What is a vacuum generator and how does it work?

A vacuum generator is a device that utilizes compressed air to create a vacuum. It operates based on two fundamental principles of fluid dynamics: the Venturi effect and Bernoulli's principle. As compressed air enters and accelerates through a narrowed section of the venturi nozzle, Bernoulli's principle explains that the pressure of the air decreases, which the Venturi effect then utilizes to convert the kinetic energy of the moving air into a potential energy vacuum. This dual-principle operation makes vacuum generators highly effective for applications requiring quick and reliable vacuum creation.

What are the advantages of pneumatic vacuum generators?

Pneumatic vacuum generators offer several benefits including compact design, ease of installation, low maintenance, and energy efficiency. They are particularly suitable for applications with limited space and where electrical power may not be readily available.

How do electric and pneumatic vacuum generators differ?

Electric vacuum generators use an electric motor to drive a pump that creates vacuum. In contrast, pneumatic vacuum generators use compressed air passing through a venturi to create vacuum. Electric generators are generally more powerful and quieter, but pneumatic types are simpler, more compact, and often more cost-effective.

What are the typical applications of vacuum generators?

Vacuum generators are widely used in industrial applications such as robotics, pick-and-place systems, material handling, packaging, and automation processes. They are essential in providing the suction needed to manipulate objects.

Can you provide information on the maximum vacuum level a vacuum generator can achieve?

The maximum vacuum level achievable by a vacuum generator depends on its design and operating conditions, but typically, these devices can create vacuum levels up to 85-90% (or -85 to -90 kPa). For specific product capabilities, refer to the product specifications.

What maintenance is required for vacuum generators?

Vacuum generators require minimal maintenance. Regular checks for air leaks, blockages, and ensuring clean air supply are generally sufficient to maintain optimal performance.

How does a vacuum generator affect electricity usage in an industrial setting?

Electric vacuum generators consume electrical power based on their motor size and usage pattern. Pneumatic vacuum generators, while powered by compressed air, can influence overall energy efficiency by the air compressor's electrical usage. It’s important to select the right type based on your facility's power and air supply infrastructure.

What are the differences between a vacuum generator and a vacuum ejector?

A vacuum generator and a vacuum ejector refer to essentially the same device in different contexts. Both use compressed air to create a vacuum but may vary slightly in design based on their specific application or industry terminology.

How do I choose the right vacuum generator for my application?

Selecting the right vacuum generator involves considering factors such as the volume and frequency of vacuum needed, the environmental conditions, power availability, and specific application requirements like speed and precision. Consult with a specialist or refer to detailed product specifications to match your needs.

How can I maintain and enhance the performance of my vacuum generator?

To keep your vacuum generator operating at its best, regular maintenance and the right components are crucial. If you're dealing with a filter that's seen better days or valves that could use an upgrade for more efficient performance, having access to quality replacement parts is key. You'll find everything from durable vacuum pumps that form the core of your system’s functionality, to meticulously designed vacuum fitting parts that ensure everything is perfectly sealed. Don’t overlook our comprehensive range of vacuum-related devices, which are essential for any enhancements or repairs your setup might require. These components are vital for maintaining the high standards of performance and reliability your industrial applications rely on.

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Vacuum Generators, Vacuum Ejectors（Vacuum Port Connecting Port Shape：Rc1/8）

Vacuum generators and ejectors are machines that generate a vacuum. Vacuum generation methods are different, and vacuum generators are used to create a vacuum using compressed air and carry it by suction. When the compressed air flows into the diffuser, it is jetted at a high speed and the pressure drops, creating a vacuum. It is composed of a nozzle and a diffuser, and the degree of the vacuum pressure changes depending on the shape and dimensions. Ejectors, on the other hand, use water, steam, oil, etc. to create a vacuum. This is a mechanism in which the material that has been heated and turned into steam is injected at a high speed, so that the lower stage is compressed. It consists of jets, cylinders, boilers, pipe heaters, heat insulators with different widths, etc. The ejected steam is cooled and returns to the boiler again. Shapes and performances vary depending on the type, such as those with a solenoid valve, elbow type, and compact type.

Configure

Specification/Dimensions

Additional Function
- Silencers
- Filter
- Valves For Vacuum Generation
- Reverse Check Valve (Vacuum Retention)
- Mechanical Type, Pressure Switch for Vacuum
- With LED Display, Pressure Switch for Vacuum
- Air Timer Type Vacuum Release Valves
- Vacuum Destructive Valve
- Vacuum Destruction Support
- Central Exhaust Specification
- Not Provided
Clear

Type
- Direct Electromagnetic Valve Mounting Type Elbows
- Direct Electromagnetic Valve Mounting Type Straight
- Pipe Type
- Square
- Pad Direct Mounting Type, Elbow
- Pad Direct Mounting Type, Straight
- Unit
- Related Components
Details

Clear

Ultimate Vacuum(kPa)
-93.1

-93

-92

-91.8

-91

-90.4

-90

-89

-88

-87

-86.7

-86

-84

-80

-78

-74

-67

-66.5

-66

-57

-53

-48

-47

-5.0

-2

0 to -101.3
Clear

Suction Flow(l/min)
1

1.8

2

3

3.2

3.5

4

4.5

5

6

7

7.5

8

9

10

10.5

11

11.5

12

12.5

13

15

16

18

20

21

22

23

25

26

27

28

29

30

34

35

36

37

38

40

42

44

45

46

50

52

54

55

56

58

61

63

66

67

72

74

75

76

78

80

82

83

84

85

88

89

90

95

95$36$42

95$42

95$42$24

95$42$40

95$42$70

95$42$84

95$42$180

95$63$42

95$110$42

100

104

105

110

123

128

130

132

136

140

155

160

174

180

200

225

250

300

305

350

600

740
Clear

Air Supply Port Connecting Port Shape
- M5
- Rc1/8
- R1/8
- R1/4
- G1/8
- 1/8-27 NPT
- M3
- Rc1/4
- M6
- R3/8
- R1/2
- One-Touch Coupling
- One-Touch Fitting Elbow
- Rc3/8
- NPT3/8
- NPTF1/8
- NPT1/4
Clear

Vacuum Port Connecting Port Shape
- M5
- Rc1/8
- R1/8
- R1/4
- R3/8
- M3
- Rc1/4
- M6
- R1/2
- One-Touch Coupling
- One-Touch Fitting Elbow
- Others
- Rc3/8
Clear

Vacuum Port One-Touch Fitting Size
1/2 (ø12.7)

1/4 (Ø6.35)

1/8 (ø3.18)

Ø1.8

ø2

Ø3

3/8 (ø9.53)

ø3.2

Ø4

5/16 (Ø7.94)

5/32 (Ø3.97)

Ø6

Ø8

Ø10

Ø12

Ø16
Clear

Air Supply Port One-Touch Fitting Size
- Ø3
- Ø4
- Ø6
- Ø8
- Ø10
- 5/32 (Ø3.97)
- 1/4 (Ø6.35)
- 5/16 (Ø7.94)
- 3/8 (ø9.53)
Clear

Nozzle Dia.
0.3mm

0.4mm

0.5mm

0.6mm

0.7mm

1.0mm

1.2mm

1.5mm

2.0mm

2.5mm

3.0mm

Others
Drawing

Clear

Application
- Single Item
- Manifolds
Clear

Air Consumption Flow Rate(l/min)
3.5

3.5 (N.C.) / 4 (Latching)

3.5 (N.C.) / 4 (latching)

3.7

4.5

6.5

6.5 (N.C.) / 8.5 (Latching)

6.5 (N.C.) / 8.5 (latching)

7.4

8

10

11.5

12

13

13.2

14

17

18

22.5

22.6

23

23$46$150

23$70$150

23$150

23$150$200

24

27

28

30

33

34

40

44

45

46

47

47.5

48

48.5

50

52

53

57

58

60

63

70

79.5

84

85

86

88

90

100

100$23$150

102

110

113

126

145

150

155

160

162

180

194

196

200

265

270

300

385
Clear

Type of Related Component
- Holders / Brackets
- Replacement Filters
- Pressure Switches for Maintenance Components
- Manifold Base
- Block Plates
- Vacuum Fall Prevention Valves
- Manifold
- Valve Unit
- Ejector Unit
- Valve Body Ass'y
- Supply Valve (N.O.)
- Release Valve (N.C.)
- Vacuum Port Adapter Ass'y
- Filter Element
- Sound Absorbing Material
- Pressure Sensor Ass'y
- Ejector Component Part
- Solenoid Valve
- Vacuum Pressure Switch
Clear

Brand	(0) (0) CHELIC (1) CKD (0) ESCO (0) FESTO (0) KOGANEI (0) MYOUTOKU (1) PISCO (0) SMC (8)
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Days to Ship	All Same day 1 Day(s) or Less 3 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less Others

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Box-Type Vacuum Ejector (Built-In Silencer) ZH Series

SMC

Lightweight and compact vacuum ejector.
[Features]
· Single-action and screw-in connections can be combined
・ Body can be attached and fixed
・ Enclosure type (built-in silencer) type

From: ฿ 672.35
Days to Ship: 3 Day(s)

3 Day(s)

Compare

Body Ported Type Vacuum Ejector ZH Series

Until 31/03/2025

Body Ported Type Vacuum Ejector ZH Series

SMC

An ejector manufactured by SMC.
[Features]
· Compact and lightweight.

From: ฿ 398.65
Special Price
Days to Ship: Same day

Same day

Compare

Vacuum Ejector With Valve And Switch ZM Series

Until 31/03/2025

Vacuum Ejector With Valve And Switch ZM Series

SMC

An ejector manufactured by SMC.
[Features]
· All-in-one.
· Capable of manifolding.
· Maximum suction flow rate increased by 40%.
· Maximum vacuum pressure -84 kPa.
· Compact and lightweight.
· Air-operated type.

From: ฿ 378.25
Special Price
Days to Ship: Same day

Same day

Compare

In-Line Type Vacuum Ejector ZU□A Series

SMC

An ejector manufactured by SMC.
[Features]
• Vacuum port and supply port are located collinear to each other to facilitate easy piping.
· Lightweight, as the body is made of resin.

From: ฿ 419.90
Days to Ship: 3 Day(s)

3 Day(s)

Compare

Vacuum Generator VES Series

CHELIC

This is a vacuum generator that allows selecting of a silencer and switch. There are 2 types of ultimate vacuum pressure achieving levels to select from, -91.8 kPa and -86.7 kPa. Some of the product are available in-stock, so same day shipping is possible. Compact jig cylinder manufactured by a pneumatic equipment / special parts manufacturing company of Taiwan established in 1988. Sales have expanded world-wide and the company has gained a high reputation globally.

From: ฿ 837.64
Days to Ship: 7 Day(s)

7 Day(s)

Compare

Large Vacuum Unit, Ejector System ZR Series

Until 31/03/2025

Large Vacuum Unit, Ejector System ZR Series

SMC

A vacuum unit ejector system manufactured by SMC.
[Features]
· Large suction flow rate, suitable when used with large-sized pads or multiple pads.
· Nozzle diameters: ø1.0, ø1.3, ø1.5, ø1.8, ø2.0
· Vacuum unit suitable for workpieces of 0.5 to 5 kg.
· Modular design makes it possible to combine functions as required.
· Safe due to vacuum self-holding function by means of double solenoid valves.
· Compact and lightweight.
· Capable of manifolding.

From: ฿ 2,856.85
Special Price
Days to Ship: 3 Day(s)

3 Day(s)

Compare

Small Vacuum Unit ZB Series Manifold and Optional Parts

SMC

[Features]A manifold for compact vacuum ejectors ZB series.

From: ฿ 934.15
Days to Ship: 3 Day(s)

3 Day(s)

Compare

Multistage Ejector ZL112 Series

SMC

An energy-saving ejector.
[Features]
· Large flow rate, 3-stage diffuser construction.
· A 250% increase in the suction flow rate and a 20% decrease in air consumption due to the 3-stage diffuser construction.
· One-touch fittings make piping work easy.
· Suction flow rate: 100 L/min (ANR).
· Air consumption: 63 L/min (ANR).

From: ฿ 5,020.10
Days to Ship: 23 Day(s)

23 Day(s)

Compare

Vacuum ejector every mechanism stationary CVA2 convum

Until 31/03/2025

Vacuum ejector every mechanism stationary CVA2 convum

MYOUTOKU

[Features]
· Allows free combination of CONVUM, a pressure switch, and a vacuum break valve.
· It is an electromagnetic valve for vacuum generation.
· Vacuum break valve mounted

From: ฿ 7,787.10
Special Price
Days to Ship: Same day

Same day

Compare

Large Size Vacuum Module: Vacuum Pump System ZR Series

SMC

A vacuum module vacuum pump system ideal for use with multiple or large-sized pads.
[Features]
・ Vacuum unit suitable for workpieces of 0.5 to 5 kg
・ Modular design / combination of required functions
・ Combinations compatible with both vacuum pump system and vacuum ejector system are possible
・ Safety measures, self-holding function with double solenoid
・ Compact and lightweight
・ It can be manifolded

From: ฿ 1,637.95
Days to Ship: 3 Day(s)

3 Day(s)


Brand
Product Series
CAD
From
Days to Ship
Additional Function
Type
Ultimate Vacuum(kPa)
Suction Flow(l/min)
Air Supply Port Connecting Port Shape
Vacuum Port Connecting Port Shape
Vacuum Port One-Touch Fitting Size
Air Supply Port One-Touch Fitting Size
Nozzle Dia.
Application
Air Consumption Flow Rate(l/min)
Type of Related Component

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025	You can add up to 6 items per a category to the compare list.Compare
Brand	SMC	SMC	SMC	SMC	CHELIC	SMC	SMC	SMC	MYOUTOKU	SMC
Product Series	Box-Type Vacuum Ejector (Built-In Silencer) ZH Series	Body Ported Type Vacuum Ejector ZH Series	Vacuum Ejector With Valve And Switch ZM Series	In-Line Type Vacuum Ejector ZU□A Series	Vacuum Generator VES Series	Large Vacuum Unit, Ejector System ZR Series	Small Vacuum Unit ZB Series Manifold and Optional Parts	Multistage Ejector ZL112 Series	Vacuum ejector every mechanism stationary CVA2 convum	Large Size Vacuum Module: Vacuum Pump System ZR Series
CAD	2D / 3D	2D / 3D	2D / 3D	2D / 3D		2D / 3D		2D / 3D		2D / 3D
From	฿ 672.35	฿ 398.65 Special Price On Sale Until 31/03/2025	฿ 378.25 Special Price On Sale Until 31/03/2025	฿ 419.90	฿ 837.64	฿ 2,856.85 Special Price On Sale Until 31/03/2025	฿ 934.15	฿ 5,020.10	฿ 7,787.10 Special Price On Sale Until 31/03/2025	฿ 1,637.95
Days to Ship	3 Day(s)	Same day	Same day	3 Day(s)	7 Day(s)	3 Day(s)	3 Day(s)	23 Day(s)	Same day	3 Day(s)
Additional Function	Silencers	Silencers	Silencers / Filter / Valves For Vacuum Generation / Vacuum Destructive Valve	Not Provided	Silencers / Mechanical Type, Pressure Switch for Vacuum	Silencers / Filter / Valves For Vacuum Generation / Mechanical Type, Pressure Switch for Vacuum / With LED Display, Pressure Switch for Vacuum / Vacuum Destructive Valve / Vacuum Destruction Support / Central Exhaust Specification	-	Silencers / Filter / Valves For Vacuum Generation / Vacuum Destructive Valve	Silencers / Valves For Vacuum Generation / Mechanical Type, Pressure Switch for Vacuum / With LED Display, Pressure Switch for Vacuum / Vacuum Destructive Valve / Vacuum Destruction Support	Filter / Valves For Vacuum Generation / Mechanical Type, Pressure Switch for Vacuum / With LED Display, Pressure Switch for Vacuum / Vacuum Destructive Valve / Vacuum Destruction Support
Type	Unit	Direct Electromagnetic Valve Mounting Type Elbows / Pipe Type	Square	Pipe Type	Square	Unit	Related Components	Square	Direct Electromagnetic Valve Mounting Type Elbows	Unit
Ultimate Vacuum(kPa)	-89 ～ -48	-90 ～ -48	-84	-90 ～ -48	-91.8 ～ -86.7	-84 ～ -53	-	-84	-92 ～ -57	-
Suction Flow(l/min)	8 ～ 26	6 ～ 52	15 ～ 66	7 ～ 16	6 ～ 27	25 ～ 132	-	100	6 ～ 36	-
Air Supply Port Connecting Port Shape	Rc1/8 / One-Touch Coupling	Rc1/8 / One-Touch Coupling	Rc1/8	Rc1/8	Rc1/8	Rc1/8	-	-	Rc1/8	Rc1/8
Vacuum Port Connecting Port Shape	Rc1/8	Rc1/8	Rc1/8	Rc1/8	Rc1/8	Rc1/8	Rc1/8	Rc1/8	Rc1/8	Rc1/8
Vacuum Port One-Touch Fitting Size	-	-	-	-	-	-	-	Ø12	-	-
Air Supply Port One-Touch Fitting Size	Ø6	Ø6	-	-	-	-	-	Ø6	-	-
Nozzle Dia.	0.5mm ～ 1.0mm	0.5mm ～ 1.0mm	0.5mm ～ Others	0.5mm ～ 0.7mm	0.5mm ～ 1.0mm	1.0mm ～ Others	-	1.2mm	0.5mm ～ 1.0mm	-
Application	Single Item	Manifolds	Single Item / Manifolds	Manifolds	Single Item	Single Item / Manifolds	-	Single Item	Single Item	Single Item
Air Consumption Flow Rate(l/min)	13 ～ 52	13 ～ 52	17 ～ 110	14 ～ 28	13 ～ 44	53 ～ 194	-	63	13 ～ 44	-
Type of Related Component	-	-	-	-	-	-	Manifold	-	-	-

Related Categories to Vacuum Generators, Vacuum Ejectors

FAQ Vacuum Generators, Vacuum Ejectors

Question: What is a vacuum generator and how does it work?: Answer: A vacuum generator is a device that utilizes compressed air to create a vacuum. It operates based on two fundamental principles of fluid dynamics: the Venturi effect and Bernoulli's principle. As compressed air enters and accelerates through a narrowed section of the venturi nozzle, Bernoulli's principle explains that the pressure of the air decreases, which the Venturi effect then utilizes to convert the kinetic energy of the moving air into a potential energy vacuum. This dual-principle operation makes vacuum generators highly effective for applications requiring quick and reliable vacuum creation.
Question: What are the advantages of pneumatic vacuum generators?: Answer: Pneumatic vacuum generators offer several benefits including compact design, ease of installation, low maintenance, and energy efficiency. They are particularly suitable for applications with limited space and where electrical power may not be readily available.
Question: How do electric and pneumatic vacuum generators differ?: Answer: Electric vacuum generators use an electric motor to drive a pump that creates vacuum. In contrast, pneumatic vacuum generators use compressed air passing through a venturi to create vacuum. Electric generators are generally more powerful and quieter, but pneumatic types are simpler, more compact, and often more cost-effective.
Question: What are the typical applications of vacuum generators?: Answer: Vacuum generators are widely used in industrial applications such as robotics, pick-and-place systems, material handling, packaging, and automation processes. They are essential in providing the suction needed to manipulate objects.
Question: Can you provide information on the maximum vacuum level a vacuum generator can achieve?: Answer: The maximum vacuum level achievable by a vacuum generator depends on its design and operating conditions, but typically, these devices can create vacuum levels up to 85-90% (or -85 to -90 kPa). For specific product capabilities, refer to the product specifications.
Question: What maintenance is required for vacuum generators?: Answer: Vacuum generators require minimal maintenance. Regular checks for air leaks, blockages, and ensuring clean air supply are generally sufficient to maintain optimal performance.
Question: How does a vacuum generator affect electricity usage in an industrial setting?: Answer: Electric vacuum generators consume electrical power based on their motor size and usage pattern. Pneumatic vacuum generators, while powered by compressed air, can influence overall energy efficiency by the air compressor's electrical usage. It’s important to select the right type based on your facility's power and air supply infrastructure.
Question: What are the differences between a vacuum generator and a vacuum ejector?: Answer: A vacuum generator and a vacuum ejector refer to essentially the same device in different contexts. Both use compressed air to create a vacuum but may vary slightly in design based on their specific application or industry terminology.
Question: How do I choose the right vacuum generator for my application?: Answer: Selecting the right vacuum generator involves considering factors such as the volume and frequency of vacuum needed, the environmental conditions, power availability, and specific application requirements like speed and precision. Consult with a specialist or refer to detailed product specifications to match your needs.
Question: How can I maintain and enhance the performance of my vacuum generator?: Answer: To keep your vacuum generator operating at its best, regular maintenance and the right components are crucial. If you're dealing with a filter that's seen better days or valves that could use an upgrade for more efficient performance, having access to quality replacement parts is key. You'll find everything from durable vacuum pumps that form the core of your system’s functionality, to meticulously designed vacuum fitting parts that ensure everything is perfectly sealed. Don’t overlook our comprehensive range of vacuum-related devices, which are essential for any enhancements or repairs your setup might require. These components are vital for maintaining the high standards of performance and reliability your industrial applications rely on.