Top Entry Ball Valves
Product Description
Product description |
Top-entry ball valve |
Model/td> |
Q40F top-entry ball valve |
Nominal diameter |
NPS 2~NPS 40 |
Operating temperature |
-46℃~121℃ |
Operating pressure |
CLASS 150~CLASS 2500 |
Material |
WCB、A105、LCB、LF2、CF8、F304、CF8M、F316, etc. |
Design standard |
API 6D、ISO 17292 |
Structural length |
ASME B16.10 |
Connecting end |
ASME B16.5、ASME B16.25 |
Test standard |
API 598、API 6D |
Operation method |
Manual, worm, pneumatic and electric |
Application fields |
Water, petroleum and natural gas |
Other remarks 1 |
Parts such as bonnet, ball, valve seat, valve stem, etc. can be dismounted and installed online to realize the online repair function. |
Other remarks 2 |
A locking device is provided to prevent misoperation of valve. |
Other remarks 3 |
Valve stem flyout prevention structure design, to prevent accident due to flyout of valve stem caused by abnormal pressurization in the chamber |
Other remarks 4 |
Fireproof and antistatic design |
Other remarks 5 |
The valve stem and the valve seat are equipped with an injection system. |
Other remarks 6 |
DBB (double block and bleed) function |
Integral structure
The body adopts the intergral structure,so as to ensure that is has enough strength and rigidityunder the maximum rated working pressure,the valve trims have been carefully designed and selected to ensure reliability under various service conditions.the sufficient wall thicnkness and the connection bolts,of high strength are very helpful to the maintenance and servicing of valves are able to endure pipeline stress
Top entry structure
The valve adopts the top entry structure,the most distintive difference between this kind of valve and others is that the online maintenance function can be realized without the need of removing the valve from the pipeline,the seat adopts the concession type seat structure,and the rear end of the seat retainer is set as oblique angle to prevent impurities accumulated on the seat from influencing the concession of seat