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| Element Vessel |
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| A varied line-up of pressure-resistant vessels for membrane elements. |
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Outline |
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| Spiral type membrane modules consist of elements and vessels (pressure-resistant containers) used by inserting one to six elements depending on applications. Nitto Denko provides various types of vessels for different applications. |
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Features |
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[For general desalination]
Mid-high pressure and low pressure vessels are available. The end plate fixing method consists a “stud bolt” method for 8 inch application, “VICTAULIC joint” (medium to high pressure) and “snap ring” (low pressure) methods for 4 inch applications.
[For seawater desalination]
Pressure-resistance of 6.9MPa with the stud bolt method with white UV coating.
[For ultra-pure water]
A low elution type FRP vessel with higher inner flatness and smoothness.
[For electrodeposition coating]
Vertically setting type vessel made of SUS304. |
| Product No. |
S2 Vessel |
4FRP42V
-1～6 |
4FRP70B
-1～6 |
(U-turn vessel) |
Correspondence
element |
S2 element |
S4 Element |
End plate
fixation
method |
Snap ring |
VICTAULIC
(R) Joint
*2 |
Stud
Bolts |
High
pressure
clamp |
| Evaluation conditions |
Max. operating pressure
[MPa] |
6.9 |
3.4 |
6.9 |
4.4 |
Max. operating temperature
[°C] |
45 |
90 |
| Measurement
conditions |
External cylinder |
FRP+SUS |
FRP |
SUS |
| End plate |
SUS |
FRP+PVC |
SUS |
| Features |
－ |
Dead
space-less/
SUS316
Make Inside/Outside buffing |
| Usage |
Concentration of saccharide |
－ |
Ο |
◎ |
Ο |
| Concentration of beverages (fruit juice, tea coffee, etc.) |
Ο |
◎ |
Ο |
| Decolorization of seasoning |
(－) |
(－) |
(－) |
| Separation, desalination, concentration of various liquid
(dairy products, amino acid, saccharide, etc.)
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(－) |
(－) |
Ο |
| Manufacturing sterile water for food and pharmaceuticals/medicines. |
(－) |
◎ |
(－) |
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| Product No. |
8FRP25UP-
1～6 |
8FRP42B-
1～6 |
8FRP70B-
1～6 |
8FRP5RS-
1～3 |
| Corresponding element |
S8 element |
| End plate fixation
method |
Stud bolts |
Retaining ring |
Exposure
limits |
Max. operating
pressure [MPa] |
2.5 |
4.1 |
6.9 |
0.5 |
Max. operating
temperature [°C] |
45 |
40 |
| Evaluation conditions |
External cylinder |
FRP |
FW |
| End plate |
FRP+PVC |
| Features |
Low dissolving type with smooth inner surface. White UV coating |
Mid-pressure
type |
High-pressure
type |
For RS50-S8 (UF for turbid substance removal) |
| Usage |
Concentration of
saccharide |
Ο |
(－) |
Concentration of beverages
(fruit juice, tea, coffee, etc.) |
Ο |
(－) |
| Decolorization of seasoning |
(－) |
◎ |
(－) |
| Separation, desalination, concentration of various liquid
(dairy products, amino acid, saccharide, etc.)
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Ο |
Ο |
(－) |
| Manufacturing sterile water for food and pharmaceuticals/medicines. |
(－) |
(－) |
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