| http://www.w3.org/ns/prov#value | - It is to be noted that the coils and the ferromagnetic path(s) are located radially external of the valve annular inner housing wall 27a so that no magnetic or corrosion sensitive materials, other than the permanent magnet 14 and soft iron pole pieces 17 and 18 within encapsulation housing 16, are exposed to the gases or other working fluid being through-putted and controlled in the valve.
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