| 摘要 |
This device is designed for preventing cavitation of doubleacting piston and valve assembly, and for decreasing pumping force used in the operation of the piston-cylinder assembly. Valve body(10) comprises Y-shaped intake-chamber(12) and discharing chamber(14). The chambers(12,14) are connected with bore(16). Therefore, this device responds to pressure-difference of the first and second cylinder- chambers. |
