IHARA SCIENCE CORPORATION
IHARA VQ series Needle Stop Valves
Product Made In Japan
Manufacturer: IHARA SCIENCE CORPORATION
Model: VQ Series
Features
316 STAINLESS STEEL BODY STANDARD
PRESSURE TO 24.5 MPa
WIDE TEMPERATURE RANGE －196～230℃
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
Specifications
Max. Working Pressure: 2.9 MPa @ 38℃
Working Temperature Range: -10~100℃
Cv (Orifice): 0.4
Lubricant: Silicon base, Fluorocabon base
Materials
| No. | Part Description | Qty | Material |
|---|---|---|---|
| 1 | Body | 1 | SUS316 |
| 2 | Stem | 1 | SUS630 |
| 3 | Packing ring | 2 | SUS316 |
| 4 | V Packing | 1 | PTFE |
| 5 | Bonnet | 1 | SUS316 |
| 6 | Lock nut | 1 | SUS316 |
| 7 | Handle | 1 | A2024 |
| 8 | Panel Lock Nut | 1 | SUS304 |
Dimensions BI-LOK End
| Part No. Straight | Tube O.D | Orifice size mm | Dimensions mm | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| in | mm | L | Li | F | H | Hi | h | hi | B | C | G | t | W | ||
| VQ-4D-S | 1/4 | 6.35 | 3.5 | 29.8 | 22.3 | 15.4 | 59 | 3 | — | — | 17 | 14.24 | — | — | 36 |
| VQ-6D-S | 3/8 | 9.53 | 4.3 | 31.5 | 24 | 17 | 59 | 3 | — | — | 17 | 17.46 | — | — | 36 |
| VQ-4D-S-P | 1/4 | 6.35 | 3.5 | 33.5 | 26 | 15.4 | 59 | 3 | 14 | 6.5 | 22 | 14.29 | 22 | M18 | 36 |
| VQ-6D-S-P | 3/8 | 9.53 | 4.3 | 33.5 | 26 | 17 | 59 | 3 | 14 | 6.5 | 22 | 17.46 | 22 | M18 | 36 |
*Note: When a panel mount lock nut is attached, the valve face-to-face dimensions will differ from those without a lock nut.
Dimensions Pipe thread End
| Part No. Straight | Part No. Angle | T (RC) | Orifice size mm | Dimensions mm | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | H | Hi | h | hi | B | G | t | W | ||||
| VQ-4RF-S | 1/4 | 4.3 | 24 | 59 | 3 | — | — | 17 | — | — | 36 | |
| VQ-4RF-S-P | 1/4 | 4.3 | 26 | 59 | 3 | 14 | 6.5 | 22 | 22 | 18M | 36 | |
| VQ-4RF-A | 1/4 | 4.3 | 23.5 | 53.3 | 3 | — | — | 17 | — | — | 36 | |
| VQ-4RF-A-P | 1/4 | 4.3 | 26 | 59 | 3 | 14 | 6.5 | 22 | 22 | 18M | 36 | |
Panel Mounting Lock Nut（option）: Symbol Mark“P”
example : VQ-6D-S-P
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