IHARA SCIENCE CORPORATION
IHARA DVKA Series Diaphragm Valve For High Pressure Service
Product Made In Japan
Manufacturer: IHARA SCIENCE CORPORATION
Model: DVKA Series
DVKA Metal Diaphragm Seal Valve（21MPa
Features
DVKA Series Diaphragm Valves are designed compact to be applied for UHP high-pressure services.
Diaphragm made of Co-Ni alloy is mounted to realize highly airtight and high durability.
Oil or Grease-free treatment through precise cleaning on the internal media contact surface.
Assembly and Packaging in the clean room.
An indicator to find Open/Close easily is installed on the handle of the manual valve.
Please let us know when you need High-pressure gas products.
| Nominal Size | Size | 1/4″ |
|---|---|---|
| Work Pressure | Pressure | Vac. ~ 21MPa |
| Work Temperature | Temperature | -10°C ~ +80°C (Manual), -10°C ~ +40°C (Pneumatic) |
| Cv Value | Value | 0.1 |
(※1) In the case of PCTFE sheet
(※2) In the casef VTF Male connection.
| Detected Leak Inner | Leak Rate | ≤ 3 x 10^-10 Pa m³/sec |
|---|---|---|
| Detected Leak Outer | Leak Rate | ≤ 1 x 10^-10 Pa m³/sec |
| Weight | Weight | 270g (Manual), 350g (Automatic) |
| Internal Volume | Volume | 1.0cc |
| Work Durability | Durability | Over 50,000 (Manual), Over 400,000 (Automatic) |
(※3) In the case of VTF Male connection under valve Open.
(※4) In-house Test：21MPa N2 gas sealed
Materials of Main Parts
| Parts Name | Material | |
| 1 | Body | 316L SS |
| 2 | Seat | pctfe’*1’ |
| 3 | Diaphragm | Co-Ni Alloy |
| 4 | Diaphragm Retainer | 630 SS |
| 5 | Bonnet | 304 SS |
| 6 | Handle’*2’ | Aluminum Alloy |
| 7 | Cylinder | |
| 8 | Cylinder Cover |
(※1)PI, PEEK, PFA, etc. are available on option.
(※2)Contact us for Lock Out Tag Out (LOTO) options.
Nomenclature of Part Number
DVKA – ① ② – ③ – ④
Ex） DVKA – 4VM – NC – EP [1/4″VTF Male connectin, Automatic, Normal Close, Electrolytic polishing]
1. Size
| Mark | Size |
|---|---|
| 4 | 1/4″ |
2. Connection
| Mark | Connection |
|---|---|
| VM | VTF (Male) |
| VF | VTF (Female) |
| D | BI-Lok |
3. Operation
| Mark | Operation |
|---|---|
| Manual | |
| NC | Normal Close |
| NO | Normal Open |
4. Internal Finishing
| Mark | Internal Finishing |
|---|---|
| EP | Electro-Polish (≤ Ra 5 µ inch) |
| BA | Machining (≤ Ra 10 µ inch) |
Dimensions (Manual)
Dimensions （ Pneumatic )
