EQ340H/EQ347H Hard-seal eccentric ball valve Cast iron, 鋳鋼, ステンレス鋼
名前: Hard Seal Eccentric Ball Valve
Model: EQ340H/EQ347H
Diameter: DN15-DN800
プレッシャー: 1.6MPa-6.4MPa
材料: Cast Iron, 鋳鋼, ステンレス鋼
認証: ISO9001:2000
The hard-seal eccentric hemispherical valve utilizes an eccentric valve body, 偏心ボール, そしてバルブシート. バルブステムが回転すると, 共通の軌道に沿って自動的に中心に配置されます, 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. 非金属弾性材料が金属シートに埋め込まれています, バルブシートの金属表面に優れた保護を提供します。. This product is particularly suitable for media such as steel, aluminum, 繊維, 小さな固体粒子, パルプ, 石炭灰, と石油ガス.
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, resulting in a large flow cross-section and preventing valve erosion. 閉店中, the valve core is also prevented from being eroded. During opening, the spherical surface of the valve core gradually moves along the valve seat, effectively removing scale buildup and achieving a reliable seal. 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, 母材に異なる合金を溶接したもの. バルブシートもそれに合わせて溶接され、特殊処理が施されています. The sealing surfaces are combined into various types, including corrosion-resistant, 耐摩耗性, そして高強度, 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. さらに, 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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