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 SizeSize1/4″
Work PressurePressureVac. ~ 21MPa
Work TemperatureTemperature-10°C ~ +80°C (Manual), -10°C ~ +40°C (Pneumatic)
Cv ValueValue0.1

(※1) In the case of PCTFE sheet
(※2) In the casef VTF Male connection.

Detected Leak InnerLeak Rate≤ 3 x 10^-10 Pa m³/sec
Detected Leak OuterLeak Rate≤ 1 x 10^-10 Pa m³/sec
WeightWeight270g (Manual), 350g (Automatic)
Internal VolumeVolume1.0cc
Work DurabilityDurabilityOver 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

DVKA Series

Parts NameMaterial
1Body316L SS
2Seatpctfe’*1’
3DiaphragmCo-Ni Alloy
4Diaphragm Retainer630 SS
5Bonnet304 SS
6Handle’*2’Aluminum Alloy
7Cylinder
8Cylinder 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

MarkSize
41/4″

2. Connection

MarkConnection
VMVTF (Male)
VFVTF (Female)
DBI-Lok

3. Operation

MarkOperation
Manual
NCNormal Close
NONormal Open

4. Internal Finishing

MarkInternal Finishing
EPElectro-Polish (≤ Ra 5 µ inch)
BAMachining (≤ Ra 10 µ inch)

Dimensions (Manual)

Dimensions ( Pneumatic )

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