You'd better check the pressure-flowrate profile. 2 B1 u8 k* P5 A" L3 l
Moreover, you didn't say what kind of pump you used2 w; v# Z8 ?4 b( {+ G+ `/ T7 k
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if for variable displacement pump or others / d& _0 G3 d2 b6 H6 vOnce you change your device to 45cc then the deadhead pressure changes9 e4 u9 [5 H4 p1 [: F
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cause more problem.