ZK2, Vacuum Unit, Ejector System with Valve

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A vacuum unit ejector system manufactured by SMC
[Features]
· Built-in digital pressure switch for vacuums, with energy-saving function. Cuts the air supply upon reaching vacuum: Leading to 90% reduction in air consumption
· Has a 2-stage ejector structure that increases suction flow rate by 50% and reduces air consumption by 30% (compared to SMC's single-stage ejectors)
· Compact and lightweight, with a 28% reduction in volume (88 cm³) and a 59% reduction in weight (81 g) compared to conventional products
· Reduced wiring for single units as well as manifolding.
· Once the supply valve is switched ON, the vacuum generation state is maintained even if the power is cut off. This reduces power consumption.

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Product specification
Part Numbers
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Vacuum Unit, Ejector System ZK2 Series Specifications

Ejector external appearance

Vacuum switch: pressure sensor, vacuum pressure switch, with energy-saving function, vacuum pressure switch, without vacuum switch
Nozzle diameter: 0.7 mm, 1 mm, 1.2 mm, 1.5 mm
Air pressure supply (PV) port: ø6 mm, ø1/4" one-touch fittings
Vacuum (V) port: ø6 mm, ø8 mm one-touch fittings, ø1/4", ø5/16" one-touch fittings
Supply and release valve rated voltage: 12, 24 V DC

Structural Drawing

With pressure sensor

Lead wire with connector for switch with energy-saving function

With high noise reduction silencer

With vacuum pressure switch

Components

Number	Part Name	Main Materials	Note
1	Valve Body Assembly	Resin	If not resin, HNBR, NBR, steel, etc. are also used
2	Needle Assembly	Brass	If not electroless nickel plated brass, resin, steel and NBR are also used
3	Ejector Body Assembly	Resin	If not resin, HNBR, NBR, steel, etc. are also used
4	Ejector Assembly	Resin	If not resin, NBR is used
5	Filter Case Assembly	Resin	Case body: polycarbonate

Replacement Parts

Number	Part Name	Note
6	Valve Assembly	-
7	Connector Assembly	Solenoid valve connector 3-wire (for double), 2-wire (for single)
8	One-Touch Fitting Assembly	Standard supply (PV) port: ø6 mm and ø1/4"
9	Sound-Absorbing Material	10 pieces per set
10	Vacuum Port Adapter Assembly	With one-touch fitting and filter element (case material: polycarbonate)
11	Filter Element	Nominal filtration rating: 30 μm, 10 pieces per set
12	Check Valve	For replacement or additions to prevent manifold exhaust interference, 10 pieces per set
13	Vacuum Pressure Switch Assembly	With 2 screws, 1 gasket
14	Lead Wire with Connector	-
15	Pressure Sensor Assembly	With 2 screws, 1 gasket
16	High Noise Reduction Silencer Case Assembly	With sound-absorbing material (part no.: ZK2-SE4-6-A)

Drawing / Single Unit

With high noise reduction silencer exhaust

With port exhaust

Ejector System, Single Unit, With Supply Valve / Release Valve, Without Switch / Pressure Sensor

(Unit: mm)

ZK2(A, B, G)□(K, R)□NL2-□ dimensional drawing

Ejector System, Single Unit, With Supply Valve, Without Switch / Pressure Sensor

(Unit: mm)

ZK2(A, B, G)□J□NL2-□ dimensional drawing

*1 For the silencer exhaust type, air is exhausted from the slits on both sides. (Do not cover both sides. Leave at least one side open for release.)
*2 For the port exhaust type, air is exhausted from the one-touch fitting.
*3 Pilot pressure exhaust is shared with ejector exhaust.
*4 See the manufacturer's catalog for dimensions with the bracket mounted.
*5 Nozzles with a diameter of 12 and 15 have an exhaust port.
*6 See the manufacturer's catalog for information regarding high noise reduction silencer case assembly part numbers and maintenance.

PV Port Type			B
Metric Size	06	ø6 mm	9.7
Inch Size	07	ø1/4"	12.3

V Port Type			A	C
Metric Size	06	ø6 mm	8.25	4
Metric Size	08	ø8 mm	11.4	6
Inch Size	07	ø1/4"	10.8	4.76
Inch Size	09	ø5/16"	11.4	6

Vacuum Unit ZK2 Series Manifold Structure

Exploded view of manifold

Components

Number	Part Name	Main Materials	Note
1	End Plate D Assembly	Resin	If not resin, HNBR, NBR, steel, etc. are also used
2	End Plate U Assembly	Resin	If not electroless nickel plated brass, resin, steel and NBR are also used

Replacement Parts

Number	Part Name	Note
3	Tension Bolt Assembly	2 pieces per set
4	Port Plug Assembly	Plug for changing PV port to single side supply specification. (Common for both metric and inches)
5	Port Plug Assembly	Plug for changing PS and PD ports to single side supply specifications. (Common for both metric and inches)
6	One-Touch Fitting Assembly	Metric size: ø8 mm, Inch size: ø5/16"
7	Sound-Absorbing Material	2 pieces per set, Material: non-woven fabric (silencer cover not included)
8	DIN Rail	For the recommended length for each manifold station, refer to the drawing.
9	Connector Housing Assembly	Even number of stations only (if a connector for odd numbers is required, specify the connector number required plus 1 station)

Increasing Manifold Stations (Individual Wiring Specifications)

1. Remove the tension bolts (2 pcs.)
2. Remove the end plate U (take care not to drop the gasket).
3. Mount a single unit for extra station(s) for manifolds to the end surface of the U side. (Do not let the gasket get caught)
4. Mount the end plate U with the appropriate tension bolts for the given number of stations. (Tightening torque: 0.75 N·m)

Notes

*Refer to the manufacturer's catalog for product information not detailed above.
The product images are representative images only.

Data to be displayed: 30; 45; 60

Part Number
ZK2A15K5NL2-08
ZK2A15R5CL-06-B
ZK2G15R5TL-06-BDJ

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	Additional Function	Air Consumption Flow Rate (l/min)	Vacuum Port One-Touch Fitting Size	Air Supply Port Connecting Port Shape	Air Supply Port One-Touch Fitting Size	Application	Suction Flow (l/min)	Nozzle Diameter	Exhaust specifications	Exhaust port	Combination of supply valve and release valve	Electrical entry	Vacuum pressure sensor	Output specifications	Unit specifications	Lead wire specifications	Accessories	Vacuum switch electrical entry	Vacuum break flow adjusting needle	Options
194.00 €	1	39 Days	Silencers / Filter / Valves For Vacuum Generation / Reverse Check Valve (Vacuum Retention) / Vacuum Destructive Valve	90	Ø8	Single-Action Coupling	Ø6	Single Item	67	1.5mm	Silencer exhaust	-	Supply valve (N.C.) / release valve (N.C.)	L-type plug connector	No	Without pressure switch/sensor	-	Lead wire with connector	No	Without pressure switch/sensor	No	-
315.05 €	1	98 Days	Silencers / Filter / Valves For Vacuum Generation / Reverse Check Valve (Vacuum Retention) / With LED Display, Pressure Switch for Vacuum / Vacuum Destructive Valve	90	Ø6	Single-Action Coupling	Ø6	Single Item	67	1.5mm	Silencer exhaust	-	Supply valve (self-holding / release valve linked) / release valve (N.C.)	L-type plug connector	Digital pressure switch for vacuum	PNP 2 outputs (0 to −101 kPa)	With unit selection function	Lead wire with connector	With 1 bracket for single unit (mounting screws attached)	With lead wire for sensors	No	-
278.56 €	1	98 Days	Silencers / Filter / Valves For Vacuum Generation / Reverse Check Valve (Vacuum Retention) / Vacuum Destructive Valve	90	Ø6	Single-Action Coupling	Ø6	Single Item	83	1.5mm	High-noise-reduction silencer exhaust	-	Supply valve (self-holding / release valve linked) / release valve (N.C.)	L-type plug connector	Pressure sensor	Analog output 1 to 5 V (-100 to 100 kPa)	-	Lead wire with connector	With 1 bracket for single unit (mounting screws attached)	With lead wire for pressure switches	Round lock nut type	With individual release pressure supply (PD) port

Basic information

Type	Unit	Ultimate Vacuum(kPa)	-91	Vacuum Port Connecting Port Shape	Single-Action Coupling
Operating Pressure Range(MPa)	0.3::0.6	Operating Temperature Range(°C)	-5::50	Rated voltage	24 V DC
Light/surge voltage suppressor	Yes	Manual	Non-locking type

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Basic Attributes

Additional Function
- Silencers
- Filter
- Valves For Vacuum Generation
- Reverse Check Valve (Vacuum Retention)
- With LED Display, Pressure Switch for Vacuum
- Vacuum Destructive Valve
- Central Exhaust Specification
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Air Consumption Flow Rate(l/min)
24

40

58

90
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Vacuum Port One-Touch Fitting Size
Ø6

Ø8
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Air Supply Port Connecting Port Shape
- Single-Action Coupling
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Air Supply Port One-Touch Fitting Size
- Ø6
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Application
- Single Item
- Manifold
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Suction Flow(l/min)
29

44

56

61

67

83
Clear
Exhaust specifications
Combined exhaust

High-noise-reduction silencer exhaust

Port exhaust

Silencer exhaust
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Exhaust port
- ø8
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Combination of supply valve and release valve
- Supply valve (N.C.) / release valve (N.C.)
- Supply valve (N.C.) / without release valve
- Supply valve (self-holding / release valve linked) / release valve (N.C.)
Clear
Electrical entry
- Collective wiring specifications (plug-in) (dedicated for manifold)
- L-type plug connector
Clear
Vacuum pressure sensor
- Digital pressure switch for vacuum
- Digital pressure switch for vacuum with energy-saving function
- No
- Pressure sensor
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Output specifications
- PNP 1 output (-100 to 100 kPa)
- Analog output 1 to 5 V (-100 to 100 kPa)
- Analog output 1 to 5 V (0 to −101 kPa)
- PNP 2 outputs (-100 to 100 kPa)
- NPN 2 outputs (0 to −101 kPa)
- PNP 2 outputs (0 to −101 kPa)
- Without pressure switch/sensor
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Unit specifications
- With unit selection function
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Lead wire specifications
- Lead wire with connector
- With dedicated lead wire for switch with energy-saving function
- Without lead wire with connector
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Accessories
- With 1 bracket for single unit (mounting screws attached)
- No
Clear
Vacuum switch electrical entry
- With dedicated lead wire for switch with energy-saving function
- With lead wire for pressure switches
- With lead wire for sensors
- Without pressure switch/sensor
Clear
Vacuum break flow adjusting needle
- No
- Round lock nut type
- Screwdriver operation type
Clear
Options
Manifold common release pressure supply specification

With individual release pressure supply (PD) port
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Type
- ZK2
Clear
Nozzle Diameter
0.7mm

1.0mm

1.2mm

1.5mm
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- 3D
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