NH3 vacuum pump

[Josip]

Hi,

Need your opinion/advice which good type of ammonia vacuum pump/recovery unit to buy?

Some links, experiences good/bad.....

Best regards, Josip

[SteveDixey]

Hi,

Need your opinion/advice which good type of ammonia vacuum pump/recovery unit to buy?

Some links, experiences good/bad.....

Best regards, Josip

Vacuum pumps - BOC Edwards. http://www.bocedwards.com/
Oil-Sealed Pumps - RV, EM and EV Series

Can be specified for ammonia with steel internals. Bloody heavy though if you are dragging it up to a condenser on a roof.... Pretty bomb proof providing you protect it from dirt ingress by using a catch tank and an in-line filter. Make sure it doesn't get hit by much in the way of positive pressure on the suction side. Easy to rebuild

I have seen various chemical pumps used for ammonia, but none fitted on a recovery unit as such. One make I have used is Viking doing about 200kg/hr for a single phase 240vac motor
http://www.vikingpump.com/Applications/applications.htm

Units I have come across on refrigerant and other applications again have been bomb proof, easy to service, and can easily be fitted with strainers ( a must have IMHO), etc to protect the pump. Will also deal with any oil and water that come with the liquid.

Steve

[aawood1]

Hi josip, Have a look at a post by dai kin on the 8-3-2007. I posted an reply about the the pumps we use on ammonia systems and they take some stick at times, but change the oil and filters they seem to keep working OK.
Arthur.