Dubuisson Filtration

http://dubuisson-filtration.fr/

Compatibilité chimique (AIRPEL)

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Les Informations Saisies sur la Table suivante constituent un Guide général de Compatibilité chimique des Filtres AIRPEL avec divers Fluides. La Temperature, la Pression, La Concentration, ou ia nature des contaminants induit une extrême vigilance quand au choix des différents Filtres AIRPEL. DUBUISSON FILTRATION Vous aidera, en fonction de la précision des éléments fournis, à selectionner les meilleures matériaux pour une durabilité accrue de votre filtre Airpel. Cependant il incombe à l'utilisateur finale de s'assurer de la compatibilité effective de nos préconisations dans le cadre de l' application et/ou du Process. De la même manière cela implique les précautions prisent pour la protection des Opérateurs, les autres équipements ainsi que l'environnement. Lorsqu'aucun type d'élastomère n'est mentionné, il apparait que l'étanchéité préconisé est le nitrile dans tous les cas excepté pour l'acier inox où le Viton est monté de série. Dans le cas ou une étancheité spécifique serait requise, merci de le préciser.
Body Material
Nom Chimique
Symbole Chimique
CI

WB
CS

SS
GM
HAZARD
Remarques
A







Acetaldehyde
CH3CHO


+
+

1
EP 'O' rings. Special cocks required in OW filters at higher concs. CI OV could be considered
Acetic Acid
CH3COOH



+

2
PFA encapsulated 'O' rings (or EP for conc's < 25% & < 50°C). Special cocks in Dual filters. Also see Vinegar.
Acetic Anhydride
(CH3CO)2O



+

1(50)
EP 'O' rings.
Acetone
CH3COCH3
+
+
+
+
+
1
EP 'O' rings. Some pitting on steel might be experienced at elevated temperatures.
Acrylic resin






2
See methyl methacrylate
Acrylonitrile
H2C:CHCN
+

+
+

1
PTFE encapsulated 'O' rings. Pitting of the body material may be experienced at elevated temperatures.
Air

+

+
+
+
G2
Not Dual filters. Scf with caution.
Alcohols

+
+
+
+
+
(1)
Viton & EP 'O' seals may be attacked - see specific alcohol type for more information. See Note 1 & 2.
Alkylates



+
+

(1)
Viton 'O' rings
Alums






 2
See aluminium sulphate.
Aluminium Sulphate
Al2(SO4)3



+

 2
OV filters only.
Amines

+

+
+

 2
EP 'O' rings. OV filters only. Detail composition should be sought.
Ammonia, Anhydrous
NH3
+

+
+

 G1
EP 'O' rings. Do not use OW filters. (Liquifiable gas)
Ammonium Bicarbonate
NH4HCO3


+
+

 2
Viton or EP seals. See notes 1 & 2.
Ammonium Chloride
NH4Cl



+

 2
Nothing suitable over 10% concentration or at high temperature. OV or Y-Type only. Nitrile or EP seals.
Metal mesh (& to a lesser extent perf) elements will be attacked. Monel baskets preferred
Ammonium Diphosphate
(NH4)2HPO4



+

 2
Could consider CI for OV or Y-Type only. Nitrile or EP seals. Special cocks in dual filters.
Ammonium Hydroxide
NH4OH
+

+
+

 2
EP 'O' rings. CI & CS for OV filters only. Use special cocks in SS filters especially for high concentrations
Ammonium Monophosphate
NH4H2PO4



+

 2
Could consider CI for OV or Y-Type only. Nitrile or EP seals. Special cocks in dual filters.
Ammonium NitrateNH4NO3



+

 (1)
Special cocks required in OW filters. Nitrile or EP seals. CI or Viton could be used at low concentrations.
Ammonia solution
See Ammonium hydroxide
Ammonium Sulphate
(NH4)2SO4



+

 2
Do not use Dual filters or Viton 'O' seals. CI or CS could be used at low concentrations & temperatures.
All materials will suffer corrosive attack at high concentrations or temperatures.
Ammonium Sulphite
(NH4)2SO3



+

 2
Do not use Dual filters or Viton 'O' seals. Could use CI or CS at low concentrations.
Amyl Acetate
CH3COOC5H11



+

 1
EP 'O' rings.
Amyl Alcohol
C5H11OH



+
+
 (1)
CS &CI (including WB) could be considered but some attack maybe experienced. EP 'O' seals.
Amyl Chloride (Mixed)
[C5H11Cl]



+

 1
CS or CI can be considered. Pitting may occur on SS if amyl chloride is 'raw'. Cautious use of dual filters.
AnilineC6H5NH2



+

 1
PFA encapsulated 'O' rings (or EP if some deterioration can be accepted)
Animal Fats

+

+
+

 2
SS usually preferred. Heating jackets usually required. GM (& WB) could be used.
Anti freeze
"Anti freeze" is a non-specific term! Car and many 'common' anti freezes are usually ethylene glycol.
Aqua fortis
See Nitric acid
Aqua regia






 1
No standard Airpel filters are suitable.
Arsenic Acid
H3AsO4



+

 1
See Notes 1 & 2. Special cocks in dual filters.
Asphalt

+
+
+
+
+
 2
Viton 'O' seals. Heating jacket probably required.
Aviation Gasoline

+
+
+
+
+
1
Spark ignition aircraft engines - also see 'Jet fuel' for turbine engines. SS or CS usually preferred.
MTBE 'anti-knock' additive may attack 'O' seals - use special grade Viton or PFA encapsulated if necessary.

+ = Suitable filter type. Always check remarks column

CI = Cast Iron; WB = Water body (Cast iron body with bronze internals); CS = Cast steel; SS = Stainless steel (316); GM = Gun metal (bronze)

GENERAL NOTES

  1. Do not used cast iron or cast steel dual filters on water based solutions (Cock seizure will occur as a result of corrosion)
  2. Some corrosion will occur if cast iron or steel filters are used on water based solutions. This corrosion may weaken the filter over time and corrosion products may contaminate the filtrate.
  3. Cast iron filters should be used with extreme caution below 0°C & above 100°C.
  4. Do not use steel filters below -20°C unless special low temperature steel has been specified.
  5. Water body (WB) dual filters should not be used above 150°C (or below 0°C).
  6. The temperature limitations for 'O' seals are :
      • Nitrile (NBR) -30°C to +120°
      • Viton (fluorocarbon): -20°C to +200°C {Viton is a DuPont trade mark} EP
      • (EPDM): -50°C to +150°
      • PFA encapsulated Viton: -20°C to +200°C
      • PFA encapsulated silicon: -55°C to +260°C
    Notes:
    1) PFA encapsulated seals should only be specified if absolutely necessary!
    2) Some chemicals may further restrict the operating temperature range of the seal material - check with a seal manufacturer if in doubt.
  7. A 'use special cocks' comment implies the use of hardened stainless steel cocks (or GM cocks, if appropriate) in stainless steel OW filters in place of Ni/PTFE coated cocks.
  8. Mixtures of chemicals may react more aggressively than the individual constituents.
  9. If there is any doubt about filter material selection, the user should consider conducting compatibility trials before installing the filter.
  10. The computer based version of this chart contains data on each chemical accessible by 'hovering' the cursor over the chemical name.
  11. The "Hazard" column indicates the hazard category in accordance with the European Pressure Directive 97/23/EC. The categories are:- Category 1 = Hazardous;
Sub-category (1) = Hazardous depending on composition or concentration - discuss with Airpel: Sub-category 1(xx) = Hazardous (flammable) above the temperature xx°C (flashpiont);
Category 2 = Non-hazardous. The prefix 'G' indicates that the chemical is gaseous at normal room temperature and pressure (even though it may be being filtered as a liquid).