Emerson Y695A Datový list Strana 4

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Bulletin 74.2:Y695A
4
Table 5. Materials Compatibility
CORROSION INFORMATION
Fluid
Material
Fluid
Material
Carbon Steel
Cast or
Ductile Iron
S30200 or S30400
Stainless Steel
CF8M or S31600
Stainless Steel
S41600
Stainless Steel
Monel
®
(1)
Hastelloy
®
C
(2)
Carbon Steel
Cast or
Ductile Iron
S30200 or S30400
Stainless Steel
CF8M or S31600
Stainless Steel
S41600
Stainless Steel
Monel
®(1)
Hastelloy
®
C
(2)
Acetic Acid (Air Free)
Acetic Acid Vapors
Acetone
Acetylene
Alcohols
C
C
A
A
A
C
C
A
A
A
B
A
A
A
A
B
A
A
A
A
C
C
A
A
A
B
A
A
A
A
A
A
A
A
A
Hydrochloric Acid (Air free)
Hydrogen
Hydrogen Peroxide
  Hydrogen Sulde (Liquid)
Magnesium Hydroxide
C
A
I.L.
C
A
C
A
A
C
A
C
A
A
A
A
C
A
A
A
A
C
A
B
C
A
C
A
A
C
A
B
A
B
A
A
Aluminum Sulfate
Ammonia
Ammonium Chloride
Ammonium Nitrate
Ammonium Sulfate
C
A
C
A
C
C
A
C
C
C
A
A
B
A
B
A
A
B
A
A
C
A
C
C
C
B
A
B
C
A
A
A
A
A
A
Methanol
  Methyl Ethyl Ketone
Natural Gas
Nitric Acid
  Petroleum Oils (Rened)
A
A
A
C
A
A
A
A
C
A
A
A
A
A
A
A
A
A
B
A
A
A
A
C
A
A
A
A
C
A
A
A
A
B
A
  Ammonium Sulte
Beer
Benzene (Benzol)
Benzoic Acid
Boric Acid
C
B
A
C
C
C
B
A
C
C
A
A
A
A
A
A
A
A
A
A
B
B
A
A
B
C
A
A
A
A
A
A
A
A
A
Phosphoric Acid (Air Free)
Phosphoric Acid Vapors
Potassium Chloride
Potassium Hydroxide
Propane
C
C
B
B
A
C
C
B
B
A
A
B
A
A
A
A
A
A
B
A
C
C
C
B
A
B
C
B
A
A
A
I.L.
A
A
A
Butane
Calcium Chloride (Alkaline)
Carbon Dioxide (Dry)
Carbon Dioxide (Wet)
  Carbon Disulde
A
B
A
C
A
A
B
A
C
A
A
C
A
A
A
A
B
A
A
A
A
C
A
A
B
A
A
A
A
B
A
A
A
A
A
Silver Nitrate
Sodium Acetate
Sodium Carbonate
Sodium Chloride
Sodium Chromate
C
A
A
C
A
C
A
A
C
A
A
B
A
B
A
A
A
A
B
A
B
A
B
B
A
C
A
A
A
A
A
A
A
A
A
Carbon Tetrachloride
Carbonic Acid
Chlorine Gas (Dry)
Chlorine Gas (Wet)
Chlorine (Liquid)
B
C
A
C
C
B
C
A
C
C
B
B
B
C
C
B
B
B
C
C
C
A
C
C
C
A
A
A
C
C
A
A
A
B
A
Sodium Hydroxide
Stearic Acid
Sulfur
Sulfur Dioxide (Dry)
Sulfur Trioxide (Dry)
A
A
A
A
A
A
C
A
A
A
A
A
A
A
A
A
A
A
A
A
B
B
A
B
B
A
B
A
A
A
A
A
A
A
A
Chromic Acid
Citric Acid
Coke Oven Gas
Copper Sulfate
  Ether
C
I.L.
A
C
B
C
C
A
C
B
C
B
A
B
A
B
A
A
B
A
C
B
A
A
A
A
B
B
C
A
A
A
A
A
A
Sulfuric Acid (Aerated)
Sulfuric Acid (Air Free)
Sulfurous Acid
Trichloroethylene
Water (Boiler Feed)
C
C
C
B
B
C
C
C
B
C
C
C
B
B
A
C
C
B
A
A
C
C
C
B
B
C
B
C
A
A
A
A
A
A
A
  Ethyl Chloride
  Ethylene
  Ethylene Glycol
Formaldehyde
Formic Acid
C
A
A
B
I.L.
C
A
A
B
C
A
A
A
A
B
A
A
A
A
B
B
A
A
A
C
A
A
A
A
A
A
A
I.L.
A
A
Water (Distilled)
Water (Sea)
Zinc Chloride
Zinc Sulfate
A
B
C
C
A
B
C
C
A
B
C
A
A
B
C
A
B
C
C
B
A
A
C
A
A
A
A
A
Freon (Wet)
Freon (Dry)
  Gasoline (Rened)
Glucose
Hydrochloric Acid (Aerated)
B
B
A
A
C
B
B
A
A
C
B
A
A
A
C
A
A
A
A
C
I.L.
I.L.
A
A
C
A
A
A
A
C
A
A
A
A
B
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1. Monel is a trademark of International Nickel Co.
2. Hastelloy is a trademark of Stelite Div., Cabot Corp.
A+--Best possible selection
A--Recommended
B--Minor to moderate effect. Proceed with caution.
C--Unsatisfactory
I.L.--Information lacking
- continued -
Principle of Operation
Y695A Series vapor recovery regulators are used to
maintain a constant blanket (inlet) pressure or vessel
pressure with the outlet owing to a system whose 
pressure is lower than the inlet (see Figure 2).
When vessel pressure increases above the setpoint
of the regulator due to pumping in or thermal heating,
the force of the control spring is overcome by pressure
acting on the diaphragm. This moves the disk away
from the orice, allowing gas to ow from the vessel 
to the vapor recovery system. As vessel pressure is
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