Aluminium Blastgates
Aluminium Blastgates
£11.81 - £59.44 (£9.84 - £49.53 Ex. VAT)

Aluminium Blastgates

  • Aluminium blastgates with locking screw
  • Stronger than plastic
  • Available in a variety of sizes
£11.81 - £59.44 (£9.84 - £49.53 Ex. VAT)

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In Detail

Aluminium blastgates, stronger than plastic and with a locking screw.

Reviews (8)

Customer Reviews

Overall rating 4.4 out of 5 based on 8 reviews

Newest Customer Reviews



12 December 2016

The best!

I love these. Threw out those horrible plastic ones.

Jeff K

5 January 2016

OK but wouldn't fit ...

The height of these just wasn't enough to enter & locate in my existing system ( based on standard soil pipe fittings with each of the blastgates sandwiched between two 110mm WC pan connectors ) . The actual item itself wasn't well finished and had some sharp edges to the two halves of the casting both internally & externally . The movable gate also seemed to be a bit sloppy but does have the option of the locking screw . All in all I'll be sticking with the cheap & nasty plastic ones ...

frank owen

20 February 2015

excellent and very good value

I had a setup based on the axminster plastic gates that I found to be flimsy and not air tight. These aluminium ones are a very solid, quality product that seems to be air tight so far at least. I suggest to fit the thing so that the 100mm pipe is vertical and avoid the blocking plate dropping downwards with gravity... if not locked with the screw, which I usually do not bother with (i.e. I leave it loose). My setup now uses just two pipes that go to one 100mm pipe via a Y bend. I have 3 metres of very flexible 100mm diameter antistatic pipe connected that I manually connect to three machines as needed because I tend to use one machine for several hours and then move to the other machines. I have taken care to use metal duct in the pipe layout under the machines and these are earthed to avoid a fire if ordinary plastic drain pipes are used. The system works well.

I researched blast gates here in France and a similar product exists here in bent stainless but it is not as good and costs £30 each. I also looked at 125mm gates with an electric control and pneumatic actuator and these cost about £400. I looked at DIY approaches on Youtube etc and these looked to me as flimsy, not robust and would take hours to these aluminium ones fit the bill very well.

I agree with other reviewers that you need to use tape or a heavy duty glue / mastic to prevent leaks. My local pro shop says that dust extraction is the most complex thing in woodworking as like me most people have a small size extractor (900m/hr) due to cost, physical space and noise constraints associated with a bigger machine. The trick seems to be to have as short a duct run to the machine and completely air tight blast gates which these give you.

I highly recommend


21 April 2014

Just what I needed, just when I needed them!

Just bought (amongst some other bits and pieces) a couple of alloy blast gates for my 4" dust extractor system. I had the plastic ones before, but they seemed to clog easily and required constant digging out of the grooves with a bent paper clip - if I didn't do that, the blast gates wouldn't close properly and I lost suction. The alloy ones open and shut smoothly and there's even a threaded bolt which holds them in place and avoids the gates sliding in or out of their own accord. The only downside seems to be the rather short fitting flanges - mind you, that was soon sorted out with the addition of a length of duct tape. All in all great improvement over the plastic ones!

JoãO Martins

10 June 2013


Agree on closing the gap with tape, but they exist for a reason wich is no clogging, so once and a while you´ll have to take the tape of and unclogg.
Regardless that wich isn´t really a problem with a powerfull dust extractor, they are great!!
Recently created a dust extraction system with 9 meter of tube, 10 100mm of these blast gates connected to an 950m3 dust collector, and works perfect!
Dont forget to mount them in the right position.

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