Recent content by assco

A closed loop oiler from Trico and removal of the breather would work great. If oil contamination is a concern get rid of the labrynth seals and put magnetic isolators and a bullseye on the pump.

Diaphragm pumps work best in this application given the addition of a very inexpensive addition, a stand pipe. Ensure the suction piping slopes up to the stand pipe and down from the stand pipe to the pump suction. There are electronic stroke length adjusters to receieve you 4-20mA signal and...

To JonBoyz, don't limit yourself to Lewa. Check out Milton Roy and Brann & Lubbe. If you are on the gulf coast call 251-443-9988.

Good points made all around. You have no problem charging with air. You have no problem with temperature. If you are replacing bladders monthly there is something else going on.

If this contaminates your process whats to say another fluid wouldn't do the same? Is there a compatable product? If your product can stand nitrogen have you considered a gas seal?

Gland seals? I assume you are speaking of cartridge vs component seals. Please elaborate on this. Good place to look for information on mechanical seals is any seal mfg. Call your local Flowserve or John Crane facility.

I use Milton Roy pumps exclusively.

What is the NPSHA and NPHSR of your application? Is there any chance of syphoning? Does your metering pump have contour plates on the process side?

Hose pumps suck. Nothing but trouble for me. Use a metering pump as previously stated if flows aren't to high.

Need alot more info.

Dependent on the depth of the well you might try US Pump Co. they make an air actuated pump that lifts 34'.

Increasing motor size will do absolutly nothing,assuming you have a maximum diameter impeller.

Be carefull with your calculations. Dampeners are generally not for use with viscous pumpage such as your sulfuric. I recommend having a mfg size.

Metering pump is the way to go. The only thing I would add is that there will obviously be pulsations. If your process can't handle these pulsations add a dampener.

Use a hydraulically actuated diaphram pump, Milton Roy, Brann & Lubbe etc... A peristaltic pump will be a maintenance headache. There is no degassing valve required, however you must have a positve suction head. Raise your feed tank on a platform, slope your suction line downward to a standpipe...