Untitled - COMEVAL

Unival® BUTTERFLY VALVES
Mateial Selection Guidance
Data Sheets Manual
The below chart is intended to provide the end user and valve selection staff with a useful guide to material compatibility.
No contractual responsibility is accepted by our company as result of wrong use of this list of compounds and materials.
It has to be born in mind that the process may change behavior depending on other parameters such as pressure,
temperature, concentration, fl uid velocity…etc. The Valve materials are wide in their specification, i.e: Iron foundry refers
to Cast Iron A126 or other grades, Ductile Iron and other Iron alloys. Carbon Steel applies to A216 WCB however other
cast steel alloys such as LCB, WCC have to be interpolated between this cast steel and the superior Stainless Steel. Other
materials and elastomeric compounds not covered in this table can be advised by our technical team.
SELECTION CODE:
A= EXCELLENT
B= IT MAY BE USED
C= USE WITH CAUTION
D= NO,DO NOT USE
IRON
FOUNDRY
ALUMINIUM
356
MATERIALS
CARBON
STEEL
STAINLESS
STEEL
303
STAINLESS
STEEL
316
SEAT ELASTOMER
BUNA N EPDM / EPR VITON TEFLÓN
SODIUM ALUMINATE C C C B B A B A A
SODIUM BICARBONATE C B C B B A A A A
SODIUM BISULFATE (10%) D D D A A A B A A
SODIUM BISULFITE (10%) D D D A A A B A A
SODIUM BORATE C B C B B A B A A
SODIUM BROMIDE (10%) D B C B B A B A A
SODIUM CARBONATE A D A A A A B A A
SODIUM CHORATE C B C A A A B A A
SODIUM CHLORIDE C B C B B A B A A
SODIUM CHOROMATE B D B A A A B A A
SODIUM CYANIDE A D A A A A B A A
SODIUM FLUORIDE D C D B B A B A A
SODIUM HYDROXIDE (COLD) 20% A D A A A A B B A
SODIUM HYDROXIDE (HOT) 20% B D B A A B B C A
SODIUM HYDROXIDE (COLD) 50% A D A A A A B C A
SODIUM HYDROXIDE (HOT) 50% B D B A A B X C A
SODIUM HYDROXIDE (COLD) 70% A D A A A B C A
SODIUM HYDROXIDE (HOT) 70% B D B A A B C A
SODIUM HYPOCHIORIDE D D D D D X A
SODIUM METAPHOSPHATE B A B A A A B A
SODIUM METASSILICATE (COLD) C B C A A X A
SODIUM METASSILICATE (HOT) D B D A A X A
SODIUM NITRADE B A B B B C B A A
SODIUM PERBORATE B B B B B C A A A
SODIUM PEROXIDE C C C B B C A A A
SODIUM PHOSPHATE (DIBASIC) B D B A A A A A A
SODIUM PHOSPHATE (TRIBASIC) B D B A A B A A A
SODIUM SILICATE A B A A A A B A A
SODIUM SILICATE (HOT) B C B B B B A
SODIUM SULFATE B A B A A A A A A
SODIUM SULFIDE B C B B B A B A A
SODIUM SULFIDE (HOT) C D C B B B A
SODIUM THIOSULFATE B B B A A A A A A
SOYBEAN OIL C B C A A A B A A
STANNIE CHORIDE D D D D D A A A
STARCH A A A A A A C A A
STEAM (212ºF) A A A A A C B B A
STEARIC ACID C A C A A A B A A
STODDARD SOLVENT B A B B B A A A
STYRENE B A A A A D D A
SUGAR LIQUIDS A B A A A A B A A
SULFATE BLACK LIQUOR C B C B B C B A A
SULFATE GREEN LIQUOR C B C B B C X A A
SULFATE WHITE LIQUOR C B C B B C X A A
SULPHUR C A C B B D B A
SULPHUR DIOXIDE B A B A A C A A A
SULPHUR TRIOXIDE B A B A A C X A
SULFURIC ACID (0-7%) D B D C B B X A A
SULFURIC ACID (20%) D D D D D C X A A
SULFURIC ACID (50%) D D D D D C X A A
SULFURIC ACID (100%) B D B A A D C B A
Data subject to change without prior notice
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