Introduction & Key Features
The SMC LPVA Series Pinch Valve is an air-operated type designed for efficient fluid control. It offers easy tube replacement from the front access, allowing users to simply open the cover and insert the tube.
A significant advantage is the reduction in work time, with a maximum of 40% improvement. Removal of multiple tubes can be done simultaneously, eliminating the need to remove each tube individually.
Comparison:
- LPVA Series: Cover opening time: 2s x 5 times, Tube removal time: 2s x 1 time = 12 seconds total.
- Existing Model: Cover opening time: 2s x 5 times, Tube removal time: 2s x 5 times = 20 seconds total. (Requires removal of each tube before replacement).
The LPVA Series is also characterized by its compact and lightweight design.
Diagram showing the LPVA Series with a focus on 'Easy tube replacement from front access' and 'Lock pin'. Another diagram illustrates the time comparison between LPVA and existing models for tube replacement.
Series Variations
| Series | Valve type | Applicable tubing O.D. |
|---|---|---|
| LPVA21 | N.C. (Normally Closed) | ø3/8", ø7/16", ø1/2" |
| LPVA22 | N.O. (Normally Open) | ø3/8", ø7/16", ø1/2" |
Note: * In case of 5 units
Compact and Lightweight Design
The LPVA Series offers a compact and lightweight construction, making it suitable for various installations.
Dimensions:
- N.C. type: Overall length 124.3 mm, Width 81.5 mm, Height 20.5 mm, Weight 372.8 g.
- N.O. type: Overall length 93 mm, Width 50.2 mm, Height 20.5 mm, Weight 256.6 g.
Small Pitch: The series supports a small pitch of 41 mm between valves.
With Cover: Features a structure that can be easily opened and closed, with a lock pin mechanism.
Diagrams illustrating the N.C. and N.O. type dimensions, showing overall length, width, height, and weight. A diagram shows the 'Small pitch' configuration and the 'With cover' mechanism with lock pin.
Application Examples
The LPVA Series is applicable in various fields:
- Culture solution/Bioprocess equipment: Used for controlling fluid lines in bioprocessing. (Diagram shows a rack of pinch valves connected to tubes in a lab setting, described as 'Total 30 units in upper and lower sections').
- Waste liquid line for the blood analyzer: Suitable for managing waste fluids in analytical equipment. (Diagram shows a blood analyzer machine).
- Bacteria identification and inspection device: Used in laboratory equipment for analysis. (Diagram shows a compact inspection device).
- DNA analyzer: Applicable in genetic analysis equipment. (Diagram shows a DNA analyzer).
- Liquid filling device: Used in automated filling systems. (Diagram shows an automated liquid filling machine).
Selectable Port Position & Tube Size
The port position can be selected according to installation conditions, offering Nil (0°), R (90°), U (180°), and L (270°) cover open directions.
Tube size can be changed by exchanging the tube adapter, supporting three sizes: ø3/8", ø7/16", and ø1/2".
Features:
- ON/OFF auto switch: Can be installed on all 4 body sides.
- Tube pinching condition can be monitored.
Diagram illustrating port positions (Nil, R, U, L) and the selectable cover open directions. Diagrams show the tube adapters for ø3/8", ø7/16", and ø1/2" tubes. An illustration shows the auto switch mounting.
Related Equipment
Solenoid Type Pinch Valve LPV Series is available as related equipment. More information can be viewed online.
Diagram showing Solenoid Type Pinch Valve LPV Series models (LPV22-562-14, LPV25-SK0-14).
How to Order
The ordering code structure is exemplified by LPVA 21-09:
- Air operated type: LPVA
- Valve type: 21 (N.C. type), 22 (N.O. type)
- Tubing O.D. size: 09 (ø3/8"), 11 (ø7/16"), 13 (ø1/2")
- Option (Port position): Nil (Cover open direction 0°), R (90°), U (180°), L (270°)
Diagram illustrating the 'How to Order' code structure with port position options.
Specifications
| LPVA21 | LPVA22 | |
|---|---|---|
| Valve type | N.C. (Normally closed) | N.O. (Normally open) |
| Applicable fluid | Gas and liquid applicable to the tube | |
| Fluid temperature*1 | 0 to 60°C (No freezing) | |
| Ambient temperature | 5 to 60°C | |
| Fluid | Air | |
| Compressed air purity class | ISO8573-1: 2010 [2:4:3] to [2:6:3] | |
| Pilot fluid pressure | 0 to 0.35 MPa | 0.35 to 0.4 MPa |
| Pinch force control range | 0.1 to 0.4 MPa | 0.0 MPa (no pressurization) |
| Pinch force release range | Free | |
| Mounting orientation | Free | |
| Proof pressure | 0.6 MPa | |
| Weight | 372.8 g | 256.6 g |
*1 The operating temperature conditions vary depending on the characteristics of the tube. For more details, please refer to the compatible tube table.
Option: Tubing Adapter
Model: LPVA-09 A
| Tubing O.D. size | |
|---|---|
| 09 | ø3/8" |
| 11 | ø7/16" |
| 13 | ø1/2" |
* 2 pcs (1 set) including M2 pan head screw
Auto Switches (To Be Ordered Separately)
Refer to the Web Catalog for further information on auto switches.
| Auto switch model | Special function | Wiring (Output) | Electrical entry | Indicator light | Load voltage (DC) | Lead wire length [m] | |||
|---|---|---|---|---|---|---|---|---|---|
| 0.5 (Nil) | 1 (M) | 3 (L) | 5 (Z) | ||||||
| D-M9NV D-M9N (Standard) |
Perpendicular | 3-wire (NPN) | Grommet | Yes | 5 V | ● | ● | ● | ● |
| D-M9PV D-M9P |
12 V | ● | ● | ● | ● | ||||
| D-M9BV D-M9B |
In-line | 2-wire | Yes | 12 V | ● | ● | ● | ● | |
| D-M9NWV D-M9NW |
Perpendicular | 3-wire (NPN) | Grommet | 2-color indicator | 5 V | ● | ● | ● | ● |
| D-M9PWV D-M9PW |
12 V | ● | ● | ● | ● | ||||
| D-M9BWV D-M9BW |
In-line | 2-wire | Yes | 12 V | ● | ● | ● | ● | |
* Please order auto switch separately.
Compatible Tube Table
This table lists compatible tubes with their specifications.
| Model | Manufacturer | Trademark | Series | Part no. | O.D. in [mm] | I.D. in [mm] | Thickness [mm] | Shore hardness | Operating fluid pressure*1 [MPa] |
|---|---|---|---|---|---|---|---|---|---|
| LPVA2□-09 | AdbantaSil | AdvantaPure | APST | APST-0125-0375 | 3/8" (9.5) | 1/8" (3.2) | 3.18 | 50 | 0.26 |
| LPVA2□-09 | AdbantaSil | AdvantaPure | APST | APST-0188-0375 | 3/8" (9.5) | 3/16" (4.8) | 2.39 | 50 | 0.14 |
| LPVA2□-09 | AdbantaSil | AdvantaPure | APST | APST-0250-0375 | 3/8" (9.5) | 1/4" (6.4) | 1.59 | 50 | 0.09 |
| LPVA2□-09 | AdvantaPure | APSH | APSH-P-0125 | 3/8" (9.5) | 1/8" (3.2) | 3.18 | — | 0.6*2 | |
| LPVA2□-09 | AdvantaFlex | APAF-BP | APAF-BP-0188-0375 | 3/8" (9.5) | 3/16" (4.8) | 2.38 | 65 | 0.22 | |
| LPVA2□-09 | AdvantaFlex | APAF-BP | APAF-BP-0250-0375 | 3/8" (9.5) | 1/4" (6.4) | 1.59 | 65 | 0.14 | |
| LPVA2□-09 | SAINT-GOBAIN | C-FLEX | C-Flex 374 | 374-188-3 | 3/8" (9.5) | 3/16" (4.8) | 2.35 | 60 | 0.21 |
| LPVA2□-09 | SAINT-GOBAIN | C-FLEX | C-Flex 374 | 374-250-2 | 3/8" (9.5) | 1/4" (6.4) | 1.55 | 60 | 0.11 |
| LPVA2□-09 | DuPont | Pharma | Pharma80 | — | 3/8" (9.5) | 3/16" (4.8) | 2.35 | 80 | 0.6*2 |
| LPVA2□-09 | DuPont | Pharma | Pharma80 | — | 3/8" (9.5) | 1/4" (6.4) | 1.55 | 80 | 0.6*2 |
| LPVA2□-11 | AdbantaSil | AdvantaPure | APST | APST-0188-0438 | 7/16" (11.1) | 3/16" (4.8) | 3.18 | 50 | 0.17 |
| LPVA2□-11 | AdbantaSil | AdvantaPure | APST | APST-0250-0438 | 7/16" (11.1) | 1/4" (6.4) | 2.38 | 50 | 0.12 |
| LPVA2□-11 | AdbantaSil | AdvantaPure | APST | APST-0313-0438 | 7/16" (11.1) | 5/16" (7.9) | 1.59 | 50 | 0.08 |
| LPVA2□-11 | AdvantaPure | APSH | APSH-P-0188 | 7/16" (11.7) | 3/16" (4.8) | 3.49 | — | 0.6*2 | |
| LPVA2□-11 | AdvantaFlex | APAF-BP | APAF-BP-0250-0438 | 7/16" (11.1) | 1/4" (6.4) | 2.38 | 65 | 0.16 | |
| LPVA2□-11 | SAINT-GOBAIN | C-FLEX | C-Flex 374 | 374-250-3 | 7/16" (11.2) | 1/4" (6.4) | 2.40 | 60 | 0.15 |
| LPVA2□-11 | WATSON MARLOW | Biopure | Biopure | BPSHP0188- (C,D) | 7/16" (10.3) | 3/16" (4.8) | — | — | 0.6*2 |
| LPVA2□-13 | AdbantaSil | AdvantaPure | APST | APST-0250-0500 | 1/2" (12.7) | 1/4" (6.4) | 3.18 | 50 | 0.15 |
| LPVA2□-13 | AdbantaSil | AdvantaPure | APST | APST-0313-0500 | 1/2" (12.7) | 5/16" (7.9) | 2.38 | 50 | 0.12 |
| LPVA2□-13 | AdbantaSil | AdvantaPure | APST | APST-0375-0500 | 1/2" (12.7) | 3/8" (9.5) | 1.59 | 50 | 0.07 |
| LPVA2□-13 | AdvantaPure | APSH | APSH-P-0250 | 1/2" (12.7) | 1/4" (6.4) | 3.18 | — | 0.6*2 | |
| LPVA2□-13 | AdvantaFlex | APAF-BP | APAF-BP-0250-0500 | 1/2" (12.7) | 1/4" (6.4) | 3.18 | 65 | 0.21 | |
| LPVA2□-13 | AdvantaFlex | APAF-BP | APAF-BP-0313-0500 | 1/2" (12.7) | 5/16" (7.9) | 2.38 | 65 | 0.16 | |
| LPVA2□-13 | AdvantaFlex | APAF-BP | APAF-BP-0375-0500 | 1/2" (12.7) | 3/8" (9.5) | 1.59 | 65 | 0.13 | |
| LPVA2□-13 | SAINT-GOBAIN | C-FLEX | C-Flex 374 | 374-250-4 | 1/2" (12.7) | 1/4" (6.4) | 3.15 | 60 | 0.21 |
| LPVA2□-13 | SAINT-GOBAIN | C-FLEX | C-Flex 374 | 374-313-3 | 1/2" (12.7) | 5/16" (7.9) | 2.40 | 60 | 0.14 |
| LPVA2□-13 | SAINT-GOBAIN | C-FLEX | C-Flex 374 | 374-375-2 | 1/2" (12.7) | 3/8" (9.6) | 1.55 | 60 | 0.09 |
| LPVA2□-13 | WATSON MARLOW | Biopure | Biopure | BPSHP0250- (C,D) | 1/2" (12.4) | 1/4" (6.4) | 3.00 | — | 0.6*2 |
| LPVA2□-13 | DuPont | Pharma | Pharma80 | — | 1/2" (12.7) | 1/4" (6.4) | 3.15 | 80 | 0.6*2 |
| LPVA2□-13 | DuPont | Pharma | Pharma80 | — | 1/2" (12.7) | 3/8" (9.5) | 1.60 | 80 | 0.3 |
*1 The operating fluid pressure listed is the actual measured value during testing and is provided for reference only. Please note that it does not guarantee the fluid pressure is suitable for pinching. For operating pressure and temperature conditions, please refer to the usage specifications provided by each tube manufacturer.
*2 In the case of the N.C. valve type
Pinch Force Characteristic Curve
Graph showing Pinch force [N] on the Y-axis versus Pilot pressure [MPa] on the X-axis. Two curves are shown: 'N.C. type' and 'N.O. type'. The N.C. type shows a higher pinch force at lower pilot pressures due to spring action, while the N.O. type requires pilot pressure to generate pinch force.
Dimensions
Detailed dimensions for LPVA21 and LPVA22 series, including panel fitting dimensions.
LPVA21 Series
Diagrams showing the LPVA21 series valve from top (cover open), side, and front views, including dimensions like overall length, width, height, and mounting hole details. Also shows panel fitting dimensions with hole sizes and spacing. A table lists specific dimensions (L1, L2, D1) for different part numbers (e.g., LPVA21-09, LPVA21-09-R, LPVA21-09-L).
LPVA22 Series
Diagrams showing the LPVA22 series valve from top (cover open), side, and front views, including dimensions and mounting hole details. Also shows panel fitting dimensions. A table lists specific dimensions (L1, L2, D1) for different part numbers (e.g., LPVA22-09, LPVA22-09-R, LPVA22-09-L).
* The maximum dimension in the specified direction of the port is increased by 3 mm.
Specific Product Precautions
Be sure to read these before handling the products. Refer to the back cover for safety instructions. For precautions, refer to the “Operation Manual” on the SMC website: https://www.smcworld.com
Warning
❗ Do not insert fingers, hands or other objects between the tube mounting parts. If a finger or hand is inserted between the tube fitting parts while the valve is in operation, it may become trapped or injured. Do not insert fingers, hands or other objects between the tube mountings.
Caution
- When directly connecting a pipe fitting to the cylinder, please use the series type shown in the diagrams. Refer to the Fittings and Tubing Precautions for handling One-touch fittings.
- Do not use this product in applications which may adversely affect human life (e.g. medical equipment connected to the human body for drip infusion).
[How to adjust the pinch force when using the N.C. type]
The N.C. type uses spring force to pinch the tube, so if no adjustment is made, the pinch force will be excessive for the tube used, which may affect the tube life. If pinch force adjustment is required, it is recommended to use a multi-stage control with a circuit like the examples below.
Example 1: Diagram shows 'Electro-pneumatic regulator use' with low and high pressure adjustment (valves, open/close).
Example 2: Diagram shows 'Regulator valve use' with low pressure side (valve closed) and low pressure side (valve open).
Panel Mounting
Select the bolt length for panel mounting based on the recommended screw length and tighten the bolts properly within the recommended tightening torque. If the screw length of the bolt is insufficient, it may cause the product to be poorly mounted on the panel or to fall off. If the screw length of the bolt is excessive, the bolt may interfere with the joint, resulting in inadequate mounting on the panel. Use the recommended tightening torque. Excessive tightening torque may cause damage to the threaded part of the bolt, while insufficient tightening torque may cause inadequate panel mounting or the product to fall.
Diagram illustrating panel mounting with a table showing recommended screw length (L) based on panel thickness (t) and bolt type (M5 x 0.8, 10-32UNF) for LPVA2□-09, LPVA2□-11, LPVA2□-13.
*1 The recommended torque range is ±10% of the recommended tightening torque value.
Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or equipment damage. They indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC)*1), and other safety regulations.
Danger: Danger indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
Warning: Warning indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
Caution: Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
*1) ISO 4414: Pneumatic fluid power - General rules and safety requirements for systems and their components. ISO 4413: Hydraulic fluid power - General rules and safety requirements for systems and their components. IEC 60204-1: Safety of machinery - Electrical equipment of machines - Part 1: General requirements. ISO 10218-1: Robots and robotic devices - Safety requirements for industrial robots - Part 1:Robots etc.
General Warning
- The compatibility of the product is the responsibility of the person who designs the equipment or decides its specifications. Since the product specified here is used under various operating conditions, its compatibility with specific equipment must be decided by the person who designs the equipment or decides its specifications based on necessary analysis and test results. The expected performance and safety assurance of the equipment will be the responsibility of the person who has determined its compatibility with the product. This person should also continuously review all specifications of the product referring to its latest catalog information, with a view to giving due consideration to any possibility of equipment failure when configuring the equipment.
- Only personnel with appropriate training should operate machinery and equipment. The product specified here may become unsafe if handled incorrectly. The assembly, operation and maintenance of machines or equipment including SMC products must be performed by an operator who is appropriately trained and experienced.
- Do not service or attempt to remove product and machinery/equipment until safety is confirmed. 1. The inspection and maintenance of machinery/equipment should only be performed after measures to prevent falling or runaway of the driven objects have been confirmed. 2. When the product is to be removed, confirm that the safety measures as mentioned above are implemented and the power from any appropriate source is cut, and read and understand the specific product precautions of all relevant products carefully. 3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
- SMC products cannot be used beyond their specifications. They are not developed, designed, and manufactured to be used under the following conditions or environments. Use under such conditions or environments is not allowed. 1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to direct sunlight. 2. Use for nuclear power, railways, aviation, space equipment, ships, vehicles, military application, equipment affecting human life, body, and property, combustion equipment, entertainment equipment, emergency shut-off circuits, press clutches, brake circuits, safety equipment, etc., and use for applications that do not conform to standard specifications such as catalogs and operation manuals. 3. Use for interlock circuits, except for use with double interlock such as installing a mechanical protection function in case of failure. Please periodically inspect the product to confirm that the product is operating properly.
General Caution
SMC develops, designs, and manufactures products to be used for automatic control equipment, and provides them for peaceful use in manufacturing industries. Use in non-manufacturing industries is not allowed. Products SMC manufactures and sells cannot be used for the purpose of transactions or certification specified in the Measurement Act of each country. The new Measurement Act prohibits use of any unit other than SI units in Japan.
Limited warranty and Disclaimer/ Compliance Requirements
The product used is subject to the following "Limited warranty and Disclaimer" and "Compliance Requirements". Read and accept them before using the product.
Limited warranty and Disclaimer
- The warranty period of the product is 1 year in service or 1.5 years after the product is delivered, whichever is first.*2) Also, the product may have specified durability, running distance or replacement parts. Please consult your nearest sales branch.
- For any failure or damage reported within the warranty period which is clearly SMC's responsibility, a replacement product or necessary parts will be provided. This limited warranty applies only to SMC's product independently, and not to any other damage incurred due to the failure of the product.
- Prior to using SMC products, please read and understand the warranty terms and disclaimers noted in the specified catalog for the particular products.
*2) Suction cups (Vacuum pads) are excluded from this 1 year warranty. A suction cup (vacuum pad) is a consumable part, so it is warranted for a year after it is delivered. Also, even within the warranty period, the wear of a product due to the use of the suction cup (vacuum pad) or failure due to the deterioration of rubber material are not covered by the limited warranty.
Compliance Requirements
- The use of SMC products with production equipment for the manufacture of weapons of mass destruction (WMD) or any other weapon is strictly prohibited.
- The exports of SMC products or technology from one country to another are governed by the relevant security laws and regulations of the countries involved in the transaction. Prior to the shipment of an SMC product to another country, assure that all local rules governing that export are known and followed.
Safety Instructions Be sure to read the “Handling Precautions for SMC Products” (M-E03-3) and “Operation Manual” before use.
Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
