304 vs 316 Stainless for Closed loop systems
- Thread starter Lono
- Start date
SouthernOregonM
Member
According to the specs on this smaller unit, the CM2000 incorporates 1/2HP oil-free compressor. I have received no response form them as of now.
Their model numbers usually include EP for the explosion proof motor casing from what I have seen, so if history repeats itself, it would be the (hypothetical) CMEP2000 we would be interested in. Both oil free, and explosion proof... Just being oil-free, well I can get a promax 6000 for 500 bucks if you know what I mean.
So maybe I should clarify. There is a small oil free unit, that is not explosion proof. The explosion proof, oil-free unit, that is rated for r6000 is the CMEP6000, which as I recall costs around $6500 USD, in which case see my point about the haskel and compressor. In my opinion there is no reason to buy a Chines oil free pump if it is not explosion proof as there are several other readily available models for cheaper: ie: RG6000
So maybe I should clarify. There is a small oil free unit, that is not explosion proof. The explosion proof, oil-free unit, that is rated for r6000 is the CMEP6000, which as I recall costs around $6500 USD, in which case see my point about the haskel and compressor. In my opinion there is no reason to buy a Chines oil free pump if it is not explosion proof as there are several other readily available models for cheaper: ie: RG6000
I will let GW chime in, but the eco green ones are using hemp seed oil for the lubricant. Until I see the test results he was talking about for residuals, I will keep on keeping on.
"Product Description
Explosion-Proof recovery pump designed specifically for hydrocarbon (HC) refrigerants such as R290, R600 and R600a. This unit is so quiet that you will barely even hear it running! The vapor recovery rate is very fast at ±37.0 lbs/h. It is equipped with a 1/2 horsepower hermetically sealed oil compressor, pre-charged from the factory with nontoxic hempseed oil lubricant, and a built-in 2 stage oil separator. High pressure (550 psig) and low pressure (-11.5″ HG) shut-off protection circuits are built in to this machine but can be overridden at the users discretion by the push of a button. The inlet and outlet ports are both 1/4″ SAE male flare.
Power: 115v/60HZ
Weight: 45.9 lbs.
Dimensions: 18.9″(L) x 8.7″in(W) x 14.6in(H)"
$1,250
- See more at: http://ecogreenindustries.net/produ...ecogreenindustries.net/product/recovery-pump/
We are currently testing this pump on hemp seed oil and so far it works, is faster than an Appion, and quiet.
Yet to be determined, is if the hemp seed oil will stand up to the test without breaking down, if the equipment will stand up lubricated with hemp seed oil, and what contaminants it might add to the butane.
It is not oil less, and we have filters to clean up the pump discharge, but the current ones don't last long, can only be regenerated a limited number of times, and are expensive, so we are also looking at alternatives there.
Is the Gast > secondary tank > promax still the next best thing to having haskel pneumatic as far as speed and safety are concerned? Have gast on order but 6week lead time will keep it out of my hands another couple of weeks. Haskel obviously is best but I can't power or conceal the compressor in my residential setting.
Patiently awaiting sub $3k purpose built pump, but until then....
Patiently awaiting sub $3k purpose built pump, but until then....
Like most of the pump currently being used for this purpose, the Gast works well, but isn't rated for the purpose.
