PQ340H, Van bi lệch tâm cứng PQ340Y

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.

Tên sản phẩm: Hard Seal Eccentric Ball Valve

Mẫu sản phẩm: PQ340H, PQ340Y
Đường kính danh nghĩa: DN15～DN2200
Structure: hình cầu

Áp suất danh nghĩa: 1.6Mpa～32.0Mpa
Phương thức kết nối: mặt bích

Nhiệt độ áp dụng: -20ºC～+180ºC～350ºC～550ºC
Phương pháp kích hoạt: Thủ công, Worm Gear, Điện, Khí nén

Vật liệu thân van: Carbon Steel, Thép đúc, WCB, thép không gỉ
Tiêu chuẩn sản xuất: GB (Tiêu chuẩn quốc gia Trung Quốc), TỪ (Tiêu chuẩn Đức), API (Tiêu chuẩn Mỹ), ANSI (Tiêu chuẩn Mỹ)

Phương tiện áp dụng: Nước, Dầu, Slurry, Sewage, Khí đốt, Chất lỏng
nhà sản xuất: Công ty Van Kozo Chiết Giang, Công ty TNHH.

Đặc điểm kết cấu

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. Vì thế, 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. When fully open, 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
Design and Manufacturing: GB12237-89
Flange Connection: GB/T17241.6998, GB/T9115 (Steel)
Structural Length: GB12221-89
Pressure Test: GB/T13927