Search results for query: *

Please advise - to size a pipe ( thickness) should I use the shut off head of the pump considering rated impeller or Maximum impeller . Please let me know if you know a standard or a guideline which specifies it. Thanks a lot in advance !

Hi all, How much extra ( approx) and OH3 model costs when compared to OH 4 Pump for the same capacity I know I have not provided any data , I am just asking this info approximately please

Hi , I am unable to understand the following concept: It is said mach number less than 0.3 indicates the fluid is in compressible. So is it that Mach Number Equal to 1 means fluid is highly compressible? It is also said during choking of gas in compressor the fluid will reach mach number...

Hi, I want to know about Mag Drive pumps - I am told solid contents are not desirable in services, is there a limit ( average and approx) - what are the limitations of Mag Drive pumps - Any Reliability figures available - What is the critical most failure component within Mag Drive pumps...

Hi, One of the spec says once pressure vessels are installed on foundation ( Anchor bolts are concrete bound) , nuts have to be torqued to a pre determined value. Specification gives tensioning values based on Anchor bolts dia and Material. Do we have any value in tensioning concrete bound...

Hi could any tell, how to quickly approximate surge pressure due to valve closing or pump stoppage? Also I want to know if the surge pressure be more than pump dead head pressure due transients repetitions? Thanks a lot !

One of the tank collapsed during construction due to severe winds. Contractor , disassembled all the damaged courses ( courses were out of shape, had deformed ) , re - formed it using mechanical presses and re constructed. I want to know, if it is ok to use permanently deformed plates to re...

I understand to facilitate easy pulling of tube bundles rail and wheels are provided to the bundle WITHN EXCHANGER assembly . Can any one show me a picture or drawing please . Thank you

Hi , please advice me a good practical course (online also ok) for hvac ( both hydronic system as well as air conditioning please. I am not a hvac person , I want to learn please Regards 😃

Could anyone please advice me a HVAC software - which covers both residential and commercial building HVAC design and Equipment selection? - It should also have capability of ducting layout design without auto cad . - Then should also give bill of material? ! Thanks in advance!!

While data sheet for centrifugal pump is prepared suction pressure and npsh available are provided . I understand npsh available takes into consideration of atmospheric pressure, ( if applicable) minus the vapor pressure and minus the friction losses . In that case , please let me know is it not...

Hi, I have a pump which is beneath a tank. It's actual motor is .63 hp, 1200 rpm Maintenance wants to couple it with 1.5 hp motor with 1800 rpm I want to know what is effect when a pump is coupled to higher rpm and higher hp motor than vendor designed values Will it increase velocity at...

had posted my doubt many months ago, but it is still not resolved ! Please help! We have number of API 611 steam turbines, which are basically drivers for many pumps, blowers etc They have mechanical Governors ( woodward TG, which is supposed to be factory set ) but also has trisen’s...

Hello , Could any one explain me the term " Register fit", especially in the context of Mechanical seals.

Hi Experts, API 676 para 7.4.16 does not allow shims beneath the pumps ( for Positive displacement) and similarly API 610 6.3.4 for centrifugal. * May I know if API 686 also does not allow shimming beneath pumps? * Other than pipe strain is there a reason why shims are not allowed? * I...

Hello Forum, I am told, when pumps are operated in Parallel, performance curves must match as closely as possible, while in series curves dont have to match! This is something I need to understand. is there a reason for this statement. Any explanation please. Thanks a lot!

Could anyone please let me know if there is a specific advantage of BB4 model of API 610 over BB3 or even BB5. Other than they are "tie Rod" pumps or " "ring pumps" are there any specific application for this Model. Thanks a lot !

Could anyone please define what is Stuffing Box pressure and if it is the pressure related to service fluid being pumped or seal fluid. ( also if it is seal fluid pressure, then for plan 54 , how to know the stuffing box pressure? ) Also Second question is how to calculate pressure...

Hi, May I understand why Electronic Speed control is provided for Steam Turbines in addition to Hydraulic Governor? Are they not (Hydraulic or Mechanical governors) meant for throttling steam inlet as per set speed? If the function of Electronic Governor is to covert RPM to frequency and...

I have been asked to examine if keeping the lube oil pump running when the main pump itself is on off condition help prevent the corrossion on bearings Similarily, to keep seal quench running even when pump is on off condition. Could anyone help to examine this and what are the factors I...