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300 Mini Pumps provide accurate metering of all Group Size A, B and C West System epoxy resin and hardeners. They mount directly on resin and hardener containers and eliminate the messes associated with measuring by weight or volume.
Calibrated to deliver the proper working ratio, the West 300 Mini Pump Set includes one resin pump and two hardener pumps. As packaged, the pumps are ready to install on Group Size B containers. A package of extension tubes for the smaller Group Size A containers are included with the set. Group Size C extension tubes are included in the 105C Resin and in the 207-SC or 209-SC packages.
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Made of durable polypropylene
Offer years of dependable service
105/205-206 pumps deliver approx 0.8 fl. oz. of resin/hardener with one full stroke of each pump
105/207-209 pumps deliver approx 0.9 fl. oz. of resin/hardener with one full stroke of each pump
If necessary, you can combine different group sized-as long as all of the pumps have a yellow head. To avoid confusion and possible off-ratio metering, 300 Mini Pumps have yellow heads, which should not be used in with any older pumps with a white head (301 and 303 pumps).
What is the ratio of these pumps? Why couldn't these be used with Totalboat epoxy?
The ratio is 5:1. The pumps won't fit on the TotalBoat bottles. It will be difficult to draw fluid evenly.
I broke one of the heads. Can I purchase just that pump?Thnx, LJ
Not that I know of. I had the same problem I just bought the set.
I have only seen these pumps sold in sets.
Will this set fit on the 1 Gal Resin and 1Qt hardener cans?
Yes, I bought this set for that purpose and it worked perfectly.
Yes, but you should specify or call them. My project was a cedar strip canoe that has been glassed on both sides. I used the 205/207 and I would recommend it. Do not leave the pumps in the cans for extended periods of time as they will clog up as they are hard to get clean. Good quality and a good company. All my dealing with them have been excellent...
JOSEPH M GLEDHILL
Yes. Different length straws included for quart/gallon.
How do you clean the dispenser pumps?
I have left dispencer pumps ( small 205 & 206 resin ) stay in the containers for I don't know ! Got to be at least over a year ; every thing works fine , resin sets up just fine. Been usingwest system for maybe 40 years and never had a failure ( wood boat repair etc. ) So its up toyou, to bad more folks haven't given you a reponse . Try GBI inc they will definitly set youstraight.
they do not need to be cleanedthe pumps work fine with using them irregularlyI keep an extra set on hand , just in case , we move them from can to can as we open a new container
I usually don't clean the pumps because they are in use quite a bit, and there is a lot of material still in the pump body. When I do clean them out, I pump denatured alcohol through the pumps until it runs clear.
The dispenser pumps will clog with hard/gelatious epoxy clumps after a few months of inactivity, thereby completely blocking pumping action. So, unscrew the pump but leave it loosely in the epoxy can, and place the can in a pan of boiling water so the water level comes up 2/3 of the way to the estimated level of the epoxy in the can. Boil for 30 minutes or until the hard clumps have liquified and resorbed into the rest of the epoxy.If you're referring to drips/spills of uncatalyzed epoxy on the tip of the dispenser and on the top of the epoxy can, an alcohol swab will dissolve it.
I never tried to clean the pumps. They work well for a very long time, even with intermittent use. I use a scale to check all my batches, so I don't worry about short shots. When the pumps cease to work, I simply replace them.
You don't. Just leave them in the appropriate can. If anything, cover the can and pumps with some Saran wrap from the kitchen to keep them from picking up shop dust.
I don't they stay in can until the next use. Keep them from being contaminated by other pumps so don't harden at times. Give a littlesquirt to have fresh chemicals on your first measured stroke.Mine have been used this way for a year.Craig
I never have. The epoxy doesn't harden until you mix it together, and I keep the pumps in the cans until I use it's used up. Even in gallon cans.I suppose you could soak it in alcohol, but I've never seen a reason to do that.
JAMES PETERS SNYDER
There shouldn't be any need to clean the dispenser.
What do you do with the pumps between uses to keep them from getting clogged?
Resin does not cure on its own until combined with hardener. So, in regular circumstances the pumps won't clog or rather- the resin won't cure inside the pump. If you were really worried or storing them at some odd temperature you could just remove the pumps when storing but I don't think it's necessary.
once I put them in the can, I leave them there until the container is empty. I have not had a problem with clogging.
Nothing. Just keep the hardener pump on the hardener container and the resin pump on the resin container and do not mix them up.
Nothing, we have not had any problems with the Minipumps plugging between uses.
Nothing, so far. I am using them now for a few weeks and they do not get clogged. However, I do not know how long you can leave them open.
I've just left my pumps in the cans and have had no trouble with them getting them clogged.
I do nothing at all and they have never clogged. I've gone months between uses and never had a problem.
I do not clean out the pump between uses, but probably because I use it a lot. Plan A: If you don't plan to use the pumps for a while, (months?) take them out and drain the resin and hardener. There is a lot in the pumps. then start pumping denatured alcohol, or solvent of your choice, through them until they are clean. Harsh solvents might ruin the pump guts, so be careful. Also, as plan B, you could just throw out the used set and buy a new set when ready to pump again. Plan C: Leave them on the cans for a year, like I did, using them only a couple of times a month, and they worked fine.
No need to do anything. I've never experienced pump clogging in the 15 years I have used them.
For me they never get clogged. If I haven't used the pump in a while, I may have to prime it - waste a little - to get it going. They behave very well and I have never, ever had a problem with a clogged pump.
JAMES PETERS SNYDER
I know exactly what you meen. My pumps, especially the smaller hardener pumps, tend to stick and not pop back up for another accurate discharge after a few months. I have been simply discarding the "sticky" pumps and purchassing new ones when I nolonger trust their accuracy. I too would like to know a good solution to this problem in an otherwise great product..
Hi,That is a problem i haven't had. I've used This system for more than 12 years, sometimes the pumps sit for several months between use, and they work fine when i need them. Sometimes, if the resin or catalyst is cold it is hard to pump. Warming it a little solves the problem. Don't know if this helps you.Jerry
Once screwed on to can I leave them there. Store at room temp.I have never had any clogging. If they have sat a while I do giveA little squirt into a container to make sure they are working ok.Just a little as epoxy not cheap.
Nothing, so far. I am using them now for a few weeks and they do not get clogged.
I have used West System products for quite some time, and the pumps I've used last for a long time without clogging - as much as several months between uses. Occasionally, a pump clogs and I just replace it. I suppose you could clean a pump with solvent, but that's too much hassle for me.I keep my 105/205 in my garage, which stays at about 55-60 deg F year round. Maybe this helps. I also weigh each batch to make sure of the correct ratio. Pumps that have been sitting for some time can pump short.
I've had the resin and 205 hardener for years, and I never had a clogging issue with the pumps, with no particular care taken of them.
Mine don't get clogged, but if yours do, maybe you could tape them compressed. Just a guess, not sure what it would do.
I have been using Weast pumps for years, and I normally don't clean them up even if i know I won't be using them for a while (6 months). Tha'ts because I'm too lazy to take them apart and totaly clean them up.Usually the only thing that happen by leaving them uncleaned is that they may leak air, and in which case I take small pumps unti lthe air has been pumped out. Also, before using a stored pump I wipe down the pump rod with some solvent to remove caked crud.Bill Wareham
I just put a plastic bag over the nozzle of each pump. I'm on my second gallon with no problems yet.
I've been using them for many years, and I've never had them clog. Excess material drains back into the can or, more likely, drips out the spout of the pump, making a mess, but they haven't clogged on me.
I keep all the west system items in a plastic 5 gallon pail. This keeps the pumps clean. My woodshop has alot of air bourne dust. If it gets on the pumps it makes the function of the pump work much harder. Sometimes so much so that I think the pump has lost it prime. Its very important not to lose prime. This keeps the ratio in the correct amount.. If the ratio is not correct doors can fall apart. Please don`t ask how I know this fact.
I would buy this products again
Great pumps, giving the proper mixture for a good use, over and over, even many days in betweenuse. A great time saver without the mess of measuring.
Art from SML
worked great, better than expected!!
Pretty good, but you could do bettah
These are great! Unfortunately they are also an indispensable part of the epoxy system they work with. In the past I have purchased West Systems by the gallon and had the pumps included with no additional maneuvering. Not so at Jamestown and they neglected to suggest the inclusion of the pumps with the original order so I had to pay another ten bucks shipping in order tho use the product. It's the little things that count boys. Like I said Pretty good, But you could do bettah
Jim the Runner
San Jose CA
Clever epoxy pumps.
These pumps are an accurate and clever way to achieve the proper ratio of resin to hardener. They always work, even when left in the resin or hardener for several months without use.
Essential for West System Mixing
These pumps work beautifully to provide just the right mixture of epoxy and hardener for small to medium size jobs. I blend these together in disposable plastic liners normally used for paint.
great for large projects: cleaning seems impossible
These are perfrt for large projects where you are hitting he pmps almost daily. But the pumps clof up with time unused. Tried soaking in acetone and pumping it through,. Not effective.
Will buy as needed
Works really well
The only thing I wish, was it told me that I would need 4 cans of hardener to use 1 gallon of Resin. Had 3/4 of the camper done and had to wait until I ordered more hardener to finish the project.
Rockin chair not a rocking boat
Used to glue up a Maloof rocking chair. I'm an impressed fine wood worker.
I have used these pumps on B sized 105/205 epoxy and they measure perfectly every time, with just a bit of attention to detail - I have received maybe one or two pumps that come loose or strip out after a few uses but these in my eyes were just lemons - I've been using these rigorously for a few years now and they perform well just about every time. no guessing, just pump and mix. I always have extra sets in stock just in case.