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Thanks guys. I will coordinate with tech people and see what I can do. RVAmeche - We currently looking at API 610 pumps only.

Hi guys, When the process fluid is specified as TOXIC in the data sheet, it is required to use Dual Mechanical Seals? Could you explain the degree of toxicity of the process fluid for it to require dual seals rather than just a single seal. Currently I am working on data sheets where it...

Hi guys, In Plan 23, who normally dictates the cooling water requirements such flow, temp, pressure. Is it the supplier or is there also a section on API 682 where it dictates the CW requirements? Thanks, Virata

Hi Artisi, it's available. But I would like to also know if this is also the situation with required. Regards, Virata

Dear everyone, I want to consult you guys on this. I asked a package vendor (for a chemical injection package) to provide me both Differential Pressure and NPSH for the metering pump. However, the vendor says this is not required because the suction is flooded. See below: For the differential...

Thanks Pennpiper!

Hello there, Does anyone of you have an IOM of a Clyde Union OH centrifugal pump? Here is the pump model:SPXFLOW Clyde Union 3 x 4 x 16B pumps. We are needing this to look into how the impeller is being replaced at site. Thus, the disassembly and assembly notes from the IOM would greatly help...

Thank you LittleInch and bimr!

Hi guys, I have an ATEX-rated air operated double diaphragm pump including the air filter regulator and PSV. On the area classification plot plan, it is shown that it is under Cl 1, Div 2. My AODD is fine I believe since it is ATEX rated already. How about the instruments included in this...

All, I understand the concern on overloads and all that. The vendor had actually sized the motor large enough to not get in to the service factor. I just want to add that our project spec says that at 1.0hp and up the SF shall be 1.15. And what i just wanted to know if the SF of 1.25 is...

Thank you podobing!

Thank you Warros. Dave, no overloads here I believe.

Hi guys, I'd like to know what is the impact of having a 100-hp motor of 1.25 service factor. In our motor data sheet it is 1.15 SF. Is 1.25 SF safe to use and acceptable? Kindly let me know your thoughts. Thanks, V.

Hey guys, Are there any AODD pump models that can comply to a maximum suction pressure of 150psig (this is due the pump is designed to a design to the maximum pressure of the source vessel. Some pump vendor can only limit there max suction pressure to 5 psig. Also, are there any options to...

Hello Dinesh, Compressor is Oil-lubricated screw compressor and is operated by Load/Unload controls(or Auto Dual Control). The vendor actually did assume that the beginning pressure is the same value of the outlet of the compressor discharge and air dryer discharge (dryer in the package), is...

Hello guys, I have a question regarding Vessel sizing (an Air Receiver within Air Compressor Package). The vendor got back to us and said that they need to know three things: 1) Retention time 2) Beginning Pressure 3) Ending pressure at the end of retention time (and also flow at this period)...

Thank you so much guys, I'll get back to you if I get some questions again. Regards, V

Thank you guys for your reply, LitteInch --- I meant the (2). Referring to P&ID this AODD will be installed outdoor ( i don;t know yet if location will change though). It will be installed in OHIO and it will be pumping condensate (mixture of water or hydrocarbon). I don't understand why we...

Hello guys, I have a question, how do vendor winterize a pump? This pump is an AODD pump. Thank you and hope to get some response from you. Regards, Virata

Here is the Pump curve. The alternate (with lower Nss) pump has lower effiency.http://files.engineering.com/getfile.aspx?folder=43d2d561-44e4-4c19-a879-b7a160d8c388&file=Nss.pdf