Process Valve, 2 Port Valve For Compressed Air And Air-Hydro Circuit Control VNA Series
Caution
- Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details. - Product images may be representative images. Refer to the catalog for details.
Product Description
A 2 port valve for compressed air and air-hydro circuit control made by SMC.
[Features]
· A universal 2 port valve exclusively for controlling air pressure systems and air-hydro circuits
· Cylinder actuation by external pilot air
· Balance poppet type that allows normal and reverse flow
· Can be operated at 0 MPa
· Wide variations
Process Valve, 2 Port Valve For Air-Hydro Circuit Control VNA Series Specifications
VNA Series external pilot solenoid type external appearance
VNA Series air-operated type external appearance
VNA□01 JIS symbol
VNA□02 JIS symbol
VNA□03 JIS symbol
VNA□11 JIS symbol
| Fluid Temperature | VNA□□□A | *1 -5 to +60°C |
|---|---|---|
| VNA□□□B VNA□□□C | *1: -5 to +99°C (air-operated type only) | |
| Ambient Temperature | *1 -5 to +50°C (60°C for air-operated type) | |
| Proof Pressure | 1.5 MPa | |
| Operating Pressure Range | 0 to 1 MPa | |
| External Pilot Air | Pressure Range | 0.2 to 0.7 MPa |
| Lubrication | Not required (if lubricating, use turbine oil class 1 ISO VG32 *2) | |
| Temperature | *1: -5 to +50°C (60°C for air-operated type) | |
| Mounting Orientation | *3: Unrestricted | |
*1: No freezing.
*2: Do not lubricate if seal material is EPR.
*3: However, if the external pilot is a solenoid type, SMC recommends mounting the pilot solenoid valve in an upward facing vertical or horizontal orientation.
Model
| Model | Piping Connection Port Diameter Thread | Orifice Diameter ø(mm) | Flow Rate Characteristics | Weight (kg) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Measured with Air | Measured with Water* | ||||||||
| C (dm3/(bar·sec)] | b | Cv | Kv | Conversion Cv | Air Operated Type | External Pilot Solenoid Type | |||
| VNA1□□□-6A | 1/8 | 10 | 3.5 | 0.35 | 0.88 | 0.9 | 1.0 | 0.1 | 0.2 |
| VNA1□□□-8A | 1/4 | 5.9 | 0.24 | 1.5 | 1.5 | 1.7 | |||
| VNA1□□□-10A | 3/8 | 7.9 | 0.16 | 1.9 | 1.8 | 2.1 | |||
| VNA2□□□-10A | 15 | 16 | 0.35 | 3.8 | 3.9 | 4.5 | 0.3 | 0.4 | |
| VNA2□□□-15A | 1/2 | 23 | 0.25 | 4.8 | 4.6 | 5.4 | |||
| VNA3□□□-20A | 3/4 | 20 | 34 | 0.16 | 7.5 | 7.5 | 8.7 | 0.5 | 0.6 |
*This product cannot be used for water.
| Model | Piping Connection Port Diameter Thread | Orifice Diameter ø(mm) | Flow Rate Characteristics | Weight (kg) | |||
|---|---|---|---|---|---|---|---|
| Measured with Air | Measured with Water | Air Operated Type | External Pilot Solenoid Type | ||||
| Effective Area (mm2) | Kv | Conversion Cv | |||||
| VNA4□□□-25A | 1 | 25 | 220 | 10.4 | 12 | 0.8 | 0.9 |
| VNA5□□□-32A | 1 1/4 | 32 | 320 | 15.6 | 18 | 1.3 | 1.4 |
| VNA6□□□-40A | 1 1/2 | 40 | 500 | 24.2 | 28 | 2.1 | 2.2 |
| VNA7□□□-50A | 2 | 50 | 770 | 37.2 | 43 | 3.1 | 3.2 |
Pilot Solenoid Valve Specifications
| Piping Connection Port Diameter | 6A to 25A | 32 A to 50 A | ||
|---|---|---|---|---|
| Pilot Solenoid Valve | SF4-□□□-23 SF4-□D-23-Q SF4-□DZ-23-Q | VO307-□□□1 VO307-□D1-Q VO307-□DZ1-Q | ||
| Electrical Entry | Grommet, grommet terminal Conduit terminal DIN Terminal | Grommet, DIN terminal | ||
| Coil Rated Voltage (V) | AC (50/60 Hz) | 100 V, 200 V, other (semi-standard) | ||
| DC | 24 V, other (semi-standard) | |||
| Allowable Voltage Fluctuation | -15 to +10% of rated voltage | |||
| Temperature rise value | 35°C or less (when rated voltage is applied) | 50℃ or less (when rated voltage is applied) | ||
| Apparent Power | AC | Inrush | 5.6 VA (50 Hz), 5.0 VA (60 Hz) | 12.7 VA (50 Hz), 10.7 VA (60 Hz) |
| Holding | 3.4 VA (50 Hz), 2.3 VA (60 Hz) | 7.6 VA (50 Hz), 5.4 VA (60 Hz) | ||
| Power Consumption | DC | 1.8 W (without indicator light), 2 W (with indicator light) | 4 W (without indicator light), 4.2 W (with indicator light) | |
| Manual Operation | Non-locking push type Other (semi-standard) | Non-locking push type | ||
*See catalog for information on ordering pilot solenoid valves.
Diagram
VNA Series diagram
Component Parts
| Number | Part Name | Material | Notes |
|---|---|---|---|
| 1 | Body | Aluminum alloy | Platinum silver coated |
| 2 | Cover Assembly | Aluminum alloy | Platinum silver coated |
| *3 | Plate Assembly | Aluminum alloy | Seal material (NBR, FKM, EPR) |
| *4 | Valve Element | Aluminum alloy | Seal materials (NBR, FKM, EPR) |
| 5 | Piston Assembly | Aluminum alloy | - |
| 6 | Travel Spring | Stainless steel | - |
| 7 | Return Spring | Piano wire | - |
| 8 | Pilot Solenoid Valve | - | - |
*Parts 3 and 4 are for selection of valve composition.
Operating Principle
For VNA□01□, □11□ (N.C. Type)
- When pilot solenoid valve 8 is not energized (or when air is exhausted from 12 (P1) port of the air operated type), valve 4 linked to piston 5 is closed via the action of the return spring 7.
For Opening the Valve
- When the pilot solenoid valve is energized (or when pressurized air enters through port 12 (P1) of the air operated type), the pilot air that has entered under the piston moves upward, opening the valve.
For Closing the Valve
- When the power to the pilot solenoid valve is cut (or when fluid is exhausted from port 12 (P1) of the air operated type), the pilot air under the piston is exhausted and the valve closed via the action of the return spring.
For VNA□02□, □12□ (N.C. Type)
- In contrast for the N.C. type, when the power to the pilot solenoid valve is shut off (or when air is exhausted from port 10 (P2) of the air operated type), unenergized, the valve is held open via the return spring. When the pilot solenoid valve is energized (or when pressurized air enters through port 10 (P2) of the air operated type), the valve closes.
VNA□03□ (C.O. Type)
- The valve of the C.O. type, which has no return spring, is in an arbitrary position when air is exhausted through ports 12 (P1) and 10 (P2). When pressurized air enters port 12 (P1) (exhaust from port 10 [P2]), the valve opens. The valve closes when pressurized air enters port 10 (P2) (exhaust from port 12 [P1]).
Drawing
(Units: mm)
Piping connection port diameter: 6A, 8A, 10A dimensional drawing
*10 mm longer for EZ and TZ, and 17 mm longer for DZ.
- VNA1□□□-6A main port 1 (A), 2 (B): 1/8
- VNA1□□□-8A main port 1 (A), 2 (B): 1/4
- VNA1□□□-10A main port 1 (A), 2 (B): 3/8
(Units: mm)
Piping connection port diameter: 10A, 15A, 20A, 25A dimensional drawing
*10 mm longer for EZ and TZ, and 17 mm longer for DZ.
(Units: mm)
| Model | Main Port 1 (A), 2 (B) | A | B | C | D | E | F | G | H | I | J | K | L | M | N | P | Q | R | S | T | U |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VNA2□□□-10A | 3/8 | 63 | 42 | 29 | 14 | 72.5 | 80.5 | 75 | 80 | 84.5 | 124 | 125.5 | 144.5 | 52 | 26 | 4.5 | 24.3 | 2.3 | 25 | 34 | 55 |
| VNA2□□□-15A | 1/2 | ||||||||||||||||||||
| VNA3□□□-20A | 3/4 | 80 | 50 | 35 | 17.5 | 84 | 92 | 84 | 89 | 93.5 | 135.5 | 137 | 156 | 62 | 31 | 5.5 | 28.3 | 2.3 | 30 | 43 | 60.5 |
| VNA4□□□-25A | 1 | 90 | 60 | 40 | 20 | 100 | 108 | 90 | 95 | 99.5 | 151.5 | 153 | 172 | 72 | 36 | 6.5 | 33.3 | 2.3 | 35 | 49 | 73 |
(Units: mm)
Piping connection port diameter: 32A, 40A, 50A dimensional drawing
(Units: mm)
| Model | Main Port 1 (A), 2 (B) | Pilot Port 12 (P1), 10 (P2) | A | B | C | D | E | F | G | H | I | J |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VNA5□□□-32A | 1 1/4 | 1/8 | 105 | 77 | 53 | 26.5 | 120.5 | 20 | 129.5 | 170.1 | 211.5 | 55 |
| VNA6□□□-40A | 1 1/2 | 1/4 | 120 | 96 | 60 | 30 | 137 | 24 | 147 | 187.6 | 229 | 63 |
| VNA7□□□-50A | 2 | 1/4 | 140 | 113 | 74 | 37 | 160 | 24 | 170 | 210.6 | 252 | 74 |
*See the SMC catalog for information other than that detailed above.