乖乖趴下张开腿调教打屁屁欧美国产日韩在线观看视频了吗|日本 片 成人 在线观看|人妻少妇乱|国产一区二区欧美日韩在线观看|亚洲熟女av日韩熟妇av|饥渴少妇打野战在线播放|chinese丰满熟妇video|国产av综合自拍|奶子被舔的好爽|少妇人妻200篇,别揉我奶头啊嗯闺蜜,日韩射精一区,国产对白av一区二区

1. Pressure rating 15,000psi standard 60,000psi on request.

2. Standard design of stellite trim, Other alternative materials available on request.

3. Gland packing Graphoil,PEEK

4. Non-rotating stem tip.

5. Rolled machined spindle drive thread.

6. Drive thread is up the gland seal, gland seal completely isolate with the drive thread.

7. Back pressure seal function.

8. Low-in & high-out flow type.