central heating corrosion guard - is this a used unit (pics)

[dave]

I just had a salamander corrosion guard for use in a central heating system delivered. It seems to be a used unit to me.

I queried it and was told they "are all like that".

Is that correct? The deposits in both ends of the thing look much more in daylight that in these pics - but the flaky plating is quite bad - not that that affects the functioning of course. I can see green discolouration and even some white on the threads which seems like limescale. Appreciate some expert yes/no on this. tia

Here are some links to pics of the unit:-

[alan_m]

My browser would display the pictures until I entered the other links on the page into the browser address bar

[harryagain]

Looks second hand to me.

[dave]

(Well known) Supplier said, verbatim, "I can confirm that they are all like you have described, the green / white deposit is just from the mixture of metals.

Had another look - there is definitely verdigris in the nut threads and the unit is made of chrome plated brass. Also the business part of the internal nut threads have only a little plating left on them - can see the brass - as "wear" as if have been tightened up.

Think I'll ask for a replacement.

[Dave Liquorice]

Queried with whom? The supplier or manufacturer?

Does the device need wet testing? Any spannering marks on the corners of the plated nut? Probably wouldn't show on the olive nut.

[alan_m]

Mark the one you send back - they will just send you back the original as proof that they are all like that.

[dave]

The supplier. (emailed sales@ as was the only email I found)

Ah - don't know the answer to that.

Not as such - but there is failure of the plating (some "bubbling" on most all the edges of the nut surfaces adjacent to the weld to the body).

Right - there are no marks on either olive nut and they have a different finish to the rest of the thing.

I don't want to look a complete dork by accusing them of sending a used one - but it really does look as if it has been.

[Dave Liquorice]

I was wondering about the blueing on the body. Plating and welding are not good bed fellows. If it had been properly installed I'd expect marks or "bruising" on at least a couple of the nuts corners.

I think your best course is to call the manufacturers or find an email address and maybe send the pictures with the query.

[ARW]

UV pen?