Dear unclesyd!
Thank you for your early reply
But, this is sad news, if we must be size up from DN25 to 1/2DN of the test valves to upstream pipe work...
I recieved any technical papers from SWRi(South West Research Institute). pls, find attached file and see Figure 1, (B)
Shall I refer to...
Dear Every engineers
We have a fire safe test facility and will fire safe test according to API 607_5th two weeks from now.
but, we have any problem for apparatus such as upstream pipework.
API 607_5th mention that "The test equipment shall be designed so that if the nominal diameter of the...
Generally, PTFE seats for floating ball valve can withstand to high differential pressure up to 725 psig at 100'F
but, I guess that downstream seats damaged at your existing differential pressure(600 psi).
I strongly recommend to change a seat design in my experiences(reinforce a strength and...
we have ever used to A193 B7 bolt & A194 2H hex nut in our valve products
but, we have a any problems to purchasing of hex nut such as A194 2H from our vendors
so, we would like to change a material from A194 2H to ISO metric grade nut 12(10.9)
Is it possible?
pls, give a correct interpretation
