Vacuum Pump
Vacuum Pump
Hi all,
We need to purchase a new vacuum pump, what do you all recommend?
My H.T. wants a good one, she looked in the Labtek catalogue and saw a Diaphragm vacuum pump for $865.
They also have a Rocker 300 vacuum pump for $521.
Does anyone know what the difference is between the two, she has no idea and neither do I!.........
Thanks in advance,
Helen.
We need to purchase a new vacuum pump, what do you all recommend?
My H.T. wants a good one, she looked in the Labtek catalogue and saw a Diaphragm vacuum pump for $865.
They also have a Rocker 300 vacuum pump for $521.
Does anyone know what the difference is between the two, she has no idea and neither do I!.........
Thanks in advance,
Helen.
Regards
remlap12
science support and problem solver
remlap12
science support and problem solver
-
- Posts: 1496
- Joined: 12 Mar 2013, 08:10
- Job Title: Labbie
- School: Wollondilly Anglican College
- Suburb: Tahmoor
- State/Location: NSW
Re: Vacuum Pump
Hi Helen
I'm sure someone here will be able to explain the difference - I can't. But a couple of years ago, I was looking to replace our vacuum pump and was recommended that I buy an oil-free one. I never did actually buy it as I changed schools shortly after.
I'm sure someone here will be able to explain the difference - I can't. But a couple of years ago, I was looking to replace our vacuum pump and was recommended that I buy an oil-free one. I never did actually buy it as I changed schools shortly after.
Re: Vacuum Pump
Hi Merilyn,
Yes, the little bit of research I've done seems to suggest most of them are oil free now.
Which is where I was hoping to head!
I just don't want to waste money on a fancier one if the cheaper ones are sufficient for our needs.
Yes, the little bit of research I've done seems to suggest most of them are oil free now.
Which is where I was hoping to head!
I just don't want to waste money on a fancier one if the cheaper ones are sufficient for our needs.
Regards
remlap12
science support and problem solver
remlap12
science support and problem solver
-
- Posts: 829
- Joined: 15 Dec 2015, 10:49
- Job Title: Lab Technician
- School: FCAC
- State/Location: QLD
Re: Vacuum Pump
Only thing I can see is that diaphragm pumps are more chemical resistant than the rocker which I think is the piston type .
I guess it depends what you will use it on and the likelihood of corrosive vapours etc getting sucked into it . If it was just for bell jars and perhaps sucking some chalk through a glass crucible type setup I'm sure the cheaper one would last a lifetime.....the rate we use them .
However , I'm just a sceptical bastard though so I can't help but think that a piston in a bore with no lubrication ( oil free) is not going to last
I guess it depends what you will use it on and the likelihood of corrosive vapours etc getting sucked into it . If it was just for bell jars and perhaps sucking some chalk through a glass crucible type setup I'm sure the cheaper one would last a lifetime.....the rate we use them .
However , I'm just a sceptical bastard though so I can't help but think that a piston in a bore with no lubrication ( oil free) is not going to last
Re: Vacuum Pump
Ha Ha bigmack,
I hear you!!
The one we had worked fine, it was just a basic little one......but it seems that it grew legs.....
I hear you!!
The one we had worked fine, it was just a basic little one......but it seems that it grew legs.....
Regards
remlap12
science support and problem solver
remlap12
science support and problem solver
- MissKat
- Posts: 86
- Joined: 24 Apr 2015, 11:41
- Job Title: Science Technician
- School: Cranbrook School
- Suburb: Bellevue Hill
- State/Location: NSW
Re: Vacuum Pump
Hi all!
Just had the joys of discovering the oil of our vac pump hasn't been changed in ages. Flushed out the old stuff and replaced it with what we had in the storeroom. The old container didn't have any true labels on it. I was wondering if anyone knows what type of light machine oil I can buy and where?
Just had the joys of discovering the oil of our vac pump hasn't been changed in ages. Flushed out the old stuff and replaced it with what we had in the storeroom. The old container didn't have any true labels on it. I was wondering if anyone knows what type of light machine oil I can buy and where?
- MissKat
- Posts: 86
- Joined: 24 Apr 2015, 11:41
- Job Title: Science Technician
- School: Cranbrook School
- Suburb: Bellevue Hill
- State/Location: NSW
Re: Vacuum Pump
Adding to my previous question.
The vacuum pump has possibly overheated and doesn't turn on anymore. The fresh oil I had just put in has drained out opaque instead of clear. Any thoughts on what could have caused this? Should I add it to the list of repair jobs (external) or try to buy a new one?
The vacuum pump has possibly overheated and doesn't turn on anymore. The fresh oil I had just put in has drained out opaque instead of clear. Any thoughts on what could have caused this? Should I add it to the list of repair jobs (external) or try to buy a new one?
- Anna Z
- Posts: 255
- Joined: 16 Feb 2021, 14:39
- Job Title: Lab Manager
- School: DET Secondary School
- State/Location: VIC
Re: Vacuum Pump
We have the pumps sold by Westlab https://www.westlab.com.au/equipment/eq ... head-gauge they do the job for what students need and easy to maintain
- Anna Z
- Posts: 255
- Joined: 16 Feb 2021, 14:39
- Job Title: Lab Manager
- School: DET Secondary School
- State/Location: VIC
Re: Vacuum Pump
Is it possible that you have sucked some moisture into it ?. Let it dry out for a bit then try to turn it on again. Sometimes we run ours without a vacuum trap between the flask and the pump....often teachers suck liquids into them by accident.MissKat wrote: ↑18 Mar 2021, 13:41 Adding to my previous question.
The vacuum pump has possibly overheated and doesn't turn on anymore. The fresh oil I had just put in has drained out opaque instead of clear. Any thoughts on what could have caused this? Should I add it to the list of repair jobs (external) or try to buy a new one?
- MissKat
- Posts: 86
- Joined: 24 Apr 2015, 11:41
- Job Title: Science Technician
- School: Cranbrook School
- Suburb: Bellevue Hill
- State/Location: NSW
Re: Vacuum Pump
Thank you so much. One of the Science Extension students was using it so it quite possibly be the cause. I'm going to let it dry out over the school holidays.Anna Z wrote: ↑20 Mar 2021, 08:50Is it possible that you have sucked some moisture into it ?. Let it dry out for a bit then try to turn it on again. Sometimes we run ours without a vacuum trap between the flask and the pump....often teachers suck liquids into them by accident.MissKat wrote: ↑18 Mar 2021, 13:41 Adding to my previous question.
The vacuum pump has possibly overheated and doesn't turn on anymore. The fresh oil I had just put in has drained out opaque instead of clear. Any thoughts on what could have caused this? Should I add it to the list of repair jobs (external) or try to buy a new one?
Where can I buy the oil suitable for the vacuum pump?
- bindibadgi
- Posts: 293
- Joined: 13 May 2009, 09:37
- Suburb: Kensington Park
- State/Location: SA
Re: Vacuum Pump
Years ago I bought a Welch pump, & it's a great little piece of equipment. It's both a vacuum pump & compressor, so great for inflating lungs/balloons, & also sucking the air out of flasks of leaf discs etc.
They're harder to find now, but I'd highly recommend getting one. Fisher Scientific & Thomas Scientific have them, & maybe also eBay.
They're harder to find now, but I'd highly recommend getting one. Fisher Scientific & Thomas Scientific have them, & maybe also eBay.
You do not have the required permissions to view the files attached to this post.
bindibadgi
Re: Vacuum Pump
I asked our supplier which oil to use a few years ago and he sent me this. (The vacuum pump looks the same as MissKat's).
You do not have the required permissions to view the files attached to this post.