Circular drain key
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Hi
I have just found a large (approx 2½ x 3½ feet) manhole cover under the tiling in my utility room which is an extension built in the late 70s. In each corner there is a circular recess with three indents for a key. I cannot find a key anywhere on the internet, can you please advise? I’m told that this is a double skinned concrete screed and that under it will be a metal tray. The house was built in the early 70s.
Thanks
I have just found a large (approx 2½ x 3½ feet) manhole cover under the tiling in my utility room which is an extension built in the late 70s. In each corner there is a circular recess with three indents for a key. I cannot find a key anywhere on the internet, can you please advise? I’m told that this is a double skinned concrete screed and that under it will be a metal tray. The house was built in the early 70s.
Thanks
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Paul - can you post a picture please of the manhole cover?
RW Gale Ltd - Civils & Surfacing Contractors based in Somerset
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You and me both Paul. I have to get my wife, or my young grandaughter to post photos for me. Are the studs with the three holes a brass colour? You will find they are just just dust caps, they should prise off, or screw off. If you tap them around lightly with a screwdriver, or some tool, they should come off. Then there should be an hole for lifting keys below them. The lid will be heavy and may slide off one way, or t'other. Good luck.paul_mc wrote:Wow, it says i have to get them onto the web first. Im even thicker at internet stuff!!! Can i not email the pics to someone or link to them? Or does anyone know how to get pics onto the web? Dont i need a website for that?
sean
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Here's Pauls cover. Some odd circular keys to release the sealed cover. I don't see any other way than tapping them round (if they'll move) with a punch or chisel. Failing that, drill the heads off them and remove the cover. I reckon it'll be bloody tight, too!
(Paul the closeups of the key slots were very blurred)
(Paul the closeups of the key slots were very blurred)
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I think LLL is correct, looks like a bolt down cover with the heads or screw holes filled with mortar or bituman.
Once the screws (if there are any) are out we would normally use a small hook key, you can however get these covers up by carefully using a bolster or a couple of screw drivers between the cover and frame.
Before you put the cover back down put some grease in the frame to get an air-tight seal, this will prevent any internal venting and make lifting the cover easier next time.
Once the screws (if there are any) are out we would normally use a small hook key, you can however get these covers up by carefully using a bolster or a couple of screw drivers between the cover and frame.
Before you put the cover back down put some grease in the frame to get an air-tight seal, this will prevent any internal venting and make lifting the cover easier next time.
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Sods law certainly did rear its ugly head. First three bolts came out fairly easy but the last one was a sod. I had to go to B&Q and buy the biggers baddest pointed chisel with huge head and hammer like hell to get it moving. All of them are out now, but i think i need to chip around the edges to get some movement. I bought some cover keys too as now the bolts are out theres recesses for the ordinary flat drain cover keys. As a point of interest. the bolts are made of bronze!!!