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Warning 

Caution 

Caution 

Caution 

  Manifold Specification 

 

Mounting 

 

 
When mounting a valve on the manifold base, N.C. and N.O. can 
be reversed by a function plate orientation. Also, since cylinder 
acts reversely, confirm if the function plate is correctly mounted or 
not. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Specifications 

Function plate 

N.C. 

3-CL 

N.O. 

3-CP 

 

 

 

1. 

Each valve is fixed to the manifold base with two M4 mounting 
screws. Tighten the screws evenly when re-mounting. 

2. 

For mounting, tighten M4 or equivalent screws evenly into the 
mounting holes of the manifold base. 
Tightening torque of the mounting screw (M4): 1.4N

 

Changing from N.C. to N.O. 

 

 

 

 

 

 

 

 

 
If N.O. valve is needed, remove mounting screws of the required 
valve and turn over the function plate. (Make sure that there are 
gaskets on both sides of the plate.) 
Then, tighten the mounting screws to fix the valve to the manifold 
base. 

 

This product is delivered as N.C. valve. 

 

 

 

 

 

 

 

 

 

Port Direction 

 

 

1. 

For the common exhaust type, pressurization or evacuation of 
the R port can cause a malfunction. 

2. 

In the case of 6 stations or more, supply pressure from both 
sides of P port. In the case of common exhaust type, exhaust 
air from both sides of R port as well. 

 

Figure: For N.C. 

N.O. specifications 

N.C. specifications 

Function plate 

VTA301  Series 

Specific Product Precautions 1

 

 

 

Be sure to read before handling. 

- 7 -

 

VT301

∗∗

-OMH0007-B 

Summary of Contents for VTA301 Series

Page 1: ...Doc no VT301 OMH0007 B PRODUCT NAME 3 Port Air Operated Valve MODEL Series Product Number VTA301 Series ...

Page 2: ...ontents Safety Instructions 2 3 Design Selection 4 Mounting 4 Piping 5 Lubrication 5 Air Supply 6 Operating Environment 6 Maintenance 6 Specific Product Precautions 7 Troubleshooting 8 1 VT301 OMH0007 B ...

Page 3: ... when configuring the equipment 2 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 our products must be performed by an operator who is appropriately trained and experienced 3 Do not service or attempt to remove product and mac...

Page 4: ...roduct 3 Prior to using SMC products please read and understand the warranty terms and disclaimers noted in the specified catalog for the particular products 2 Vacuum pads are excluded from this 1 year warranty A 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 vacuum pad or failure ...

Page 5: ...pressure between the valve and the cylinder is released 7 Operation in a vacuum condition This product cannot be used for vacuum If installed in a vacuum piping it will cause vacuum leakage 8 Ventilation Provide ventilation when using a valve in a confined area such as in a closed control panel 9 Do not disassemble the product or make any modifications including additional machining It may cause h...

Page 6: ...o tighten the hexagonal portion of the body further at wrench tightening angle shown below For the reference value for the tightening torque refer to the table below 2 The gasket can be reused up to 6 to 10 times It can be replaced easily when it has sustained damage A broken gasket can be removed by holding it and then turning it in the same direction as loosening the thread If the gasket is diff...

Page 7: ...not have an explosion proof construction 3 Do not use in a place subject to heavy vibration and or shock 4 The valve should not be exposed to prolonged sunlight Use a protective cover Note that the valve is not for outdoor use 5 Remove any sources of excessive heat 6 If it is used in an environment where there is possible contact with oil weld spatter etc exercise preventive measures 1 Temperature...

Page 8: ...nting screw M4 1 4N m Changing from N C to N O If N O valve is needed remove mounting screws of the required valve and turn over the function plate Make sure that there are gaskets on both sides of the plate Then tighten the mounting screws to fix the valve to the manifold base This product is delivered as N C valve Port Direction 1 For the common exhaust type pressurization or evacuation of the R...

Page 9: ...e with a new one If a lubricant is used in the system after the replacing the valve use turbine oil Class 1 ISO VG32 If there is a large amount of condensate or condensate cannot be removed completely mount an auto drain or install a dryer and replace the valve 4 Reduce the amount of lubricant to the degree that no oil splashes out of the air exhaust port R port 5 Repair or replace actuators 6 Rep...

Page 10: ... Tokyo 101 0021 JAPAN Tel 81 3 5207 8249 Fax 81 3 5298 5362 URL http www smcworld com Note Specifications are subject to change without prior notice and any obligation on the part of the manufacturer 2018 SMC Corporation All Rights Reserved VT301 OMH0007 B ...

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