	Level 2	Level 3	Level 4	Deviation	%	Rank
𝑥1	−44.21	−44.68	−45.22	−45.75	1.54	95.7	1
𝑥2	−44.99	−44.96	−44.95	−44.97	0.03	1.8	3
𝑥3	−44.99	−44.95	−44.97	−44.96	0.04	2.5	2
Total					1.61	100