IHARA SCIENCE CORPORATION
IHARA VB* Series Needle Stop Valves Out Side Screw Type
Product Made In Japan
Manufacturer: IHARA SCIENCE CORPORATION
Model: VB* Series
Features
316 STAINLESS STEEL BODY STANDARD
PRESSURE TO 24.5 MPa
WIDE TEMPERATURE RANGE －196～230℃
CHOICE OF STEM DESIGNS（FOR VB VALVE SERIES）
STRAIGHT AND ANGLE PATTERN
100％ FACTORY TESTED
Stop Valve Series
Valve Specifications Table
| Valve series | Max. working Pressure MP “a* | Working Temp, range °C | Type & size of end Connections | ||
|---|---|---|---|---|---|
| BI-LOK | Pipe Thread | Socket Weld | |||
| VBM | 6.9 @38 °C | -30〜120 | 1/4″ | — | — |
| *VB*” | 20.5 @38 °C | -10-(120)230 | 1/8”—3/4、¢6-12 | 1/8—1/2 | — |
| VN | 24.5 @38 °C | -10-230 | 1/8″—1/2″, ^6-12 | 1/8—1/2 | 1/4-1/2 |
| VNN | 24.5 @38 °C | -10-150 | 1/8″—1/2 二”-12 | 1/8—1/2 | 1/4-1/2 |
| VE | 6.9 @38 °C | -10-100 | 一 | 1/4—1/2 | — |
| VET | 1 @38°C | -10-100 | 一 | 1/4—378 | — |
| VQ | 2.9 @38 °C | -10-100 | 1/4–3/8″ | 1/4—378 | — |
| VH | 24.5 @38 °C | -10-400 | 1/4–1/2″ 收6-12 | 1/4—1/2 ”-12 | 1/4-1/2 夕 6-12 |
| VC | 10.3 @38 °C | -196-120 | 一 | 1/8—1/2 | 1/8-1/2 |
The valve series symbol for the VB series varies depending on the stem shape. For details, please refer to pages 2 and 3. *Please contact sales when ordering for applicable fluids.
Valve Part Number Definition
Ｖ□□－□□□□－□
① ②③④⑤ ⑥
①Inch BI-LOK End
| Symbol | 4 | 6 | 8 | 12 |
|---|---|---|---|---|
| Size | 1/4″ | 3/8″ | 1/2″ | 3/4″ |
②Metric BI-LOK End
| Symbol | 6M | 8M | 10M | 12M |
|---|---|---|---|---|
| Size | 6mm | 8mm | 10mm | 12mm |
③Pipe Thread or Socket Weld End
| Symbol | 2 | 4 | 6 | 8 | 12 | 16 |
|---|---|---|---|---|---|---|
| Size | 1/8B | 1/4B | 3/8B | 1/2B | 3/4B | 1B |
④Outlet end Connection size IN
⑤Outlet Connection end Omitted when identical with the Inlet Port.
⑥Style of body ：Straight type ／ A：Angle type
VB＊Series
Specification
| Max.Working Pressure : 20.5MPa@ 38 C | |||
| Working Temperature range : Metal Seal Stem : 一10〜230℃ (Valve Series ： VBK) Soft Seal Stem : 一10〜120℃ (Valve Series ： VBF) | |||
| Lubricant : Silicon base, Fluorocabon base | |||
| Flow Coefficient | VBK | VBF | |
| Orifice | 2.0mm | 0.1 | 0.1 |
| 4.3mm | 0.3 | 0.25 | |
| 6.3mm | 0.8 | 0.7 | |
| 9.5mm | 1.7 | 1.6 | |
VB
＊ Ｋ：Disk Type Stem
Ｆ：Soft Seal Type Stem
Materials
| No. | Part Description | Qty | Material |
|---|---|---|---|
| 1 | Body | 1 | SUS316 |
| 2 | Stem | 1 | SUS316 |
| 2-1 | Disk | 1 | SUS630 |
| 2-2 | Disk Plate | 1 | SUS630 |
| 2-3 | Soft seat | 1 | PCTFE |
| 3 | Packing ring | 2 | SUS316 |
| 4 | Packing | 2 | PTFE |
| 5 | Packing | 1 | RF PTFE |
| 6 | Bonnet | 1 | SUS316 |
| 7 | Lock nut | 1 | SUS316 |
| 8 | Lock nut | 1 | SUS316 |
| 9 | Handle | 1 | Phenol resin |
Dimensions
Dimensions BI-LOK End
| Part No. | Connect size | Orifice size mm | Dimensions mm | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ©A | L | Li | F | H | Hi | H2 | h | hi | B | C | G | t | W | E | M | |||
| in | mm | |||||||||||||||||
| VB*-2D-S | 1/8 | 3.18 | 2 | 28.9 | 22.2 | 13 | 75 | 3.5 | 10.5 | 42 | 3.5 | 17.5 | 11.11 | 14.29 | 7/16 | 38 | 16 | M3x0.5 |
| VB*-4D-S | 1/4 | 6.35 | 4.3 | 29.7 | 22.2 | 15.4 | 75 | 3.5 | 10.5 | 42 | 3.5 | 17.5 | 14.29 | 14.29 | 7/16 | 38 | 16 | M3x0.5 |
| VB*-6D-S | 3/8 | 9.53 | 6.3 | 31.3 | 23.8 | 17 | 82.5 | 4 | 13.5 | 46 | 3.5 | 20.6 | 17.46 | 14.29 | 7/16 | 48 | 19 | M4x0.7 |
| VB*-8D-S | 1/2 | 12.7 | 6.3 | 35.7 | 25.4 | 23 | 82.5 | 4 | 14.5 | 46 | 3.5 | 20.6 | 22.23 | 14.29 | 7/16 | 48 | 19 | M4x0.7 |
| VB*-12D-S | 3/4 | 19.05 | 9.5 | 48.4 | 38.1 | 24.6 | 99.5 | 6 | 19.5 | 54 | 3.5 | 31.8 | 28.58 | 17.46 | 1/2 | 62 | 25 | M5x0.8 |
| VB*-6MD-S | — | 6 | 4.3 | 29.7 | 22.2 | 15.4 | 75 | 3.5 | 10.5 | 42 | 3.5 | 17.5 | 14 | 14.29 | 7/16 | 38 | 16 | M3x0.5 |
| VB*-8MD-S | — | 8 | 4.3 | 29.7 | 22.2 | 16.3 | 75 | 3.5 | 10.5 | 42 | 3.5 | 17.5 | 17 | 14.29 | 7/16 | 38 | 16 | M3x0.5 |
| VB*-10MD-S | — | 10 | 6.3 | 33.2 | 25.4 | 17.3 | 82.5 | 4 | 14.5 | 46 | 3.5 | 20.6 | 19 | 14.29 | 7/16 | 48 | 19 | M4x0.7 |
| VB*-12MD-S | — | 12 | 6.3 | 35.6 | 25.4 | 22.9 | 82.5 | 4 | 14.5 | 46 | 3.5 | 20.6 | 22 | 14.29 | 7/16 | 48 | 19 | M4x0.7 |
Dimentions Pipe thread End
| Part No. | Connect size (T) | Orifice size mm | Dimensions mm | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | H | Hi | H2 | h | hi | B | G | t | W | ||||
| Rc | NPT | ||||||||||||
| VB*-2RF-S | VB*-2NF-S | 1/8 | 4.3 | 24.5 | 75 | 3.5 | 14 | 42 | 3.5 | 20.6 | 14.29 | 7/16 | 38 |
| VB*-4RF-S | VB*-4NF-S | 1/4 | 6.3 | 27 | 82.5 | 4 | 15 | 46 | 3.5 | 20.6 | 14.29 | 7/16 | 48 |
| VB*-6RF-S | VB*-6NF-S | 3/8 | 6.3 | 27 | 82.5 | 4 | 15 | 46 | 3.5 | 23.8 | 14.29 | 7/16 | 48 |
| VB*-8RF-S | VB*-8NF-S | 1/2 | 9.5 | 38.1 | 99.5 | 6 | 20 | 54 | 3.5 | 31.8 | 17.46 | 1/2 | 62 |
Bottom Maunting（Option）：Symbol Mark“BT”example：VBK－4D－S－BT
