PQ340H, PQ340Y ハードシール偏心ボールバルブ
The PQ340H/Y hard-seal eccentric ball valve utilizes an eccentric valve body, eccentric ball, and valve seat. As the valve stem rotates, it automatically centers itself along a common trajectory, tightening further during closing to achieve a perfect seal. The 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 ball in traditional ball valves. Non-metallic elastic material is embedded in the metal seat, providing excellent protection for the seat’s metal surface. This product is particularly suitable for media in the steel industry, aluminum industry, fiber, small solid particles, pulp, coal ash, and petroleum gas.
製品名: Hard Seal Eccentric Ball Valve
製品型式: PQ340H, PQ340Y
呼び径: DN15～DN2200
構造: 球状
呼び圧力: 1.6Mpa～32.0Mpa
接続方法: フランジ
適用温度: -20ºC～+180ºC～350ºC～550ºC
作動方法: マニュアル, Worm Gear, 電気, 空気圧
バルブボディ材質: 炭素鋼, 鋳鋼, WCB, ステンレス鋼
製造基準: GB (中国国家規格), から (ドイツ規格), API (アメリカンスタンダード), ANSI (アメリカンスタンダード)
対象メディア: 水, 油, Slurry, Sewage, ガス, 液体
メーカー: 浙江Kozoバルブ社, 株式会社.
Structural Features
1. The valve seat features an external step that mates with the internal step of the valve body, preventing the ball from jamming or disengaging from the seat.
2. Utilizing an eccentric valve body, eccentric ball, and valve seat, the valve stem automatically centers itself along a common trajectory during rotation. During closing, the valve tightens further, achieving a perfect seal. したがって, the eccentric hemispherical valve offers reliable and safe sealing performance. During valve opening and closing, the ball completely disengages from the seat, eliminating wear on the sealing surface and overcoming the problem of constant wear between the valve seat and ball sealing surfaces in traditional ball valves.
3. Non-metallic elastic material is incorporated into the metal seat, providing excellent protection for the metal sealing surface.
4. The hemispherical design creates a shearing effect between the ball and seat, making it particularly suitable for media containing fibers, small solid particles, and slurries.
5. 全開時, it offers high flow capacity, low pressure loss, and prevents media from accumulating in the valve body cavity.
6. This product has precise adjustment and reliable positioning functions, the flow characteristics are approximately percentage, the adjustable range is large, and the maximum adjustment ratio is 100:1.
Execution Standards
設計と製造: GB12237-89
Flange Connection: GB/T17241.6998, GB/T9115 (鋼鉄)
構造長さ: GB12221-89
Pressure Test: GB/T13927
Performance Parameters
呼び圧力 (MPa): 0.6 1.0 1.6 2.5 4.0
呼び径 (mm): 40-600 40-600 40-600 40-600 40-600
Sealing Test Pressure (MPa): 0.66 1.1 1.76 2.75 4.4
Shell Test Pressure (MPa): 0.9 1.5 2.4 3.75 6.0
適用温度 (°C): -29～300, -29～425, -29～540
対象メディア: Clean water, seawater, sewage, 酸, アルカリ, 液体, スラリー, スチーム, fuel gas, 油
駆動方式: マニュアル, 電気, 空気圧
Connection Type: Flange connection, Wafer connection
Installation Method: Vertical installation, Horizontal installation
