BODY MATERIALS:As the body is internally fully rubber lined, the
body material is protected from corrosion by the medium. |
Type of material | Material standard | Example for application |
Ductile iron | GGG40, DIN 1693 | General application |
60-40-18,ASTM A536 |
400-18, BS 2789 |
Ductile iron(Heat treated) | GGG40.3 DIN 1693 | Heavy applications, Cold applications, petrochemical industries,
power stations, alternative for cast steel |
Cast stainless steel | CF8, ASTM A351 | Medicine, food, drink |
CF8M, ASTM A351 |
Bronze | C-CuSn10Zn, DIN 1705(RG10) | Marine service |
C90500, ASTM B584 |
LG1, BS 1400 |
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DISC MATERIALS:As the disc is in direct contact with medium, the
material should be carefully selected |
Type of material | Material standard | Example for application |
Ductile iron nickel plated | GGG40, DIN 1693 | Air, non corrosive hot or cold water |
60-40-18,ASTM A536 |
400-18, BS 2789 |
Ductile iron nylon coated | GGG40, DIN 1693 | Potable water, water(max. 70°C, PH value between 4.5 and 9) |
60-40-18,ASTM A536 |
400-18, BS 2789 |
400-18, BS 2789 |
Ductile iron, PTFE coated | GGG40, DIN 1693 | Acids, alkalis, oil, water, air |
60-40-18,ASTM A536 |
400-18, BS 2789 |
Cast stainless steel | CF8M, ASTM A351 | Potable water, demineralized water, solvents, industrial water, not
recommended for sea water, gas |
Duplex stainless steel | 1.4462, EN 10088 | Potable water, cooling water, sea water, demineralized water,
solvents, foodstuff |
A181, Grade F51 |
Aluminum bronze | G-CuAl10Ni, DIN 1714 | Sea water, potable water, gas |
C99500, ASTM B148 |
AB2, BS 1400 |
Hastelloy-C | A494, CW-12MW | Phosphoric, hypochloric, acetic, formic, sulfurous |
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SHAFT MATERIALS:Materials for shafts are selected on the basic of
disc materials |
Type of material | Material standard | in combination with disc materials |
Stainless steel | SS410 | Stainless steel, ductile iron |
High strength stainless steel | 1Cr17Ni2 | Stainless steel, ductile iron |
ASTM A431 |
Stainless steel | SS316 | Stainless steel, ductile iron, aluminum bronze |
Aluminum bronze | CuA10Ni5Fe4, DIN 17665 | Aluminum bronze |
C63000, ASTM B150 |
Monel | NA18, BS 3076 | Aluminum bronze(high pressure application) |
Hastelloy C276 | ASTM B574, N10276 | Hastelloy-C |
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SEAT MATERIALS:It is essential for each individual case that the
selection of the type of rubber complies with medium
characteristics |
Type of material | Material standard | Temp.range | Example for application |
Nitrile rubber | NBR | 0°C~90°C | Aliphatic hydrocarbons(fuels, low aromatic containing oils,
gasses), sea water, compressed air, powders, granular, vacuum, gas
supply |
Ethylene-propylene rubber | EPDM | -20°C~110°C | Water in general (hot-, cold-, sea-, ozone-, swimming-,
industrial-, etc). Weak acids, weak salt solutions, alcohols,
ketones, sour gasses, sugar juice |
Special ethylene-propylene rubber | Special EPDM | -10°C~70°C | Potable water, foodstuffs, unchlorined drinking water |
Special ethylene-propylene rubber | Special EPDM | -30°C~120°C | HVAC, chilled water, food stuffs & sugar juice |
Viton | Viton | 0°C~200°C | Many aliphatic, aromatic and halogen hydrocarbons, hot gasses, hot
water, steam, inorganic acid, alkali |
Special viton | Special viton | 0°C~130°C | Concentrated acids |
PTFE | PTFE | 10°C~155°C | Fit for acids, alkalis, oil, not fit for low temperature |
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NOTE:For use in fluids containing ammonia,all valve parts made from
non copper containing materials. |
