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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...

Hi LittleInch Venting product is natural gas.Due to the support height we are planning to have side tapping.Here there is no restriction of space but the product is gas.Here it connected to cold vent stack. Also i noticed that for flare header line tapping are from top at 45 degree.Can u...

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.

Hi Weldstan Can you plz provide more details.

Hi Metengr Vendor not provide any test result for for A694. Vendor clarify whether A694 F60 can offer instead of A350 LF6 Cl2 material.Can we use "A694 F60" as low temperature 60K material.

Hi Metengr As per piping material specification the flange material shall be low temperature 60K material for 10000 Class (API 6A).Design code is ASME B31.3.Vendor offer ASTM A694 F60 material.Can i accept the material.

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 Thanks alot. Its a pipeline full bore fanged piggable ball valves which will be normally closed(produced water with high chloride content 140K ppm).As per Client requirement the seat material shall be RPTFE minimum.

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#

we used forged material for valves trim.But for this project vendor is offering bar material for ball other are forged material. Plz clarify the disadvantage of bar over forged material for 16" full bore 150# ball valve

Hi Peter The service is produced water around 143K of chloride content.So the material for the trim is selected as SDSS with Carbon steel body(6mm CA).The valve size is 16" (full bore) design for 150#.The inspection level is II.

Hi Ball Valve is 16" full bore valve design for 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...

Bolting-ASTM A193 Gr.B7M /ASTM A194 GR.2HM Zn plated +FLUOROPOLYMER coated. But vendor offer HDG + XYLAN 1070(Green).As per datasheet our requirement is Zn plated with fluoropolymer coating. Instead of this vendor offer is hot dip galvanized with xylan 1070 coat

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...