| 1. | All valve seats and seat discs shall be replaceable
所有阀门阀座和阀座阀瓣应该是可更换的。 |
| 2. | Seat discs shall be reversible to extend check valve life
阀座阀瓣应该是双向的，能够延长止回阀寿命。 |
| 3. | Backseat ? machined bonnet stem bushing provides back - up stem seal
后座-经过精密加工的阀盖阀杆衬套实现后座阀杆密封。 |
| 4. | To clean ; remove bottom plug , seat spring , strainer and seat disc
因此要清洗，拆卸底部塞、阀座弹簧、过滤器和阀座阀瓣。 |
| 5. | Seats and seat discs shall be replaceable without the use of special tools
阀座和阀座阀瓣应该是可更换的，不需要特殊工具。 |
| 6. | Clean or replace and reassemble , making sure seat disc is centered in hole
清洗或更换和重新组装，确保阀座阀瓣位于孔的中心。 |
| 7. | Seats and seat discs shall be replaceable without the use of special tools
阀座和阀座阀瓣应该是可更换的，不需要使用特殊工具。 |
| 8. | Three - way valve is used to replace two single - block , the first valve input system
三通阀最早是用于代替两台单座阀投入系统使用。 |
| 9. | Conical seat valve
锥形座阀 |
| 10. | Three - way valve has three entrances and pipes , equivalent to two single - block valves synthetic one
三通阀有3个出入口与管道相连，相当于两台单座阀合成一体。 |
