Hello all,
i just wanna know some deeper stuffs on how the casting shrinkage in solidification stage works and what are the factors which affecting it.
like we design sand casting pattern/dies and for steel we use 1.5% shrinkage as per industry norm on pattern. but while inspecting we find that...
Hello all,
i need some guidance on solving a numerical problem, we are currently doing packing compression test as per API 622, picture attached below of sketch of test setup fixture.
as u can see in picture, packing is compressed by tightening bolt & nut which is putting force on spring through...
Hello to all,
i need some clarity and healthy discussion of one design change intitation which i want to implement on 2-piece ball valves.
as shown in two pictures, there's gland flange bolting of 2-piece 50mm class 150 cast steel floating ball valve, as shown there currently gland flange...
hello to all,
we have pretty huge range of valves & pipe fitting products. our company potentially looking to sell products in Australia/new zealand markets.
i have come to know that we need to comply with water supply code of AUSTRALIA/NEW ZEALAND,WSWA. if i talk about specific standard, it is...
Hello to all,
i have one minor doubt which sound bit naive to you, i have a flange input design condition and need to design based on that.
this is butt welded flange with design pressure, temprature and size given.
But there is one more input which is written WT=25.4mm, what does this mean?
hello to all,
i am attaching image below which showing thermoplastic transparent cap part thread jointed with a stainless steel body, product name is pressure reducing valve.
so in the image there is visible crack marked with blue.
this crack appear very later after assembling with stainless...
Hello all,
i need some clarity about repair welding of valve, like as cast carbon steel valve allow repairs to be weld,
so in case of any allowable repair casting defect on the side flanges. are we allowed to do the repair welding on flange?
one of my colleagues says that its not permitted to...
hello,
Can someone guide me how to calculate external axial force and bending moment on bolted flange connection. I have all the flange design input parameter, Design as per ASME SEC. VIII, but I also need to consider external load and bending moment acting on flange in the calculation, Anyone...
hello all,
i have requirement of designing a non standard flange as per ASME SEC. VII DIV. 2 part 4. can anybody enlighten me that in the flange design point of view what's the difference between DIV.1 and DIV.2. like, i had kind of good knowledge in designing flange as per ASME SEC. VII DIV.1...
hello to all,
I have calculated no. of bolts of body/bonnet joint of a valve according to ASME B16.34 clause 6.4.1.1 equations and ASME SEC. VIII DIV.1 APPENDIX 2 set of equations.
but I got the very different answers in which as per B16.34 i got minimum 8 no. of bolts required and as per ASME...
Hey to all,
i have one general query is that is there any clause or article in any valve design standard which talks about which pressure rating CLASS valve suitable or equivalent to which pipe schedule?
actually we are making CLASS-900 Butt welded end steel globe valve that it is suitable for...
Hello to all, i have one query which generated due while we executing one order, we need to make a spindle say 15 mm finished dia. and 150 length of aluminium bronze grade, i want to ask if we first cast the Raw bar and then forge it in forging press. would they able to match up the...
hello to all,
i am actually bit confused on one clause of BSEN 1873 standard. i have attached picture of it which talks about seating surface requirements in BSEN 1873.
i actually want to confirm that can we weld deposit of 13% cr. or Hardfacing on WCB graded body, which will act as integral...
Hello to all,
i have attached picture of my problem which i am facing while importing IGES format file in ansys. it's industrial control valve body, when i am improting in ANSYS its shape gets distorted drastically.
i am actually newbie in FEA world, i am 3d cad modeler but also at the moment...
hey all,
let me first give detail of my query, i am designing a flange end valve fitting, it's DN 40 size CL-300 pressure rating. for body & bonnet round flange connection i have choice to either use tapped hole in flange with other side stud holded by nut or through hole in flanges with both...
hello to all,
this is bit beginner question but i want to know the design calculations of spring for choosing any particular safety valve application.
calculation in such a way that also gives me data of spring range we can use for maximum and minimum pressure in safety valve.
there are several...
hey to all,
i want to know some platform where i can learn ANSYS in efficient and detailed way. i am graduated in mechanical engineering. so i can say i am fundamentally good in my core field. right now, i am working as a design engineer but in my company they don't use Ansys or any kind of FEA...
Hello to all,
i actually work in valves & steam equipment industry. i have been assigned task to compare BRONZE/BRASS V/S Stainless Steel(SS) Material in valves & steam equipment industry. based on mechanical, chemical, physical properties, availability and all other criteria we need to access...
Hello,
can anybody help to identify material grade just by material composition. i tried a lot but still couldn't be able to find exact grade.
carbon - 0.32% , silicone - 1.1% , manganese - 1.7% , chromium - 12.7%, molybdenum - 0.04%, Phosphorous - 0.02% , sulphur - 0.008%, nickel - less than...
hello to all,
this is actually my first post in pressure vessel forum. i am actually a valves design engineer. our company wants to design a pressure vessel for safety valves testing(setting/adjusting desired pressure on steam flow). the pressure vessel will be connected to boiler through pipe...
