IHARA SCIENCE CORPORATION
IHARA VN Series Needle Stop Valves
Product Made In Japan
Manufacturer: IHARA SCIENCE CORPORATION
Model: VN 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
VNN Series
Specifications
Max. Working Pressure: 24.5MPa @ 38℃
Working Temperature Range: -10 ~ 230℃
Lubricant: Fluorocabon base
Materials
| No. | Part Description | Qty | Material |
|---|---|---|---|
| 1 | Body | 1 | SUS316 |
| 2 | Stem | 1 | SUS316 |
| 3 | Packing ring | 1 | SUS316 |
| 4 | Packing | 1 | Aramid fiber |
| 5 | Packing | 2 | RF PTFE |
| 6 | Gland | 1 | SUS316 |
| 7 | Packing nut | 1 | SUS304 |
| 8 | Lock nut | 1 | SUS304 |
| 9 | Handle | 1 | ADC12 |
Note: No.8 Lock nut is option.
Dimensions BI-LOK End
| Part No. | Connect size | Orifice size mm | Dimensions mm | Cv | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CA | L | Li | F | H | Hi | h | hi | B | C | G | G1 | t | W | E | M | ||||
| in | mm | ||||||||||||||||||
| VN-2D-S | 1/8 | 3.18 | 2 | 31.7 | 25 | 13 | 82 | 6 | 13 | 8 | 22 | 11.11 | 24 | 24 | M20 | 57 | 18 | M4x0.7 | 0.1 |
| VN-4D-S | 1/4 | 6.35 | 3.5 | 32.5 | 25 | 15.4 | 82 | 6 | 13 | 8 | 22 | 14.29 | 24 | 24 | M20 | 57 | 18 | M4x0.7 | 0.2 |
| VN-6D-S | 3/8 | 9.53 | 5 | 32.5 | 25 | 17 | 82 | 6 | 13 | 8 | 22 | 17.46 | 24 | 24 | M20 | 57 | 18 | M4x0.7 | 0.6 |
| VN-8D-S | 1/2 | 12.7 | 7.5 | 39.3 | 29 | 23 | 97 | 8 | 16 | 8 | 24 | 22.23 | 27 | 27 | M22 | 70 | 20 | M4x0.7 | 1.0 |
| VN-6MD-S | — | 6 | 3.5 | 32.5 | 25 | 15.4 | 82 | 6 | 13 | 8 | 22 | 14 | 24 | 24 | M20 | 57 | 18 | M4x0.7 | 0.2 |
| VN-8MD-S | — | 8 | 4.5 | 32.5 | 25 | 16.3 | 82 | 6 | 13 | 8 | 22 | 17 | 24 | 24 | M20 | 57 | 18 | M4x0.7 | 0.5 |
| VN-10MD-S | — | 10 | 6.3 | 32.8 | 25 | 17.3 | 82 | 6 | 13 | 8 | 22 | 19 | 24 | 24 | M20 | 57 | 18 | M4x0.7 | 0.6 |
| VN-12MD-S | — | 12 | 7.5 | 39.2 | 29 | 22.9 | 97 | 8 | 16 | 8 | 24 | 22 | 27 | 27 | M22 | 70 | 20 | M4x0.7 | 1.0 |
Dimensions Pipe thread End
| Part | T | Orifice size | Dimensions mm | ||||||||||||
| No. | (Rc) | mm | L | H | Hi | h | hi | B | D | G | Gi | t | W | E | M |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VN-4RF-S | 4-Jan | 5 | 29 | 97 | 8 | 16 | 8 | 24 | 23 | 27 | 27 | M22 | 70 | 20 | M4x0.7 |
| VN-6RF-S | 8-Mar | 6 | 32.5 | 99 | 8 | 18 | 8 | 32 | 32 | 27 | 27 | M22 | 70 | 25 | M5x0.8 |
| VN-8RF-S | 2-Jan | 7.1 | 35 | 99 | 8 | 18 | 8 | 32 | 32 | 27 | 27 | M22 | 70 | 25 | M5x0.8 |
Bottom Maunting（Option）：Symbol Mark“BT”example：VN－4D－S－BT
Panel Maunting Lock Nut（Option）：Symbol Mark“P”example：VN－4D－S－P
Panel Maunting Lock Nut（Option）：Symbol Mark“P”example：VN－4D－S－P
Dimensions Socket Weld End
| Part No. | Connect size (in) | Connect size (mm) | Orifice size (mm) | L (mm) | L2 (mm) | D (mm) |
|---|---|---|---|---|---|---|
| N-2PSW-1/8B | 1/8 | 11 | 5 | 29 | 12 | 23 |
| N-4PSW-1/4B | 1/4 | 14.3 | 5 | 29 | 12 | 23 |
| N-6PSW-3/8B | 3/8 | 17.8 | 6 | 32.5 | 13 | 32 |
| N-8PSW-1/2B | 1/2 | 22.2 | 7.1 | 35 | 13 | 32 |
