Variation of ΔPsw and ΔPcr with the supply pressure Ps is shown in Figure 11. From Figure 11, it can be seen that the trends of both curves of the theoretical calculation and the experiment are coincident and the ΔPsw as while as the ΔPcr are increasing with the increase of supply pressure Ps. Considering the results shown in Figure 7 to Figure9, we know that ΔPsw also varies with Pc in
receiver