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Use of all the construction materials industrially available from cast iron // cast steel to the various grades of stainless steel up to AISI 316 L in relation to the corrosiveness of the liquids metered. |
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Possibility of using different construction materials between outer housing and measuring unit (inner housing plus rotors and timing gears). Typical example: PD meters with carbon steel outer housing and stainless steel measuring unit. |
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For the measurement of diluted hydrocloric acid and diluted sulphuric acid a version completly manufactured in plastic (moplen) with shafts and screws in hastelloy B is available. |
From the relevant tables select the construction material more suitable for the specific needs either for what concerns the outer housing either for what concern the measuring unit.
OUTER HOUSING MATERIALS |
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CODE |
BODY / COVERS |
GASKETS |
A |
CAST IRON |
PETROFLEX |
B |
BRONZE |
PETROFLEX |
C |
CAST STEEL |
PETROFLEX |
D |
DUCTILE IRON |
PETROFLEX |
E |
AISI 304 |
TEFLON |
F |
AISI 316 |
TEFLON |
G |
AISI 316L |
TEFLON |
Transmission of movement is normally of magnetic type for all the codes |
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MEASURING UNIT MATERIALS |
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CODE |
HOUSING |
ROTORS |
1 |
BRONZE |
BRONZE |
2 |
BRONZE |
ALLUM. ALLOY |
3 |
CAST STEEL |
ALLUM. ALLOY |
5 |
CAST STEEL |
CAST IRON |
7 |
AISI 304 |
AISI 304 |
8 |
AISI 316 |
AISI 316 |
9 |
AISI 316L |
AISI 316L |
| Bearings are normally made of carbon for all the codes. | ||