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Hi All, Can somebody explain me how to calculate head increase that stated on the API 610 11th paragraph 6.1.4 "Pumps shall be capable of at least a 5% head increase at rated conditions by replacements of the impeller(s) with one(s) of larger diameter or different hydraulic design...

Dear all, i would like to ask your opinion Which mechanical seal plan is better for operation condition below? Pumping liquid : etilene benzene Temperature : 234 deg C SG : 0.664 vapor pressure : 3.37 kg/cm2 API plan 23 / 52 or API plan 23 / 72 + 75 FYI : Our client refuse to use API plan...

Hi JJpellin, Pumpsonly, thank u very much for uR explanation, its really helpful!

All, I want to ask about construction of API 610 OH6 pump (High speed geared pump), Is there any Spacer coupling between Motor and Gearbox? If any spacer, what is the purpose? Motor will take off while maintenance anyway.. unless you have vertical motor stand on your OH6, thank u

Dear BI and LI, thank you verymuch for your response and explanation After check to the Process Engineer, this pump need ARV because its located inside Hull (we are working on a vessel). Therefore, available space is limited. The ARV has been provided at each pump discharge. And also Hot Water...

Dear pumpsonly, thank you very much to remind me, i just realized that this is mechanical seal forum Also, thank you very much for your explanation, really appreciate

Dear Gents, Can anyone tell me what is disadvantage of using ARV especially for large pumps? for example pump with discharge nozzle 18", capacity 1525 m3/hr, head 56.45 m, service is HOT WATER CIRCULATION PUMP. Since my end user refuse to use ARV for big pumps Really appreciate for your...

Dear Gents, Can anyone tell me what is disadvantage of using ARV especially for large pumps? for example pump with discharge nozzle 18", capacity 1525 m3/hr, head 56.45 m, service is HOT WATER CIRCULATION PUMP. Since my end user refuse to use ARV for big pumps Really appreciate for your help...

Hi micalbrch, thank you very much for your answer, really appreciate [smile] for API 675, could you please advise why we refer to ISO 10816-1 instead of ISO 10816-6? thank you very much for your help

Hello pump experts, Does anyone know the vibration acceptance criteria for reciprocating pump API 674 and metering pump API 675? I read API 674 and API 675 but can't find any, really appreaciate for your help..

I'am sorry, question number to should be 2. What is Total Discharge rate? and how to calculate it, if i have 8 pumps with different2 service and operating point? Thank you

Dear all fluid control expert, could you please advise my question below, regarding the hydraulic Drive Pump for FPSO application? this is my first time to handle such kind of pump, so please gime me some advise... 1. is it possible to use cargo pump (with hydraulic power unit) as a process...

Dear all fluid control expert, could you please advise my question below, regarding the hydraulic Drive Pump for FPSO application? this is my first time to handle such kind of pump, so please gime me some advise... 1. is it possible to use cargo pump (with hydraulic power unit) as a process...

thank you very much for your explain John, it's really helpful

Hi All.. I have a question regarding magnetic bearing isolator for pumps, i hope anyone can help me on this, 1. in what application/what condition that pumps suggested to use magnetic bearing isolator? 2. I have read some project specification said that "pumps with steam-quench of the seal...