带阀杆密封螺纹衬套的 AVR 截止阀和带阀杆密封金属波纹管的 AVB 截止阀。
截止阀
GEA shut-off valves (AVR, AVB, AVR/AVB also with electric) are designed for installation in industrial heating and refrigeration systems. The stem sealing is provided either by a threaded bush (AVR type) or by a threaded bush with an additional metal bellows (AVB type) to ensure a complete hermetic sealing. Electric actuator AVR/AVB are powered by an electric motor connected to the stem. The valves can be operated by a hand wheel or a ratchet attached to the stem. By turning the stem clockwise, the valve disc is lowered onto the valve seat, thereby closing the valve. Counter-clockwise rotation of the stem raises the valve disc, opening the valve. Shut-off valves should only be operated in the fully open or fully closed position. When the valve is fully opened, it is possible to replace the threaded bush and the seal. The valves are equipped with a back seal. When the valve is fully opened it is possible to replace the threaded bush and the sealing.
Shut-Off Valves type AVB
技术特征
- 采用钢或不锈钢
- 根据德国 DIN EN12284、AD2000 系列 W 选择阀体材料
- 工作介质：符合EN 378-1的乙二醇基冷盐水制冷剂以及与冷冻机油的混合物；中性、气体和液体介质；乙二醇基冷盐水
- 安装位置：任意位置
| AVB截止阀 | AVR截止阀 | |
| 设计 | 直线型或角型 | 直线型或角型 |
| 材料 | 钢或不锈钢 | 钢或不锈钢 |
| 标称尺寸 | DN 10-300 | DN 6-500 |
| 标称压力水平 | PS 25, PS 40 | PS 25, PS 40, PS 63, PS 160 |
| 温度范围 | -60 °C 至 +150 °C | -60 °C 至 +150 °C |
| 连接 | 对焊端 DIN, ANSI 法兰端 DIN, ANSI 焊接端 螺纹端 | 对焊端 DIN, ANSI 法兰端 DIN, ANSI 焊接端 螺纹端 |
| 其他 | 盖板延长件 | 盖板延长件 |
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