Dear All
For project requirement 2" drain point to be provided by hot tapping. Can it possible to provide a 2" drain point by hot tapping. Please provide the details. Thanks in advance.
Dear All
For a brown filed project, the existing RF flange roughness was 6.3-12.5 micrometers. But the new mating flange roughness is 3.2 - 6.3 micrometers. The existing gasket was flat ring as per ASME B16.21. Please clarify whether Spiral Wound Gasket can be used as a gasket for these flanges...
Hi All
As per project requirement ball valve design shall be API6D.So order placed based on API6D(QSL 1 level). Now client required QSL3 without any change order. Plz anyone clarify how to select each level. As my understanding QSL1 is the default as per API6D.So Vendor is offering the same...
Please clarify whether if any design issue will happen if connect the branch vent line as a side tapping connection to the vent header.The vent header will connect to the cold vent stack. Is any requirement that the vent connection shall be only from top tapping.
As per project requirement the flange material shall be ASTM A350LF6 Cl2 material. But based on Vendor material test report the percentage of nitrogen is not as per standard requirement (percentage of nitrogen is low than the standard).As per standard only LF6 grade have the nitrogen percentage...
Hi All
The design temperature is for our project is -68 degree C.The material selected is ASTM A333 Gr.6.As per my understanding impact test temperature for ASTM A 333 gr.6 is -45 degree C.Please clarify whether impact test can be done at -70 degree Celsius for ASTM A 333 Gr.6 material.
Hi All
The design temperature is for our project is -68 degree C.The material selected is ASTM A333 Gr.6.As per my understanding impact test temperature for ASTM A 333 gr.6 is -45 degree C.Please clarify whether impact test can be done at -70 degree Celsius for ASTM A 333 Gr.6 material.
HI
For Full bore ball valve (16"sour service- piggable line) the seat insert is RPTFE. But vendor is offering Devlon instead of RPTFE. Plz clarify whether Devlon can be accept instead of RPTFE. Design condition is -3/120 C and pressure class is 150#
Hi
As per ball valve datasheet body material is carbon steel(A105) but the trim is super duplex stainless steel( UNS S32750). Please clarify whether positive material identification is required for super duplex material for valve internals parts.The the body material is carbon steel only(no...
Hi All
As per the valve data sheet (sour service)the coating for bolts shall be "Zn +Fluoropolymer coating".But vendor offer is HDG+Xylan 1070. Plz clarify which one is better in quality.
Hi All
As per datasheet for pipeline ball valve(API 6D) ,the ball material is UNS S32750(SDSS). Only material grade is mentioned in datasheet. One Vendor is offering bar material(A276) for the ball but other vendor is offering forged material (A182 F53).As my understanding bar stock has a...
Hi All
As per datasheet for pipeline ball valve(API 6D) ,the ball material is UNS S32750(SDSS). Only material grade is mentioned in datasheet. One Vendor is offering bar material(A276) for the ball but other vendor is offering forged material (A182 F53).As my understanding bar stock has...
Hi All
Based on the FEED report the properties of produced water is Chloride 1,43,000 ppm and H2S 1000ppm. But material selected is CS with 6mm CA and Valve trim is SS316. I want to know is it possible to use SS trim with out any coating for this chloride content and for the pipe also no...
Hi Experts
As per FEED material specification it’s mentioned that for ball valve “BALL 150# RF STL, RP, DI, FS, 316 TRIM”.I want to know is it Body “CS+ STL with trim 10” or Body “CS with Trim 12”
Dear flange experts.
I´d like to know if it´s possible to mate ANSI B16.5 flat flanges with ANSI B16.1 flat face flanges.
I have carbon steel pipes with ANSI B16.5 A105, class 150 flat face flanges, and want to install betwen them cast iron valves with ANSI B16.1 flat face flanges
Hi
As per our PMS the trim is 13%Cr+HF but vendor offer 13%Cr+HFS. I want to know is both material are same or is it Trim 5(13Cr%+HF) and trim 8 (13%Cr+HFS).Plz help for a solution for this.
