For a orifice plate in pipe size 16" which type of taps are suitable? Flange taps or D,D/2 taps? is there any advantage of using D,D/2 taps in large pipe size? Thanks.
Hi
One of the orifice plate specification has following clause:
For Compressible fluids differential range in inches of water shall not exceed the normal upstream static pressure in psi absolute except that for exhaust steam.
My question is - why this is applicable only for compressible...
Hi
The job I am working on , specifications says tube fittings shall be rated for 9000#. I tried to find out 9000# rating corresponds to what pressure in psig/bar. Is there any standard for this where I can find the Table? Thanks.
Ball Valve material
In ongoing project we are procuring ESD ball valves of various class ratings i.e. 300 onwards up to 1500#. Client specification for ball material is ASTM A182 F316L or A351 –CF8M. Vendor from whom we are procuring these valves is unable to give this ball material for class...
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We are procuring well head control panel. Well head control panel will be mounted 30mtrs away from the manifold. Closing time required for the wing valve and SSV is 5 seconds. Well head panel manufacturer has quoted for quick relief valve / dump valves so as to meet closing time...
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What is meant by erosion index with relation to Choke Valve? I am doing evaluation for choke valves for oil and gas chokes. One of the vendors has indicated erosion index values for each choke valve. My question is
1.Is there a maximum limit of erosion index? Is it defined in any...
I have following scenario for a safety valve.
MAWP = 240bar g, set pressure = 240 bar g, operating temperature = 50 deg c, relieving temperature = 580 deg c., over pressure = 21% and valve body material is carbon steel. Vendor has calculated and selected 1.5D3 valve with 2500# x 300# rating...
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I have an application where safety valve set pressure is 240 bar g, relieving temperature is 529 Deg c and fluid is hydrocarbon gas. What are spring material choices in such case? Are there any guidelines for spring material selection?
Thanks.
Hi
For selection of ESD valve actuator supply, what are factors that decide whether ESD valve shall be hydraulic or pneumatic? What are advantages of Hydraulic valves?
Thanks.
Hi
I am not familiar with ESD valves and new to its design. What are the factors that determine the torque requirements of ESD valve actuator? In case of emergency how the torque is taken care of? Are there any arrangements(protection) in actuator which ensures that there is no shearing of...
Hi
I have 18" globe control valve to be installed on sea water line. However required upstream and downstream length is not available on platform. Whether use of straightner is allowed ? which kind of straightners can be used? or if starigthners are not allowed,what are options?
Thanks.
Cam72
