Patent ID: 11867171
Assignee: YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The fluid end according to claim 10, wherein the inner chamber comprises a pressure-alternating chamber, a low-pressure chamber, and a high-pressure chamber; the pressure-alternating chamber, the low-pressure chamber, and the high-pressure chamber are sequentially arranged in an axial direction of the valve casing, the second end is located in the high-pressure chamber, the first opening is located in the low-pressure chamber, the first end and the second opening are located in the pressure-alternating chamber, the second opening is communicated with the pressure-alternating chamber, the valve casing comprises an inlet bore and an outlet bore, the inlet bore is communicated with the first opening, and the outlet bore is communicated with the high-pressure chamber.