Posted by Manny Silva on June 14, 2001 at 08:54:14:
In Reply to: Re: Sodium Sulfite injection,Great tip posted by Tarzan on June 14, 2001 at 06:43:17:
: : In all my years of operation of boilers I have come up with a great way to insure your injection of sulfite in D.A doe's not become plugged.First the reason they plug up is the tank manufacturer and the chemical co want you to put the injection in to the side of tank.(problem here is there is no flow in the tank at the injection point)Solution is to install a tee in your feed water recirculating line that should be recirculating back to the D.A.In the tee install your injector,the flow running past the end of injector will keep the end clean,and it will never plug again.
: Yep, but my Neptune injection pumps are rated for 700# and discharge into SCH 80 piping all the way to the DA tank...They don't plug up...I could use them to hydro the boiler...
Your neptune pump is no different than a milton roy.Once you get to 700# your pump is just going to lift the internal relief,and the chemical is not going to go no where.You must have not have had this happen yet,but in time you will.The next time you have sufite trouble,you will thank me.Never heard of anybody using a chemical feed pump to hydro a boiler.
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