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Vacuum Pump Information Needed

Mr. D on Thu December 27, 2007 12:49 PM User is offline

I did a search on Vacuum Pumps and got some very good info but can't seem to find all the answers I'm looking for.

I have found the following pumps and prices:

Mastercool 1.5 CFM Dual Stage 50 Micron: $210.63

Mastercool 5.0 CFM Duel Stage 25 Micron: $229.58

Robinair Vacmaster 1.5 CFM Duel Stage 50 Micron: $195.99

Robinair Cool Tech 6.0 CFM Duel Stage 20 Micron: $251.99

Prices are within $15-20 on both brands and CFM range so my questions are:


1. The Robinair 6.0 (15600) has a ISO valve (isolation), what are the benefits of this?

2. What is the differance between a Vacmaster or Cool Tech in the Robinair brand?

3. From what I have read the 1.5 CFM dual stage 50 micron pump will do the hobbyist just fine for pulling vacuum on automotive systems. True or False?

Thanks for any info.

Chick on Thu December 27, 2007 1:47 PM User is offlineView users profile

I don't use Robinair, so I can't help you with that, but the 5.0 economyt vacuum pump listed here is a great pumop, and I use it myself.. I can recommend it, it's dual stage, and for the DIY'er it's more than enough..Hope this helps.

PS: The 1.5 is also fine for the DIY'er, but I would always go with the dual stage...Just my opinion...

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Chick
Email: Chick

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Dougflas on Thu December 27, 2007 10:22 PM User is offline

The iso valve is basically a shut off valve that separates the pump from the system being serviced.

marvin-miller on Thu January 03, 2008 3:35 AM User is offline

I have one with an Iso Valve - it leaks so I'm not sure how much value it is. Maybe it's just mine?

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Best & Thanks;
Marvin

NickD on Thu January 03, 2008 8:14 AM User is offline

I have a can tap with a valve that I paid about a buck for back in 65, was given some R-12 in cans by a friend and had some left over in the can, just closed that 30 cent valve and it still hasn't leaked. Maybe they should use a 30 cent valve rather than a nickel one.

TRB on Thu January 03, 2008 9:53 AM User is offlineView users profile

Just a quick mention. Mastercool's 2008 promo sheet has a 3 CFM single stage pump for very close in cost as the 1.5 CFM pump. I'll try and get the information loaded in the main website in the next couple of days.

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marvin-miller on Thu January 03, 2008 12:18 PM User is offline

Quote
Originally posted by: NickD
I have a can tap with a valve that I paid about a buck for back in 65, was given some R-12 in cans by a friend and had some left over in the can, just closed that 30 cent valve and it still hasn't leaked. Maybe they should use a 30 cent valve rather than a nickel one.

It's funny how a person can get locked into thinking. I also have an excellent little valve I put on the pump - and I've never thought of it until seeing your post! It's a high quality shut-off valve and I bet it wouldn't leak a micron....



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Best & Thanks;
Marvin

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