Chemical Liquid Valve, Manually Operated Type LVH Series
Brand :
SMC
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- Refer to the manufacturer's catalog for specification and material details.
- Product images may be representative images. Refer to the manufacturer's catalog for shape details.
Product Description
A valve for use with chemical solutions. Includes a guide ring to prevent internal leakage.
[Features]
· Integrated fitting / screw-in threaded type.
· Compatible with locking and non-locking types.
· PTFE diaphragm that prevents the formation of micro-bubbles.
· With residual liquid prevention functionality.
· Body with outstanding corrosion resistance (new PFA).
Chemical Liquid Valve, Manually Operated, Integrated Fitting Type / Threaded Type LVH Series Specifications
LVH Series external appearance
Integrated fitting type external appearance
Threaded type external appearance
Integrated Fitting Type Specifications
| Model | LVH20 | LVH30 | LVH40 | |
|---|---|---|---|---|
| Tube Outer Diameter*1 | Metric Size | 6 | 10 | 12 |
| Inch Size | 1/4 | 3/8 | 1/2 | |
| Orifice Diameter | ø4 mm | ø8 mm | ø10 mm | |
| Flow Rate Characteristics | Kv | 0.3 | 1.4 | 2.1 |
| Cv | 0.35 | 1.7 | 2.5 | |
| Withstand Pressure (MPa) | 1 | |||
| Operating Pressure (MPa) | A → B | 0 to 0.5 | ||
| B → A | 0 to 0.2 | |||
| Back Pressure (MPa) | 0.3 or less | |||
| Valve Leakage Rate (cm3/min) | 0 (with hydraulic pressure) | |||
| Operating Method | Toggle type (non-locking/locking) | |||
| Fluid Temperature (°C) | 0 to 60 | |||
| Ambient Temperature (°C) | 0 to 60 | |||
| Weight (kg) | 0.06 | 0.14 | 0.26 | |
*1: See the SMC catalog for details regarding applicable tubing sizes.
Threaded Type Specifications
| Model | LVH20 | LVH30 | LVH40 | |
|---|---|---|---|---|
| Piping Connection Port Diameter | 1/8, 1/4 | 1/4, 3/8 | 3/8 / 1/2 | |
| Orifice Diameter | ø4 mm | ø8 mm | ø12 mm | |
| Flow Rate Characteristics | Kv | 0.3 | 1.4 | 2.1 |
| Cv | 0.35 | 1.7 | 2.5 | |
| Withstand Pressure (MPa) | 1 | |||
| Operating Pressure (MPa) | A → B | 0 to 0.5 | ||
| B → A | 0 to 0.2 | |||
| Back Pressure (MPa) | 0.3 or less | |||
| Valve Leakage Rate (cm3/min) | 0 (with hydraulic pressure) | |||
| Operating Method | Toggle type (non-locking/locking) | |||
| Fluid Temperature (°C) | 0 to 60 | |||
| Ambient Temperature (°C) | 0 to 60 | |||
| Weight (kg) | SUS | 0.15 | 0.36 | 0.71 |
| PPS | 0.04 | 0.09 | 0.17 | |
| PFA | 0.05 | 0.11 | 0.20 | |
Different Diameter Tubing Applicable with Reducer
Different diameter tubing can be selected (within a body class) by using a nut and insert bushing (reducer).
| Body class | Tubing Outer Diameter | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Metric Size | Inch Size | ||||||||||
| 3 | 4 | 6 | 8 | 10 | 12 | 1/8 | 3/16 | 1/4 | 3/8 | 1/2 | |
| 2 | ● | ● | ○ | - | - | - | ● | ● | ○ | - | - |
| 3 | - | - | ● | ● | ○ | - | - | - | ● | ○ | - |
| 4 | - | - | - | - | ● | ○ | - | - | - | ● | ○ |
- *● With reducer
- *Refer to SMC catalog for information on changing tubing sizes.
Product Dimensions
Integrated Fitting Type
Integrated fitting type dimensional drawing
(Units: mm)
| Model | A | B | C | D | E | F | G | H1 | H2 | J | K | L | M | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LVH20□ | 30 | 30 | 52 | 44 | 11 | 79 | 10 | 72.5 | 74 | 4 | 20 | 37 | 3.5 | 27 |
| LVH30□ | 36 | 47 | 81.5 | 56 | 16.5 | 106 | 19 | 111 | 113 | 7.5 | 34 | 46 | 5.5 | 37.5 |
| LVH40□ | 46 | 60 | 100 | 68 | 22.5 | 131 | 20.5 | 139 | 143 | 8 | 42 | 57 | 5.5 | 50 |
Threaded Type
Body material: SUS dimensional drawing
Body material: PPS dimensional drawing
Body material: PFA dimensional drawing
(Units: mm)
| Model | Body Material | A | B | C | D | E | F | G | H1 | H2 | J | K | L | M | N | P |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LVH20□ | SUS | 30 | 33 | 54.5 | - | 10 | M5 × 0.8 | 10 | 75 | 76.5 | - | 22 | 22 | - | 27 | Rc 1/8 and 1/4, NPT 1/8 and 1/4, G 1/8 and 1/4 |
| LVH30□ | 36 | 47 | 81 | - | 13 | M6 × 1 | 19 | 110.5 | 112.5 | - | 37 | 26 | - | 37 | Rc 1/4 and 3/8, NPT 1/4 and 3/8, G 1/4 and 3/8 | |
| LVH40□ | 46 | 60 | 99 | - | 16 | M8 × 1.25 | 20.5 | 138 | 142 | - | 47.5 | 33.5 | - | 50 | Rc 3/8 and 1/2, NPT 3/8 and 1/2, G 3/8 and 1/2 | |
| LVH20□ | PPS | 30 | 36 | 55 | 44 | 11 | - | 10 | 75.5 | 77 | 4 | 20 | 37 | 3.5 | 27 | Rc 1/4, NPT 1/4, G 1/4 |
| LVH30□ | 36 | 47 | 80 | 56 | 15 | - | 19 | 109.5 | 111.5 | 7.5 | 34 | 46 | 5.5 | 37 | Rc 3/8, NPT 3/8, G 3/8 | |
| LVH40□ | 46 | 60 | 99.5 | 68 | 22 | - | 20.5 | 138.5 | 142.5 | 8 | 42 | 57 | 5.5 | 50 | Rc 1/2, NPT 1/2, G 1/2 | |
| LVH20□ | PFA | 30 | 36 | 58.5 | 44 | 14.5 | - | 10 | 79 | 80.5 | 4 | 20 | 37 | 3.5 | 27 | Rc 1/4, NPT 1/4, G 1/4 |
| LVH30□ | 36 | 47 | 84 | 56 | 19 | - | 19 | 113.5 | 115.5 | 7.5 | 34 | 46 | 5.5 | 37 | Rc 3/8, NPT 3/8, G 3/8 | |
| LVH40□ | 46 | 60 | 99.5 | 68 | 22 | - | 20.5 | 138.5 | 142.5 | 8 | 42 | 57 | 5.5 | 50 | Rc 1/2, NPT 1/2, G 1/2 |
Product Diagram
Integrated fitting type diagram
Threaded type diagram
With reducer diagram
| Number | Part Name | Material | Notes |
|---|---|---|---|
| 1 | Actuator Section | PP | - |
| 2 | Body | PFA | Integrated Fitting Type |
| SUS | Threaded Type | ||
| PPS | |||
| PFA | |||
| 3 | Diaphragm | PTFE | - |
| 4 | End Plate | PPS | PFA body only |
| 5 | Insert Bushing | PFA | - |
| 6 | Nut | PFA | - |
| 7 | Lever | PP | - |
| 8 | Collar | PFA | - |
Precautions
Piping / Integrated Fitting Type
- *Use dedicated tools to connect tubing.
- *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 is sufficiently tight. Refer to the proper tightening torques shown below.
Tightening Torque for Piping
- Body class 2: 1.5 to 2 N·m
- Body class 3: 3 to 3.5 N·m
- Body class 4: 7.5 to 9 N·m
Piping and Threaded Type
- *Do not use metal fittings with a resin body (taper threads). This will cause damage to the valve body.
Other
- *Do not use if air leakage increases or the equipment does not operate correctly. After mounting, perform suitable function and leak tests to confirm that the mounting is correct.
- *Mount and use the product only after reading and understanding the contents of the instruction manual. Be sure to keep the manual somewhere handy so that it can be referred to whenever needed.
- *Be sure to read the individual product precautions before use.
- *See the SMC catalog for product information other than the above.