xxxwww日本-xxxwww日本高清-xxxww中国-xxxx69日本在线观看-欧美人在线一区二区三区-欧美日b

1. Designed for the most arduous of service conditions.

2. Bonnetless one piece forged body, no weld and bolts stress components.

3. Y pattern body improve flow capability and reduce resistance.

4. Integral Stellite Grade 6 cone and Stellite Grade 12 seat have good red hardness and

 scouring resistant characteristics on high temperature.

5. Non-rotating spindle design ensure cone and seat without milling during open or close , 6. Eliminates galling to the seal surfaces, increase service life.

7. Combination filling seal.

8. Heavy two-piece gland bushings.

9. Short and narrow packing chamber.

10. Unique, fully-enclosed spindle drive system.