Hey guys, I was hoping to get some direction on a unique gas compression application. I need a compressor (small at first for research pilot plant) to compress a mixture of gases about 50 PSI with an inlet pressure of either 100 PSIG or 250 PSIG. The final design will be a constant inlet...
I need to apologize up front but I cannot get the search function to work on this site. I just get a blank screen.
I am looking for suitable materials for pumping triflic acid. I cannot find this acid in any chemical compatibility charts. Specifically, I want to know if EPDM is an acceptable...
I am not certain if this is the appropriate forum to ask this question so I apologize in advance to the moderators if that is the case....
If you were teaching a six hour basic centrifugal pump/hydrualics course to a group of consulting mechanical engineers and plant engineers, what would you...
Does anyone have experience pumping long hair with a centrifugal pump? I suspect a macerator or grinder pump is needed but I am still skeptical that this will work. Seems to me that anything which happens to be rotating will fail.
Flow is 7000 GPD with 30' of discharge head.
I need to pump a 3.5% sulfuric acid / 20% wood pulp slurry. Flow needs to be variable from 1 GPM to 800 GPM and will be injected into a reactor at 400 PSI. Temperature of the slurry is 140 degrees F.
We are currently using a Seepex progressive cavity pump for 1 GPM injection but we need to...
We recently installed a 460V 250kW VSD air compressor (6 Pulse). The machine ran fine for a year. Lately the machine has been tripping the breaker. We also have had problems with other breakers within the same substation tripping. After ruling out mechanical issues we connected a power quality...
A client of mine is seeking a testing laboratory to confirm his air compressor's compliance with ISO's Class "0" oil free air standard. I have searched the US for such a facility and have come up short.
Can anyone recommend a company in the USA that can provide this service?
Hello everyone.
I have been stumped again, twice now in one month. We have Qty (9) National Oilwell 200 HP Plunger Pumps Model 200T-5M, installed on an extrusion application. Flow is 90 GPM @ 2900 PSI (80% Water/20% Oil mixture, clean and no abrasives). The accumulator pressure (suction side)...
Hello everyone,
I have been stumped by a series of mechanical seal failures on a gear pump.
Fluid:
Printing Ink
200 Degrees F Max
200 cps max
No solids present
Pump:
Gorman Rupp Internal Gear
Model GHA3NM3-B
Driven at 205 RPM with 5 HP Gearmotor
30 GPM @ 100 PSI
Mechanical Seal:
Single...
Does anyone out there have experience pumping black printing ink with gear pumps (30 GPM @ 100 PSI)? I know it can be very abrasive. I am looking for suggestions on rotor material, bushing material and sealing options.
I recently supplied a 250 HP pump to a quarry and included the pump manufacturer's 250HP VSD drive to control it.
At startup I learned that the electrical supply (lines, transformer, 0.5 s time delay fuses) were rated for 200 HP. I can control the max amp draw using the PLC on the VSD to...
I have a problem with contactors welding together on an air compressor starter. It always happens on hot days so I suspect low voltage is the problem. Any ideas on an improvement that could be made to avoid this type of failure? Or am I venturing down the wrong path?
