四川少妇搡BBW搡BBBB,娇BBB搡BBBB揉BBBB,嫩BBB槡BBBB槡BBBB,另类老妇性BBWBBW,凸凸凹BBWBBWBBWBBW,女BBBB槡BBBB槡BBBB,日产精品一线二线三线区人妻激情偷乱视频一区二区三区_国产精品永久久久久久久久久日韩少妇内射免费播放_日韩精品人成在线播放97人妻人人揉人人躁人人_色偷偷888欧美精品久久久无码人妻AV免费一区二区三区 ,精品人妻人人做人人爽-国产亚洲av一区二区三区-国产精品白浆无码流出-国产强奷在线播放-伊人久久综在合线亚洲2019 ,国产精品成人第一区_亚洲人成影视在线观看_91香蕉国产线在线观看免费_亚洲国产精品综合一区在线_国产欧美日韩综合精品久久久_亚洲国产精品成人综合片_成人亚洲国产欧美另类_亚洲欧美日韩日本国产综合

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.