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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Italian made
Just a note for the procurement department. I have a 'Zilmet' Italian
made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? -- Roger Hayter |
#2
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Italian made
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#3
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Italian made
Archibald Tarquin Blenkinsopp Wrote
in message: On Fri, 8 Feb 2019 13:00:55 +0000, (Roger Hayter) wrote: Just a note for the procurement department. I have a 'Zilmet' Italian made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? Check the pH of the water. High or low pH produces rust? Is the tank being fed from a local authourity supply or are you pumping from a well? If you want to keep using the tank bung some phosphoric acid into it. Your local waterworks should be doing it anyway if they are feeding any older properties. to do what? -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#4
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Italian made
On Fri, 8 Feb 2019 14:56:14 +0000 (GMT+00:00), "Jim K.."
wrote: Archibald Tarquin Blenkinsopp Wrote in message: On Fri, 8 Feb 2019 13:00:55 +0000, (Roger Hayter) wrote: Just a note for the procurement department. I have a 'Zilmet' Italian made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? Check the pH of the water. High or low pH produces rust? Oxygen produces rust, low pH strips away the initial film enabling the O2 to act with vigour. Is the tank being fed from a local authourity supply or are you pumping from a well? If you want to keep using the tank bung some phosphoric acid into it. Your local waterworks should be doing it anyway if they are feeding any older properties. to do what? The initial film of phosphate coats the surface, it is more difficult to remove, so further oxidation is prevented. Many Morris Marina owners would dispute this, but a none Leyland driver would be fully aware of the benefits. AB |
#5
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Italian made
Archibald Tarquin Blenkinsopp Wrote
in message: On Fri, 8 Feb 2019 14:56:14 +0000 (GMT+00:00), "Jim K.." wrote: Archibald Tarquin Blenkinsopp Wrote in message: On Fri, 8 Feb 2019 13:00:55 +0000, (Roger Hayter) wrote: Just a note for the procurement department. I have a 'Zilmet' Italian made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? Check the pH of the water. High or low pH produces rust? Oxygen produces rust, low pH strips away the initial film enabling the O2 to act with vigour. Initial film of? Is the tank being fed from a local authourity supply or are you pumping from a well? If you want to keep using the tank bung some phosphoric acid into it. Your local waterworks should be doing it anyway if they are feeding any older properties. to do what? The initial film of phosphate coats the surface, it is more difficult to remove, so further oxidation is prevented. Many Morris Marina owners would dispute this, but a none Leyland driver would be fully aware of the benefits. Meds still not quite right then? -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#6
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Italian made
"Jim K.." wrote in message ... Archibald Tarquin Blenkinsopp Wrote in message: On Fri, 8 Feb 2019 14:56:14 +0000 (GMT+00:00), "Jim K.." wrote: Archibald Tarquin Blenkinsopp Wrote in message: On Fri, 8 Feb 2019 13:00:55 +0000, (Roger Hayter) wrote: Just a note for the procurement department. I have a 'Zilmet' Italian made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? Check the pH of the water. High or low pH produces rust? Oxygen produces rust, low pH strips away the initial film enabling the O2 to act with vigour. Initial film of? Rust Is the tank being fed from a local authourity supply or are you pumping from a well? If you want to keep using the tank bung some phosphoric acid into it. Your local waterworks should be doing it anyway if they are feeding any older properties. to do what? The initial film of phosphate coats the surface, it is more difficult to remove, so further oxidation is prevented. Many Morris Marina owners would dispute this, but a none Leyland driver would be fully aware of the benefits. Meds still not quite right then? -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#7
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Italian made
On Friday, 8 February 2019 13:00:58 UTC, Roger Hayter wrote:
Just a note for the procurement department. I have a 'Zilmet' Italian made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? -- Roger Hayter Probably unsuitable for it's application. Ie one intended for CH system rather than hot water system |
#8
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Italian made
On Fri, 8 Feb 2019 10:39:39 -0800 (PST), harry
wrote: On Friday, 8 February 2019 13:00:58 UTC, Roger Hayter wrote: Just a note for the procurement department. I have a 'Zilmet' Italian made *potable water* 25 litre expansion tank that has been in use for four years, and is full of rust, including fair-sized rust flakes. Our water is from the mains and somewhat soft but nothing out of the ordinary. So I know what not to buy. Anyone any recommendations? -- Roger Hayter Probably unsuitable for it's application. Ie one intended for CH system rather than hot water system CH water isn't potable. The replacement depends on the pump. Generally a centrifugal pump has no need of one, just stick a relief valve back to the suction. AB |
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