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SMC relay valve.
[Features]
· Carries out fixed operational sequences based on the pneumatic signal received from the mechanical valve.
· Equivalent operation to an auxiliary relay in an electrical system.
[Specifications]
· Usable fluids: air
· Operating pressure: 0 to 1.0 MPa
· Pilot pressure: 0.15 to 1.0 MPa
· Ambient and operating air temperature: -5 to 60°C (no freezing)
· Lubrication: Not required (Use turbine oil Class 1 ISO VG32, if lubricated)
Part Number
Configured Part Number is shown.

Transmitters: Relay Valve VR4151/4152 Series product image (1)

Transmitters: Relay Valve VR4151/4152 Series product image (2)

VR4151 JIS symbol

VR4152 JIS symbol
| Applicable fluids | Air | |||||||
|---|---|---|---|---|---|---|---|---|
| Operating pressure | 0 to 1.0 MPa | |||||||
| Pilot pressure | 0.15 to 1.0 MPa | |||||||
| Ambient and operating air temperature | -5 to 60°C (no freezing) | |||||||
| Flow rate characteristics | - | C[dm3/(s·bar)] | b | Cv | ||||
| Side ported | 1(P) ⇔ 2(B)/4(A) | 1.6 | 0.15 | 0.38 | ||||
| 2(B)/4(A) ⇔ 3(S)/5(R) | 1.5 | 0.2 | 0.36 | |||||
| Bottom ported | 1(P) ⇔ 2(B)/4(A) | 1.6 | 0.2 | 0.38 | ||||
| 2(B)/4(A) ⇔ 3(S)/5(R) | 1.5 | 0.25 | 0.36 | |||||
| Connection port | 1/8 | |||||||
| Weight | Side ported | 350 g | ||||||
| Bottom ported | 300 g | |||||||
| Lubrication | Not required (use turbine oil class 1 ISO VG32, if lubricated) | |||||||
| Model | Function | Model | Indicator |
|---|---|---|---|
| VR4151-00-0 | Single pilot | Without sub-plate | - |
| VR4151-00-1 | ✓ | ||
| VR4151-01A-0 | With sub-plate Side ported | - | |
| VR4151-01A-1 | ✓ | ||
| VR4151-01B-0 | With sub-plate Bottom ported | - | |
| VR4151-01B-1 | ✓ | ||
| VR4152-00-0 | Double pilot | Without sub-plate | - |
| VR4152-00-1 | ✓ | ||
| VR4152-01A-0 | With sub-plate Side ported | - | |
| VR4152-01A-1 | ✓ | ||
| VR4152-01B-0 | With sub-plate Bottom ported | - | |
| VR4152-01B-1 | ✓ |

VR4151 structure drawing

VR4152 structure drawing
| Number | Description | Material |
|---|---|---|
| 1 | Valve | ADC |
| 2 | Sub-plate | ZDC |
| 3 | Pilot cover | ADC |
| 4 | Spool | Stainless steel |
| 5 | Sleeve | Stainless steel |
| 6 | Detent assembly | - |
| 7 | Piston cover | Brass |
| 8 | Manual button | POM |
| 9 | Piston | POM |
| 10 | Spring | Steel wire |
| 11 | Spring | Stainless steel |
| 12 | Gasket | NBR |
| 13 | Gasket | NBR |
| 14 | O-ring | NBR |

Model number example
(Unit: mm)

Side ported, dimensional drawing
(Unit: mm)

Bottom ported, dimensional drawing
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Type | Thread type | Option | Indicator light |
|---|---|---|---|---|---|---|---|---|
MYR 356.88 | 1 Piece(s) | 17 Day(s) or more | Single pilot | None | Without sub-plate | None | ||
MYR 498.82 | 1 Piece(s) | 21 Day(s) | Single pilot | None | Without sub-plate | Yes | ||
MYR 393.30 | 1 Piece(s) | 9 Day(s) or more | Single pilot | Rc | Subplate, side piping type | None | ||
MYR 410.83 | 1 Piece(s) | 9 Day(s) or more | Single pilot | Rc | Subplate, side piping type | Yes | ||
MYR 524.43 | 1 Piece(s) | 21 Day(s) | Single pilot | Rc | With sub-plate, side piping type | None | ||
MYR 570.78 | 1 Piece(s) | 21 Day(s) | Single pilot | Rc | With sub-plate, side piping type | Yes | ||
MYR 524.43 | 1 Piece(s) | 21 Day(s) | Single pilot | NPT | Subplate, side piping type | None | ||
MYR 570.78 | 1 Piece(s) | 21 Day(s) | Single pilot | NPT | Subplate, side piping type | Yes | ||
- | 1 Piece(s) | Quote | Single pilot | NPT | With sub-plate, side piping type | None | ||
MYR 364.54 | 1 Piece(s) | 14 Day(s) or more | Double pilot | None | Without sub-plate | None | ||
MYR 404.15 | 1 Piece(s) | 17 Day(s) or more | Double pilot | None | Without sub-plate | Yes | ||
MYR 422.58 | 1 Piece(s) | 14 Day(s) or more | Double pilot | Rc | Subplate, side piping type | None | ||
MYR 473.08 | 1 Piece(s) | 3 Day(s) | Double pilot | Rc | Subplate, side piping type | Yes | ||
MYR 419.90 | 1 Piece(s) | 17 Day(s) or more | Double pilot | Rc | With sub-plate, side piping type | None | ||
MYR 580.92 | 1 Piece(s) | 21 Day(s) | Double pilot | Rc | With sub-plate, side piping type | Yes | ||
- | 1 Piece(s) | Quote | Double pilot | G | With sub-plate, side piping type | Yes | ||
- | 1 Piece(s) | Quote | Double pilot | NPT | Subplate, side piping type | None |
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| Type | Relay Device | Connection port size | 1/8 |
|---|
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