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If you have an application, I could have a look at it for you? I realise I have to be careful here as I realise I must not promote or sell on this site.

Hi Glenfiddich, The discharge from an Ejector is not necessarily saturated. This depends on a number of things, including the condition and quality of the motive gas. I do take your point however about winter ambient and the length of any discharge line.

Have you considered using Ejectors (Also known as Eductors, Jet Pumps) for vapour recovery. They have been succesfully used to eliminateand recover flare gasses as well as waste gas, both offshore and on-shore.

I have been involved with both vacuum pumps and Venturi Devices (Ejectors) and vacuum pumps for over 25 years now. In terms of thermodynamic efficiency, there is no contest. The vacuum pump will win every time. But, when selecting a vacuum producer, thermodynamic efficiency is not the only...

Thanks arunmao. Our client has asked us to design and manufacture an Ejector (also known as an Eductor, or Jet Pump or Venturi or Jet Compressor), using this material for an onshore oil and gas facility in Canada.

We are a company based in the UK and one of our Canadian clients has requested one of our products in Material Z245.1 Grade 3592. We dont recognise this at all. We have "googled" it and still not found anything positive. Could someone please tell us something about this material. What basic is...

Does anyone know of a training provider, preferably based in the UK, for the ASME B31.3 piping code. Thanks in advance.

Can anyone tell me if there are any issues in designing/fabricating pressure equipment (small vessels and piping items) using stainless steel 316 (not 316L) for the following:- The mechanical codes are either ASME VIII div1 or ASME B16.3. Design Temps: Two Options a)538 Deg. C. b) 590 Deg. C...

Can anyone tell me if there are any issues in designing/fabricating pressure equipment (small vessels and piping items) using stainless steel 316 (not 316L) for the following:- The mechanical codes are either ASME VIII div1 or ASME B16.3. Design Temps: Two Options a)538 Deg. C. b) 590 Deg. C...

Dear Scooter911, Thanks for sharing the benefit of your experience. Could you please let me know the minumum temperatures at which you have experience of the 304/Teflon Flexitallic gaskets, the pure Teflon gaskets and Garlock gaskets. Did you go as low as -257C? Thanks in advance.

I have worked with a client in the natural gas industry who limited gas line velocities to a max of 35 m/s purely to prevent corrosion inhibitor being stripped off the internal surfaces. This fits with the 30 m/s mentioned in a previous post.

We are based in the UK and we have a project to manufacture some in-line piping items from material 1.4306. Typical size of these items ranges from 2" up to 12" and I am trying to source a number of W/N flanges, fittings, plate and bar in this material. Does anyone know of any suppliers who I...

Ive been following this thread. Clearly because there is no available pressure drop across the "venturi" (100psi in & 100 psi out) then this rules out the use of such a device. If you can tolerate a lower pressure than 100 at the outlet, then a "venturi" device could come into play. For...

Thanks. But can you provide any advice on the type of sealing face and gasket that can be employed. Is there a flange standard appropriate to these conditions. (Incidentally, 300Lb R/F has been specified but I am hesitant to use a standard raised face flange - I have insufficient evidence to...

I am involved in a project to design pressure equipment handling either Nitrogen, Hydrogen, Oxygen or a mixture of these - all at very low temperatures. These will all be in gaseous form within the equipment and in the connecting piping. The design temperature of the equipment and piping is...

I am involved in a project to design pressure equipment handling either Nitrogen, Hydrogen, Oxygen or a mixture of these - all at very low temperatures. These will all be in gaseous form within the equipment and in the connecting piping. The design temperature of the equipment and piping is...

metengr, Thank you for the excellent advice.

Dear metengr, Thanks for the info. I checked ASME B31.3, Appendix A, table A-1 and saw that the minimum temperature for either 304L or 316L is stated as -425F which is just short of the -430F which I need. Do you have any further advice? Thanks in advance.

I am involved in a project to design pressure equipment handling either Nitrogen, Hydrogen, Oxygen or a mixture of these - all at very low temperatures. These will all be gaseous within the equipment. Design temperature is -257C/-430F, design pressure is 20 barg. Could someone please suggest...

Could anyone explain what makes a Carbon Steel HIC Resistant? I am involved in a relatively small fabrication in the UK, where the materials of construction are specified as ASTM A333, A350 LF2, P355, A420 WPL6 but the materials are also specified to be "HIC resistant Carbon Steel". What steps...