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Fluoropolymer Needle Valve LVN Series
A fluoropolymer fitting with an integrated fitting construction.
[Features]
· Fluid adjustment range: 0 to 12 l/min.
· Integrated fitting construction: Hyper fitting, LQ2 series is used.
· Triple-seal construction.
· Nut locking mechanism.
· High flexural strength.
· Different tubing sizes can be selected.
· Material: New PFA.
(i)Caution
- For specifications and details, please refer to the catalog.
- Product images may be representative images. Refer to the catalog for details.
Part Number
Configured Part Number is shown.
Fluoropolymer Needle Valve LVN Series Specifications
LVN Series External Appearance
LVN Series Dimensional Drawing
| Model | A | B | C | D | E | F | G | H | J | K | S |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LVN20 | 48 | 24 | 12 | 88 | 34.5 | 6 | 4 | 14 | 20 | 18 | 2.4 |
| LVN30 | 60 | 30 | 18 | 110 | 43 | 9 | 5 | 25 | 26 | 24 | 7.5 |
| LVN40 | 72 | 36 | 22 | 124 | 52 | 11 | 6 | 25 | 33 | 30 | 8 |
Unit: mm
Structural Drawing
LVN Series Structural Drawing
| No. | Part Name | Material |
|---|---|---|
| 1 | Body | PFA |
| 2 | Needle | PCTFE |
| 3 | V seal | PTFE |
| 4 | Lock nut | PVDF |
| 5 | Adjustment handle | PVDF |
| 6 | Insert bushing | PFA |
| 7 | Nut | PFA |
| 8 | Collar | PFA |
Standard Specifications
| Model | LVN20 | LVN30 | LVN40 | |||
|---|---|---|---|---|---|---|
| Tube outer diameterNote) | mm | 4, 6 | 6, 8, 10 | 10, 12 | ||
| Inch | 1/8 ", 3/16 ", 1/4 " | 1/4 ", 3/8 " | 3/8 ", 1/2 " | |||
| Orifice diameter | ø4.4 | ø8 | ø10 | |||
| Flow rate characteristics | Av × Kv | 0.4 | 1.2 | 1.8 | ||
| Cv | 0.5 | 1.4 | 2.2 | |||
| Withstand pressure (MPa) | 1 | |||||
| Operating pressure (MPa) | 0 to 0.5 | |||||
| Fluid temperature (°C) | 5 to 90 | |||||
| Ambient temperature (°C) | 0 to 60 | |||||
| Weight (kg) | 0.055 | 0.115 | 0.185 | |||
Note) For details of the applicable tubing sizes, refer to page 945.
Different Diameter Tubing Applicable with Reducer
Different diameter tubing can be selected (within a body class) by using a nut and insert bushing (reducer). Applicable fitting: LQ2.
| Body class | Connection tube outer diameter | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Metric Size | Inch Size | |||||||||
| 4 | 6 | 8 | 10 | 12 | 1/8 " | 3/16 " | 1/4 " | 3/8 " | 1/2 " | |
| 2 | ● | ○ | - | - | - | ● | ● | ○ | - | - |
| 3 | - | ● | ● | ○ | - | - | - | ● | ○ | - |
| 4 | - | - | - | ● | ○ | - | - | - | ● | ○ |
○ Basic size/● With reducer
Note) Refer to page 910 for information on changing tubing sizes.
Flow Rate Characteristics (Fluid: Water)
LVN20 flow rate characteristics
LVN30 flow rate characteristics
LVN40 flow rate characteristics
Caution) Because the LVN series cannot be used as a stop valve the flow rate will not be "0" when the number of needle rotations is "0." For details, refer to p. 945 in the catalog, "Precautions."
Precautions for piping
Examples of special tool use when connecting tubing
1. Use special tools to connect tubing.
| Body class | Torque (N⋅m) |
|---|---|
| 2 | 1.5 to 2.0 |
| 3 | 3.0 to 3.5 |
| 4 | 7.5 to 9.0 |
2. Tighten the nut until it touches the end surface of the body, and then tighten it an additional 1/8 turn to ensure that the nut has reached the end surface. If the nut will not turn any further, then it means a sufficient tightening has occurred. Refer to the appropriate tightening torques for piping shown to the left.
| Part Number |
|---|
| LVN20-S03 |
| LVN20-S0304 |
| LVN20-S0305 |
| LVN20-S0306 |
| LVN20-S0307 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Type | Applicable Tube Outer Dia. (mm) D (D1) | Applicable Tube O.D. (mm) D2 | Applicable Tube O.D. (inch) D (D1) | Applicable Tube O.D. (inch) D2 | Tube Size Standard | Size of Body |
|---|---|---|---|---|---|---|---|---|---|---|---|
SGD 200.90 | 1 Piece(s) | Quote | Related Components | - | - | 1/8 | - | - | 2 | ||
SGD 200.90 | 1 Piece(s) | Quote | Related Components | - | 4 | 1/8 | - | - | 2 | ||
SGD 200.90 | 1 Piece(s) | Quote | Related Components | - | - | 1/8 | - | - | 2 | ||
SGD 194.48 | 1 Piece(s) | Quote | Related Components | - | 6 | 1/8 | - | - | 2 | ||
SGD 194.48 | 1 Piece(s) | Quote | Related Components | - | - | 1/8 | 1/4 | - | 2 |
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Basic Information
| Material | PFA | Type of Related Component | Other |
|---|
Specification/Dimensions
-
Type
- Fitting Body
- Related Components
-
Applicable Tube Outer Dia. (mm) D (D1)
-
Applicable Tube O.D. (mm) D2
-
Applicable Tube O.D. (inch) D2
-
Tube Size Standard
- Metric
- Imperial
-
Size of Body
- 2
- 3
- 4
-
type
- LVN□0-S□□
-
Applicable Tube O.D. (inch) D (D1)
-
CAD
- 2D
- 3D
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
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