Pilot-Operated 2-Port Solenoid Valve For Dry Air VQ20/30 Series Single Unit

Caution
- Product images may be representative. Refer to the manufacturer's catalog for details.
Product Description
SMC Solenoid Valve.
[Features]
· Compact and lightweight yet with a large flow capacity
· High frequency operation
· Long operating life
· Built-in one-touch fitting makes piping work easy.
· DIN connector type, dust-proof, jet-proof (IP65) type enclosure compliant.
· Air-blowing workpieces, blowing-off, etc.
2-Port Solenoid Valve (Pilot Operated, For Dry Air) Single Unit Specifications

VQ20 External Appearance

VQ30 external appearance

Symbols
When the valve is closed, IN and OUT are blocked. However, if the pressure in port 2 is greater than the pressure in port 1, the fluid cannot be blocked.
Standard Specification Table
| Valve Specifications | Series | VQ20 | VQ30 | |
|---|---|---|---|---|
| Valve Construction | Pilot operated 2-port poppet type | |||
| Usable Fluids | Air*1 | |||
| Ambient Temperature and Operating Fluid Temperature | -10 to 50°C *2 | |||
| Lubrication | Not required | |||
| Manual Operation | Locking type (tool required)*3 | |||
| Impact Resistance / Vibration Resistance | 150 / 30 m/s2 *4 | |||
| Enclosure | Dust-proof*5 | |||
| Internal leakage cm3/min | 15 or less | |||
| External leakage cm3/min | 15 or less | |||
| Mounting Orientation | Free | |||
| Weight | 46 g | 80 g | ||
| Electrical Specifications | Coil Rated Voltage | 12 V DC, 24 V DC, 100 V AC, 110 V AC, 200 V AC, 220 V AC | ||
| Allowable Voltage Fluctuation | ±10% of rated voltage | |||
| Coil Insulation Type | Class B or equivalent | |||
| Power Consumption | DC (with power-saving circuit) | Inrush: 2.9 W Holding: 0.6 W | ||
| DC (without power-saving circuit) | 2.9 W | |||
| AC | 2 VA | |||
| Electrical Entry | Grommet, DIN terminal | |||
- *1This product is for dry air. Use in clean air and take care that drain and oil content do not get into this product.
- *2Use dry air when operating at low temperatures and with no condensation.
- *3Manual operation is available for DIN terminal type only.
- *4Vibration resistance: No malfunction occurred in 1 sweep test between 8.3 and 2,000 Hz. The test was performed in both energized and de-energized states in the axial and right angle directions of the main valve/armature. (Initial value)
Impact resistance: No malfunctions after testing using a drop-type impact tester under the following conditions: in the axial direction and at a right angle to the main valve and armature in both energized and non-energized states (once for each condition state). (Initial value) - *5DIN terminal type supports dust-proof and blow-proof (IP65) performance.
Structure Drawing

Pilot Operated 2-Port Solenoid Valve For Dry Air structure drawing
| Number | Part name | Material |
|---|---|---|
| 1 | Solenoid coil | - |
| 2 | Body | Resin |
| 3 | Fixed core | SUS |
| 4 | Armature | SUS |
| 5 | Return Spring | SUS |
| 6 | Poppet | NBR |
| 7 | Diaphragm assembly | H NBR / Resin |
Outline dimensional drawing
VQ20 Series
(Unit: mm)

Inline type / Grommet (G) VQ21A1-□G□-□-□ dimensional drawing 1

Inline type / Grommet (G) VQ21A1-□G□-□-□ dimensional drawing 2
*Broken line indicates bracket mounting type (-F).

L type / Grommet (G) VQ21A1-□G□-□-L□ dimensional drawing 1

L type / Grommet (G) VQ21A1-□G□-□-L□ dimensional drawing 2
*Broken line indicates bracket mounting type (-LF).
VQ30 Series
(Unit: mm)

DIN terminal (Y) VQ31A1-□Y□□-□-□ dimensional drawing 1

DIN terminal (Y) VQ31A1-□Y□□-□-□ dimensional drawing 2
*Broken line indicates bracket mounting type (-F).
Precautions
- *Product images may be representative images. Refer to the manufacturer's catalog for shape details.
- *See the SMC catalog for product information other than that detailed above.