EQ340H/EQ347H Hard-seal eccentric ball valve Cast iron, thép đúc, thép không gỉ
Tên: Hard Seal Eccentric Ball Valve
Người mẫu: EQ340H/EQ347H
Diameter: DN15-DN800
Pressure: 1.6MPa-6.4MPa
Vật liệu: Cast Iron, Thép đúc, thép không gỉ
Certification: ISO9001:2000
The hard-seal eccentric hemispherical valve utilizes an eccentric valve body, quả bóng lệch tâm, và ghế van. Khi thân van quay, nó tự động tập trung vào một quỹ đạo chung, tightening further during closure to achieve a perfect seal. The valve ball and seat are completely separated, eliminating wear on the sealing ring and overcoming the problem of constant wear between the sealing surface and the seat in traditional ball valves. Vật liệu đàn hồi phi kim loại được nhúng vào ghế kim loại, cung cấp sự bảo vệ tuyệt vời cho bề mặt kim loại của đế van. This product is particularly suitable for media such as steel, nhôm, sợi, hạt rắn nhỏ, bột giấy, tro than, và khí dầu mỏ.
Features of the Hard-Seal Eccentric Hemispherical Valve
1. Its structure adopts an eccentric clamping principle, achieving the purpose of tightening, regulating, and closing through a transmission mechanism. The sealing pair is a metal-face ring with hard-face contact sealing. The double eccentric structure ensures that the valve core is located in the ball chamber during opening, dẫn đến tiết diện dòng chảy lớn và ngăn ngừa xói mòn van. Trong thời gian đóng cửa, the valve core is also prevented from being eroded. Trong thời gian khai trương, bề mặt hình cầu của lõi van di chuyển dần dọc theo chân van, loại bỏ hiệu quả sự tích tụ cặn và đạt được độ kín đáng tin cậy. It is particularly effective for mixed-flow conveying of two-phase flow systems prone to scaling and solid precipitation.
2. The valve hemisphere is made of bimetallic material, với các hợp kim khác nhau được hàn vào vật liệu cơ bản. Ghế van cũng được hàn phù hợp và được xử lý đặc biệt. The sealing surfaces are combined into various types, including corrosion-resistant, chống mài mòn, và cường độ cao, to meet the needs of different applications.
3. It provides a tight seal, achieving zero leakage when conveying harmful gases.
4. The valve core of the sealing pair has a compensation allowance. Even after the valve wears down, a slight rotation when closed will still ensure a reliable seal, extending its service life. Hơn nữa, users can unscrew the compression nut, adjust or replace the valve seat, and it will still be usable, avoiding the drawback of having to scrap the entire unit after valve seal failure.
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