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Heavy-duty construction is longer lasting and less likely to jam than plastic blast gates. Designed to fit inside the 4'' or the 2-1/2'' clear flexible hose.
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For more simple, convenient, and stable operation, use our Blast Gate Wall Bracket. It attaches to both the wall and
gate, eliminating the sloppy hose movement that occurs when opening an
unanchored blast gate.
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Customer Reviews and Photos for:
4'' Metal Blast Gates
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Average Rating:
3.8
(14 customer reviews)
$12.99
Add your review...
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1) Submitted by
Philip Johnson, from ARCADIA, FL
on 2/6/2011
Customer Rating: 
Didn't purchase the Metal Blast Gate for a dust collector system , I purchased it for a Motorhome to shut of the hot air duck that they put in at the factory to heat the water pipes under neat with no way to shut it off which is a 4" system does a beautiful job.
Rockler is a awesome company to deal with excellent service.
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2) Submitted by
Jack Whelan, from Pipersville, PA
on 2/6/2010
Customer Rating:
They do the trick!!!
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3) Submitted by
Bill Thomas, from Kennewick, WA
on 11/16/2009
Customer Rating:
I replaced 5 plastic gates that tended to break apart easily after a couple year's use. The new gates work very well with the lock knob mounted on the upstream side (i.e., upside down). The mounting flanges could have been a bit longer, but worked as is. Good product.
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4) Submitted by
Tim, from Mountain Home, AR
on 4/18/2009
Customer Rating:
They are quality blast gates but have a small flaw, they sing a little bit when all the gates are closed and the vacuum is on. Other than that they are perfect for my needs.
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5) Submitted by
Larry E. McDowell, from Festus, MS
on 4/23/2008
Customer Rating:
I bought these on sale and got a good price.
Installation went fine and they work as designed.
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6) Submitted by
Andrew Fung, from Winter Garden, FL
on 2/26/2008
Customer Rating:
Well made and can be disassembled for service. Not obvious but this gate works better with the lock screw (clamps the gate in position, not shown in photo) on the upstream side (opposite the suction source). The lock screw can cause the baffle to stand off from the housing and leak. With the correct orientation the suction will hold the baffle tight to the seat.
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7) Submitted by
John Augustus, from Gold Hill, OREGON
on 12/30/2007
Customer Rating:
Good quality for the money . Works well
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8) Submitted by
Mike, from Friendswood, TX
on 11/10/2009
Customer Rating: 
Works as described. Product is made in Taiwan.
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9) Submitted by
Patrick Sexton, from Cambridge, NY
on 1/7/2008
Customer Rating:
Good value, well made except for the amount of air they suck in when closed and screwed shut. Perhaps some kind of seal could be inserted in a groove during assembly. I am sure that would get more excellence than any other category.
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10) Submitted by
Al Camp, from Kennesaw, GA
on 4/18/2011
Customer Rating:
The flanges on these as well as the 2 1/2" blast gates are not long enough to use the 4 inch hose clamps without some real squeezing by you. You almost need three hands but if the flange were a half inch longer, it would be so easy.
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11) Submitted by
Pete, from Nanticoke, PA
on 1/18/2012
Customer Rating: 
With the blast gate installed with the thumb screw facing away from the vacuum, the thumb screw and suction creates a good seal in the closed position. However in the open position, installed either way, there is a very significant gap around unit where the two sections are screwed together. There should be a gasket there! I would return the item, postage would seem to be a waste. I’ll insert some type of gasket with a thicker gate slide, this will create a much tighter seal, and make the item satisfactory to me. This item also has male connections, I would prefer female ends that would fit over the pipe. The unit is made solid, serviceable but in Taiwan. I would not recommend this item unless you intend to correct its leakage, or I might have received a bad one. I am still a very satisfied customer of Rockler.
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12) Submitted by
Daniel Singer, from Lowell, MA
on 1/10/2013
Customer Rating:
I have a bunch of these - and the 2-1/2" ones - and am using them with the plastic bases. They work fine, though the open bottom does indeed represent a significant vacuum leak when the gate is open. Orienting the gate with the screw pushing the gate toward the vacuum-supply side does maintain a decent seal when closed, but when the gate is up, nothing fills the gap at the bottom of the gate. The gates do not sit deeply enough in the plastic bases for the bases to act as a seal. I agree with the others who say the flanges are too short. It was especially challenging to get these installed using hose clamps and bases when the hose was new and cold (not as pliable). I recommend using hose clamps to secure the hose to the flange and a separate zip tie to secure the gate to the base. I haven't tried to close off the bottoms of the gates yet - I only recently realized they were leaking there. A length of duct tape should do the trick, I would imagine. Other than that, they're sure sturdy and the gate seals well when oriented properly.
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13) Submitted by
David, from Spring Green , WI
on 4/3/2012
Customer Rating:
My use was to replace a plastic blast gate on a commercial air dryer at dog grooming operation. The plastic wore out broke and the metal gate was easy to adapt. It should last for many doggy groomings. Thanks
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14) Submitted by
Phil DiLavore, from Terre Haute, IN
on 4/14/2008
Customer Rating:
A big improvement over the plastic blast gates I had been using. The increased suction at any machine is much appreciated.
I think Mr. Fung's suggestion would go a long way toward solving Mr. Sexton's problem.
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Home  Power Tools and Shop Accessories Dust Collection 4'' Dust Collection Hose, Fittings and Accessories 4'' Metal Blast Gates 
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