Dear Pipers,
Came across a request from 'End-User' to the use of 'Spiral Wound Gaskets with Inner Ring_ASME B16.20' in place of existing 'Flat Ring Gaskets_ASME B16.21'.
It was briefed on the limitations for the use of "Spiral Wound Gaskets with Inner Ring_ASME B16.20" to thin wall pipes, in...
Dear All,
Have come across a query on the need for PWHT on cast body. Need your expert opinion.!!!
However, as per code requirements and per specific client needs, any cast imperfections with weld repairs (or) structural welding of any cast valve component that will be in contact with sour...
Have a scenario, where I had to weld a 2" piping connection (through HOT TAP) on to an 24" A234-W elbow, oriented in skewed direction, i.e., elbow rotated in 2 plane.
would like to explore the feasibility of executing hot tap of 2" connection anywhere in the surface of the elbow or is there a...
Dear All,
During my review of an material test certificate of A516 Gr70 plate material,the supplier has qualified the UT testing of a plate to level B. I raised a query of why not qualified for level C, which is the stringent one and as required by ASTM A20 requirement also. However received an...
Does 100% radiography a mandatory requirement for standard class valves, 150 LB fire water service valve with cast steel body??
As per ASME B16.34, it states that, radiography is a mandatory requirement for Special class valves, so, can we interpret this statement that, no radiography is...
Dear All,
I came across a clarification / query on one of the Y-type strainer used for the seawater services.
The thing is, the body of the strainer is Cast steel with internal EPOXY coating to protect from corrosion, as the service is seawater. but the drain plug on the strainer, which is...
Dear All,
I had been through a case where, the 6" ball valve, trunnion mounted was erected with gear operator. But, after the commissioning, the operation team of the plant is asking for valve access from the platform located 1.5 meters above. Even the provision of platform is very difficult to...
Dear all,
I know that, many threads explain about the selection of seat material and its pressure and temperature ranges for specific fluid services. Also many vendor charts show the Seat material specifications and its limitations with respect to the pressure and temperature.
However, my...
Hi all,
In one of our projects, we requested to VENDOR for a Fire test Certificate for the Metal seated check valves. But the VENDOR replied that, metal seated valves are intrinisically fire safe and no fire test is applicable.
But when i had gone through the API 6FA / ISO 10497, they mention...
Dear All,
I came across a question from one of my colleague, asking for the Design life factor for the Newly Designed Pipe.
ASME B31.3, section 304.1, doesn't say anything about the design life consideration for a Newly calculated pipe wall thickness ( Allowance consideration is there for...
Hi all,
Recently i came across a thing, where we selected RPTFE as the seat material for trunnion mounted ball valve with an operating conditions of max. temp 53 deg C and pressure upto 16.9 barg.
However, the VENDOR has provided / suggested DEVLON seat material against the one we have...
Hi all,
In one of our projects, we are using soft seated ball valves, with the requirement of fire testing in accordance with API 607.
When i had gone through the API 607, i observed that the valves would be under flame at 760 Deg celcius for 30 minutes times and shall be checked for the...
Hi All,
To identify the leakage rate for all the valves, which standard to be reffered.? i had a confusion on whether to refer to API 598 / BS EN ISO 15848.
going through these standards, i understand that, ISO 15848 deals with stem seal leakages and API 598 deals valve seat leakages. hence...
Hi all,
This is a requirement from the client to bury the Firewater line under the ground. The pipe material to be used is galvanized pipe and is jointed by flanges. please advise me on the wrapping required for the flanges, which is buried.
Hi,
i came across a query from VENDOR for the datasheet i prepared for the Butterfly valves,indicating the requirement of UL and FM approval. my requirement is Butterfly valve, Double flanged type, EPDM lined, to be used in Sea water applications with UL and FM approved.
But vendor replied...
Hi,
please let me know, whether, the Inspection and testing requirements of valves shall be done for each material of heat or shall be carried for the same heat number. As because, no VENDOR is coming forward to supply with these requirements in limited span of time.
