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

Claim 13:
14. The fluid end according to claim 11, further comprising a first valve assembly and a first guide portion, wherein the first valve assembly is located in the pressure-alternating chamber, and the first valve assembly is configured to communicate the low-pressure chamber with the pressure-alternating chamber upon being opened, or configured to separate the low-pressure chamber from the pressure-alternating chamber upon being closed,
the first valve assembly comprises a first valve-body, a first seal, and a first valve seat; the first valve seat is annular and comprises a first intermediate bore, the first intermediate bore is configured to allow fluid to flow therethrough,
the first valve-body comprises a first main portion, and a first guide rod and a second guide rod which are arranged at two sides of the first main portion, respectively; a part of the first seal is embedded in a first groove of the first main portion,
the first valve seat and the first guide portion are located in the first cavity, and the first valve-body is not in contact with the valve casing.