1. 尺寸: NPS 1/2"-12"

2. 压力: Class 150-1500

3. 材质:

- a) 1/2" - 2": A105, LF2, F11, F22, F5, F304, F316, F304L, and F316L

- b) 2" - 12": WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, and CF8M

4. 结构: S-pattern, oval pattern, throttle pattern

5. 操作方式: 手轮, 齿轮,气动, 电动.