My 50 gallon black plastic loft 50 gallon cold water tank has become serious
distorted, over a period of, possibly, 20 years. The 'stress bars' holding
the two long side together were displaced, so that the tank bulges at the
top, making it difficult to seal the top (there was no 'top' that I ever
knew about. I has been opined that it would be impossible to draw the
distortion back. Now, I wonder about this since 50 gallons of water flowing
out of a tank in the loft, could cause serious damage. Does anybody have
any ideas as to how to bring it back into shape, or otherwise?

Thanks in advance,

GOG

On Jul 7, 3:06*pm, "GOG" wrote:
My 50 gallon black plastic loft 50 gallon cold water tank has become serious
distorted, over a period of, possibly, 20 years. * The 'stress bars' holding
the two long side together were displaced, so that the tank bulges at the
top, making it difficult to seal the top (there was no 'top' that I ever
knew about. *I has been opined that it would be impossible to draw the
distortion back. *Now, I wonder about this since 50 gallons of water flowing
out of a tank in the loft, could cause serious damage. *Does anybody have
any ideas as to how to bring it back into shape, or otherwise?

Thanks in advance,

GOG

empty it, then add a frame round it. Theyre not meant to be sealed.

On Jul 7, 6:09*pm, NT wrote:
On Jul 7, 3:06*pm, "GOG" wrote:

My 50 gallon black plastic loft 50 gallon cold water tank has become serious
distorted, over a period of, possibly, 20 years. * The 'stress bars' holding
the two long side together were displaced, so that the tank bulges at the
top, making it difficult to seal the top (there was no 'top' that I ever
knew about. *I has been opined that it would be impossible to draw the
distortion back. *Now, I wonder about this since 50 gallons of water flowing
out of a tank in the loft, could cause serious damage. *Does anybody have
any ideas as to how to bring it back into shape, or otherwise?

Thanks in advance,

GOG

empty it, then add a frame round it. Theyre not meant to be sealed.

It's knackered. Replace it, £125 for a tank from Screwfix, £90ish plus
delivery from BES.
You will not be able to restore the tank to its original shape.
They should have a snap-tight lid, a screened overflow and a
filtered air inlet.

If it fails, the 50 gallons will take down all the ceilings. The
float valve will be running and the damage will be enormous if there
is no-one in at the time. A no-brainer, IMHO.

On Jul 7, 8:39*pm, Onetap wrote:
On Jul 7, 6:09*pm, NT wrote:



On Jul 7, 3:06*pm, "GOG" wrote:

My 50 gallon black plastic loft 50 gallon cold water tank has become serious
distorted, over a period of, possibly, 20 years. * The 'stress bars' holding
the two long side together were displaced, so that the tank bulges at the
top, making it difficult to seal the top (there was no 'top' that I ever
knew about. *I has been opined that it would be impossible to draw the
distortion back. *Now, I wonder about this since 50 gallons of water flowing
out of a tank in the loft, could cause serious damage. *Does anybody have
any ideas as to how to bring it back into shape, or otherwise?

Thanks in advance,

GOG

empty it, then add a frame round it. Theyre not meant to be sealed.

It's knackered. Replace it, £125 for a tank from Screwfix, £90ish plus
delivery from BES.
You will not be able to restore the tank to its original shape.
* They should have a snap-tight lid, a screened overflow and a
filtered air inlet.

* If it fails, the 50 gallons will take down all the ceilings. The
float valve will be running and the damage will be enormous if there
is no-one in at the time. A no-brainer, IMHO.

/If/ its knackered, I agree. I got rather the impression it was still
sound though, just a support come adrift.


NT

OK, Perhaps I didn't really mean 'sealed', I guess. Covered so that dirt
doesn't fall into it. A lid, I guess. Possibly something to conform to
regulation ???30? Oh, and it is not coffin type, more a bathtub.
Originally it was surrounded by 'black plastic bin bag with insulation
inside - but that has long since disintegrated.

GOG

"NT" wrote in message
...
On Jul 7, 3:06 pm, "GOG" wrote:
My 50 gallon black plastic loft 50 gallon cold water tank has become
serious
distorted, over a period of, possibly, 20 years. The 'stress bars' holding
the two long side together were displaced, so that the tank bulges at the
top, making it difficult to seal the top (there was no 'top' that I ever
knew about. I has been opined that it would be impossible to draw the
distortion back. Now, I wonder about this since 50 gallons of water
flowing
out of a tank in the loft, could cause serious damage. Does anybody have
any ideas as to how to bring it back into shape, or otherwise?

Thanks in advance,

GOG

empty it, then add a frame round it. They're not meant to be sealed.

On 08/07/2011 13:26, GOG wrote:
OK, Perhaps I didn't really mean 'sealed', I guess. Covered so that dirt
doesn't fall into it. A lid, I guess. Possibly something to conform to
regulation ???30?

Although you can still buy the bits as a Byelaw 30 kit, Byelaw 30 was
replaced by Paragraph 16 of Schedule 2 to the Water Supply (Water
Fittings) Regulations 1999:

16.—(1) Every pipe supplying water connected to a storage cistern shall
be fitted with an effective adjustable valve capable of shutting off the
inflow of water at a suitable level below the overflowing level of the
cistern.

(2) Every inlet to a storage cistern, combined feed and expansion
cistern, WC flushing cistern or urinal flushing cistern shall be fitted
with a servicing value on the inlet pipe adjacent to the cistern.

(3) Every storage cistern, except one supplying water to the primary
circuit of a heating system, shall be fitted with a servicing valve on
the outlet pipe.

(4) Every storage cistern shall be fitted with–
(a)an overflow pipe, with a suitable means of warning of an impending
overflow, which excludes insects;.
(b)a cover positioned so as to exclude light and insects; and.
(c)thermal insulation to minimize freezing or undue warming..

(5) Every storage cistern shall be so installed as to minimize the risk
of contamination of stored water. The cistern shall be of an appropriate
size, and the pipe connections to the cistern shall be so positioned, as
to allow free circulation and to prevent areas of stagnant water from
developing.

Colin Bignell