We have a pump (high temp service 350 deg C)- sp gr 0.8; flow: 160m3/hr' diff head: 35 mts; etc.
This pump had a history of bearing failures. A decision was taken (after due consultations with OEM, i guess) to drill balancing holes in the impeller to reduce loads on the bearing.
After...
WE have an existing sour water pumping application (25 m3/hr; 140 bar differential pressure) using sundyne pump (LMV331) at appx 18000 rpm, dual pressurized tandem seals (pusher balanced design) with chemraz O rings/ C vs SiC faces.
We have have had a series of problems with these pumps since...
Dear All,
Sorry for laziness - I didnt do due diligence on researching this subject. I hope members would be forgiving and kind enough to provide useful tips.
We are going to apply ceramic coating for internals of CS bonnets of our sea water exchangers. I want to know if any special...
Dear All,
We are in concept development stage of a cooling water tower (fresh water). I am of the opinion that a cooling tower with extended basin to incorporate vertical turbine pumps (about 5 nos of 10,000m3/hr ; 35mts head) would be better. Other view in our group is that perhaps Horizontal...
Dear All,
Has anyone used auto-recirculation valves in their pumping systems (see Tyco website: www.tycovalves-na.com/ getlit.asp?lit=ld/YAWMC-0418-US.pdf ). In our plant we use continuous minimum flow for small capacity pumps; for high capcaity pumps, we have a flow control valve to take care...
Dear All,
I just want to know what is the action of a non-slam swing check valve. My understanding is that it is non-slam in one direction (i.e. when the disc slams against the body during opening) and that the non-slam action arises due to the opening of the disc in a direction of compression...
Dear All,
In our plant we have Alumunium Plate fin exchangers and currently we are experiencing leakage. trying hard to locate a specialist supplier (Singapore or around in the region). Can any one guide me how to locate a specialist supplier in this region.
Would also appreciate if some...
Dear All,
In our plant we have Alumunium Plate fin exchangers and currently we are experiencing leakage. trying hard to locate a specialist supplier (Singapore or around in the region). Can any one guide me how to locate a specialist supplier in this region.
Would also appreciate if some...
Hello all,
Just a matter of definition. Can anyone give a strict definition of what a multi-stage compressor is with respect to a centrifugal compression system. There are many loose terms and I was today debating that any compressor having multiple impellers is a multistage compressor, whereas...
Dear All,
We have a fire fighting training ground in our plant. Various fire types are simulated for training sessions , viz LPG fire and Diesel fire, and the fire men demonstrate how to put off the fire.
The good ole blokes from the fire department have requested me to study the diesel fire...
Dear All,
1) Does a copper cable (9 mm od- made of multi core fine drawn wires) riding freely on a rotating equipment shaft (made of Forged Alloy Steel) lead to sparking by friction alone?
2) Is it possible that the above cable (riding freely on the rotating shaft) can cause any grooves or...
Dear All,
1) Does a copper cable (9 mm od- made of multi core fine drawn wires) riding freely on a rotating eequipment shaft (made of Forged Alloy Steel) lead to sparking?
2) Is it possible that the above cable (riding freely on the rotating shaft) can cause any grooves or damage to the...
Dear All,
I am looking for help with a solid cone type water sprayer design. My requirement is as follows:
Medium: Water
Flow: 5 m3/hr
Pressure: 3~4 kg/cm2G
I wish to fabricate a suitable sprayer nozzle for this application. Please help with a suitable picture, dimensions, and principles of...
