In-line strainer to protect FPHE?

[julianf]

Ive been using various exchangers (coil / baxi cast iron lump / radiators) for a while now to pre-heat my veg, but they are very slow.

For example, the average indirect coil is only about 0.3 m/sq in area, so, although the water is hot, the transfer to the veg is slow.


I have a large fphe, but i dont want to wreck it with BCBs.  Im wondering about fitting one of these in-line with it -



I read they have a removable mesh filter.

Wondering if anyone is familiar with them?

[Tony]

Yes K.H gifted me one a while back.  They have a little steel mesh liner that is indeed removable and cleanable.

[julianf]

Would you say my plan is reasonable then?

JIM on VOD has given me the fear about them blocking, and, as i want to operate one on my processor, i need it meth / temperature proof, which rules out a normal filter.

[therecklessengineer]

Would you say my plan is reasonable then?

JIM on VOD has given me the fear about them blocking, and, as i want to operate one on my processor, i need it meth / temperature proof, which rules out a normal filter.

They're entirely metal construction, so temperature and methanol proof.

What's the issue with it blocking? You can always fit a PRV and a dump back into the reactor if you need to maintain flow.

[julianf]

The issue is that, if it gets full of BCBs, and back flushing does not work, its "new FPHE" time : (

[therecklessengineer]

Ah, you mean the FPHE blocking, not the filter.

Yes, I see what you mean.

Anyone ever tried to take one apart? Are they welded construction or pressed? Seal material?