Product
Key Advantages
- Tiediaphragm design —guarantees full opening
- Cv 2.8 for highlow applications
- Metaloetal seal —no elastomers in the flow path
- No internal threads or springs —fully swept flow path
- Manual or pneumatic actuation
- GP / HP / UHP three process grades
Construction Material
| Parts | Material |
|---|---|
| Handle | Aluminum alloy |
| Bonnet nut | 304 SS / A479 |
| Stem | 316 SS / ASTM A479 |
| Bonnet | C63000 |
| Seat | PCTFE (standard) or Vespel PI |
| Diaphragm | 316L / A240 |
| Body | 316L SS / ASTM A479, or 316L VAR / SEMI F20, or 316L VIMAR / SEMI F20 |
Technical Specifications
Bore diameter
10.2 mm (0.4 in.)
Port size
1/2", 3/4", 1"
Flow coefficient (Cv)
2.8
Working pressure
Vacuum to 17.2 bar (250 psig)
Pneumatic actuator pressure
5.5— bar (80—00 psig)
Working temp. (PCTFE seat)
-0 °C to 70 °C (-0 F to 160 F)
Working temp. (PI seat)
-3 °C to 121 °C (-0 F to 250 F)
Internal leak rate (He)
≥5×10 std cm/s
External leak rate (He)
≥5×10 std cm/s
Seat leak rate (He)
≥1×10 std cm/s
Process Specifications
| Requirement | GP | HP | UHP |
|---|---|---|---|
| Material / Spec | 316L / A479 | 316L / SEMI F20 316L VAR / SEMI F20 | 316L / SEMI F20 316L VAR / SEMI F20 316L VIMAR / SEMI F20 |
| Surface roughness | Ra 15 in (0.4 μm) | Ra 10 in (0.25 μm) | Ra 5 in (0.13 μm) |
| Polishing | Mechanical | Electropolished | Electropolished |
| Packaging | Single bag | Double bag | Double bag |
| Cleanroom class | ISO 6 / Class 1000 | ISO 4 / Class 10 |
Configure & Order
1 - Body Material
2 - Valve Series
3 - Flow Path
4 - Inlet Port
5 - Outlet Port
6 - Actuator
7 - Seat Material
8 - Process Grade
Part Number
DV-11 / 316L / DV3 —Lowressure Highlow / 2A —Straight / FMR8 —1/2" female faceeal / Same as inlet / (omit) —Manual / (omit) —PCTFE / GP
Overview
DV3 series lowressure highlow diaphragm valve. Tiediaphragm structure ensures the valve opens fully even at low differential pressures. Metaloetal seal and large 10.2 mm bore provide Cv 2.8 for bulk gas or highlow purge applications. Available in manual and pneumatic versions.
Dimensional Drawings
Drawing Pending
Manual Dimensions
| Order No. | Port Type | L (mm) | A (mm) |
|---|---|---|---|
| ?DV32A-SMR8- | 1/2" Swivel Male | 67.0 (2.64) | 35.3 (1.39) |
| ?DV32A-FMR8- | 1/2" Female Faceeal | 67.0 (2.64) | 35.3 (1.39) |
| ?DV32A-SMR12- | 3/4" Swivel Male | 81.3 (3.20) | 49.5 (1.95) |
| ?DV32A-FMR12- | 3/4" Female Faceeal | 81.3 (3.20) | 49.5 (1.95) |
| ?DV32A-SMR16- | 1" Swivel Male | 90.0 (3.54) | 58.2 (2.29) |
| ?DV32A-FMR16- | 1" Female Faceeal | 90.0 (3.54) | 58.2 (2.29) |
Dimensions are for reference only and subject to change without notice.
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