Adjustable E-Vac® Vacuum Generator with Straight Through Muffler

EXAIR's Adjustable E-Vac® is a series of low cost, compressed air powered vacuum generators where the vacuum and flow rates
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EXAIR's Adjustable E-Vac® is a series of low cost, compressed air powered vacuum generators where the vacuum and flow rates can be easily adjusted to suit the application requirements. These vacuum pumps are ideal for a wide variety of pick and place, box opening, clamping, lifting, chucking and surface mounting applications. They are maintenance free and have no moving parts to wear out. The Standard Muffler has a closed end and is suitable for applications that are free of dust and debris. The Straight Through Muffler is recommended where particulates are present since it will not accumulate debris that can erode performance. Straight Through Mufflers offer the best sound level reduction (up to 26 dBA).

Applications

  • Pick and place of parts and equipment
  • Bag/package opening
  • Label placement
  • Vacuum forming
  • Mold evacuation
  • Vacuum filling
  • Leak testing
  • Evacuate containers
  • Clamping and chucking
  • Paper alignment and feed in printing equipment
  • Vacuum packaging
  • Surface mounting
  • Vacuum press for wood veneers and laminates
  • Carton forming
  • Robotic tooling
  • Vacuum liquids for testing

Advantages

  • Easy to set the vacuum level required by the application
  • Minimizes compressed air use
  • Compact, portable
  • No clog design passes dust, dirt, and contaminants straight through
  • Single stage design eliminates fluctuations in vacuum
  • Quiet
  • Instantaneous vacuum
  • Easy to mount at point of use
  • Lightweight, rugged
  • No moving parts – no maintenance
  • 4 models
  • Fast response – increases cycle time
  • Durable 6061 aluminum construction
  • Safe operation – no electricity

Adjustable E-Vac Vacuum Generators

Model
8.2 SCFM
232 SLPM
Model
15.4 SCFM
436 SLPM
Model
26.4 SCFM
748 SLPM
Model
62.7 SCFM
1,775 SLPM
Adjustable E-Vac Only
840008 840015 840030 840060
Adjustable E-Vac With Straight Through Muffler
840008M 840015M 840030M 840060M
Adjustable E-Vac Kit Without Straight Through Muffler
(Includes E-Vac, Vacuum Cups, Fittings, Tubing, Mounting Clip)
841008 841015 841030 841060
Adjustable E-Vac Kit With Straight Through Muffler
(Includes E-Vac, Muffler, Vacuum Cups, Fittings, Tubing, Mounting Clip)
841008M 841015M 841030M 841060M
Adjustable E-Vac Deluxe Kit Without Straight Through Muffler
(Includes E-Vac, Vacuum Cups, Fittings, Tubing, Mounting Clip, Filter & Regulator)
842008 842015 842030 842060
Adjustable E-Vac Deluxe Kit With Straight Through Muffler
(Includes E-Vac, Muffler, Vacuum Cups, Fittings, Tubing, Mounting Clip, Filter & Regulator)
842008M 842015M 842030M 842060M

Accessories

Accessories Needed To Build Your Vacuum System

EXAIR offers a variety of mufflers, tubing, check valves, and fittings that make it easy to build a vacuum system best suited to your vacuum application. In addition to these E-Vac vacuum generator accessories, there are other items that can help with the preparation and control of the compressed air.

When using E-Vac vacuum generators, it is important to use a source of clean, dry compressed air that will keep them operating at their peak performance. Automatic drain filter separators to keep the compressed air free of contaminants and moisture are recommended. Oil removal filters that remove oil particulate that is common to many compressed air systems are available. Pressure regulators, shutoff valves, compressed air hose, fittings, and solenoid valves (to electrically turn the compressed air on and off) are available as well.

Mufflers Optional silencing mufflers are available that permit maximum exhaust of the E-Vac unit so cycle speed is not reduced. The Standard Muffler (for use with In-Line E-Vacs only) has a closed end and is suitable for applications that are free of dust and debris. The Straight Through Muffler is recommended where particulate is present since it will not accumulate debris that can erode performance. Straight Through Mufflers offer the best sound level reduction (up to 26 dBA).

Fittings and Tubing

The vacuum port of the E-Vac has an NPT thread (a vacuum cup can be threaded directly into it). For vacuum cups that are remotely located, push-in connector fittings (most have global threads for use with NPT and BSP) can be installed on the E-Vac and the vacuum cup. Polyurethane vacuum tubing is available (10', 20', 30', 40' and 50' lengths) to connect them. For best performance, the length of the tubing should be minimized to achieve the best attach and release times.

Check Valve

A vacuum check valve is available to hold the vacuum in case of compressed air loss. It is designed for high flow so it doesn’t restrict airflow or slow the vacuum operation. Maximum vacuum can still be achieved without affecting the performance. E-Vac vacuum generators that are used without a check valve will release the load if there is a significant drop in compressed air pressure or the supply of compressed air is lost.

 Standard Mufflers
 ModelDescriptionThread
900800Standard Muffler1/4 MNPT
900801Standard Muffler3/8 MNPT
900802Standard Muffler1/2 MNPT
 Straight-Through Mufflers
 ModelDescriptionThread
890001Straight-Through Muffler1/4 MNPS
890002Straight-Through Muffler3/8 MNPS
890003Straight-Through Muffler1/2 MNPS
890004Straight-Through Muffler3/4 MNPS
890005Straight-Through Muffler1 MNPS
 Check Valves
 ModelDescriptionThread
900804Check Valve1/4 FNPT
900805Check Valve3/8 FNPT
900806Check Valve1/2 FNPT
 Vacuum Gauge
 ModelDescriptionThread
900811Vacuum Gauge0-30" Hg
 Push-In Connector
 ModelDescription
9007731/4 Tube X 1/8 FNPT
9007741/4 Tube X 1/8 Male Global Thread
9007751/4 Tube X 1/4 Male Global Thread
9007761/4 Tube X 3/8 Male Global Thread
9007773/8 Tube X 1/8 Male Global Thread
9007783/8 Tube X 1/4 Male Global Thread
9007793/8 Tube X 3/8 Male Global Thread
9007803/8 Tube X 1/2 Male Global Thread
 Push-In Swivel Elbow Connector
 ModelDescription
9007811/4 Tube X 1/8 Male Global Thread
9007821/4 Tube X 1/4 Male Global Thread
9007831/4 Tube X 3/8 Male Global Thread
9007843/8 Tube X 1/8 Male Global Thread
9007853/8 Tube X 1/4 Male Global Thread
9007863/8 Tube X 3/8 Male Global Thread
9007873/8 Tube X 1/2 Male Global Thread
 Push-In Swivel Branch Tee Connector
 ModelDescription
9007881/4 Tube X 1/8 Male Global Thread
9007891/4 Tube X 1/4 Male Global Thread
9007903/8 Tube X 1/4 Male Global Thread
9007913/8 Tube X 3/8 Male Global Thread
 Push-In Bulkhead Connector
 ModelDescription
900792Female Union - 1/4 Tube X 1/4 Tube
900793Female Union - 3/8 Tube X 3/8 Tube
900809Female Union - 1/4 Tube X 1/4 NPT
900810Female Union - 3/8 Tube X 1/4 NPT
 Vacuum Tubing
 ModelDescription
900795-101/4" Polyurethane Tubing - 10' (3m)
900795-201/4" Polyurethane Tubing - 20' (6m)
900795-301/4" Polyurethane Tubing - 30' (9m)
900795-401/4" Polyurethane Tubing - 40' (12m)
900795-501/4" Polyurethane Tubing - 50' (15m)
900796-103/8" Polyurethane Tubing - 10' (3m)
900796-203/8" Polyurethane Tubing - 20' (6m)
900796-303/8" Polyurethane Tubing - 30' (9m)
900796-403/8" Polyurethane Tubing - 40' (12m)
900796-503/8" Polyurethane Tubing - 50' (15m)
 Mounting Clip
 ModelDescription
900798Mounting Clip with Strap

Adjustable E-Vac is available in 4 sizes that have adjustable vacuum rates up to 25" Hg (85 kPa) and flow rates up to 81 SCFM (2,294 SLPM). Kit configurations that include vacuum cups, fittings, tubing and a mounting clip are available

Adjustable E-Vac Vacuum Generators

Choose the E-Vac by the SCFM (SLPM) flow that best suits the performance needed for your application.Adjustable E-Vac Kits give you the ability to experiment with an assortment of Vacuum Cups. E-Vac Kits include a Muffler, an assortment of (4) pairs of Vacuum Cups (closely matched to the performance of that E-Vac), (2) straight, (2) elbow and (1) tee vacuum fittings, 10' of vacuum tubing and a mounting clip.

Deluxe Kits include the same items as the standard kit with the addition of an automatic drain filter separator for the compressed air supply and pressure regulator (with coupler).

Set The Vacuum And Flow To The Application Requirements

Adjustable E-Vac vacuum generators are ideal for applications where a variety of vacuum levels are required, which is often the case when lifting a variety of materials. The amount of vacuum flow is easy to adjust. Simply loosen the lock ring by turning it counterclockwise, then, turn the exhaust of the Adjustable E-Vac to increase or decrease the flow. Once the desired level of vacuum and flow are obtained, the lock ring can be tightened to hold that setting. Tuning the vacuum and flow to the application requirements will help to minimize compressed air use.

Adjustable Vacuum Generator Performance

The amount of vacuum created varies with the porosity of the load being picked up. Units come from the factory set to 15" Hg (51 kPa). A maximum of 25" Hg (85 kPa) can be achieved on a solid, non-porous surface, but will require increasing the air consumption and vacuum flow.

Adjustable Vacuum Generator Performance

15" Hg (factory setting)

Model

Air Consumption

SCFM @ 80 PSIG

Sound Level in dBA

Vacuum Flow SCFM vs. Vacuum Level “Hg

(Set to 15" Hg)

No Muffler

Straight Through

Muffler

03691215
8400088.289775.804.683.712.591.530.00
84001515.4957718.7016.0012.027.754.050.00
84003026.4997436.7032.0025.6317.687.690.00
84006062.71078581.0067.0056.3329.0011.130.00

Adjustable Vacuum Generator Evacuation Time

15" Hg (factory setting)

Model

Evacuation time in seconds for a 1 ft. container down to listed vacuum (Set to 15"Hg)

03691215
8400080.001.202.424.468.4026.35
8400150.000.530.971.602.838.30
8400300.000.420.671.051.756.72
8400600.000.420.660.911.374.10

Adjustable Vacuum Generator Performance

25" Hg ( max setting)

Model

Air Consumption

SCFM @ 80 PSIG

Sound Level in dBA

Vacuum Flow SCFM vs. Vacuum Level “Hg

(Set to 25" Hg)

No Muffler

Straight Through

Muffler

0369121518212425
84000812.2104895.805.585.184.804.333.832.941.930.370.00
84001525.91078918.0016.5315.7014.1812.138.985.652.690.550.00
84003044.81078232.0029.0026.8324.1220.9214.639.906.131.190.00
840060105.21149277.0066.3362.3355.5045.0030.6718.378.382.100.00

Adjustable Vacuum Generator Evacuation Time

25" Hg (factory setting)

ModelEvacuation time in seconds for a 1 ft. container down to listed vacuum (Set to 25"Hg)
0369121518212425
8400080.000.881.632.563.865.568.1813.0329.0843.52
8400150.000.570.931.402.002.833.906.7714.8729.33
8400300.000.530.751.021.351.922.583.909.6325.38
8400600.000.350.530.731.001.331.883.028.9322.07

Adjustable Vacuum Generator Performance - Metric

51 kPa ( factory setting)

Model

Air Consumption

SLPM @ 5.5 BAR

Sound Level in dBA

Vacuum Flow SLPM vs. Vacuum Level kPa

Set to 51 kPa

No Muffler

Straight Through

Muffler

01020314151
840008232.28977164.2132.6105.073.443.20.0
840015436.19577529.5453.1340.3219.4114.70.0
840030747.599741039.2906.1725.8500.5217.80.0
8400601775.4107852293.61897.21595.1821.2315.30.0

Adjustable Vacuum Generator Evacuation Time - Metric

51 kPa (factory setting)

Model

Evacuation time in seconds for a .03 cu. meter container down to listed vacuum

Set to 51 kPa

01020314151
8400080.001.202.424.468.4026.35
8400150.000.530.971.602.838.30
8400300.000.420.671.051.756.72
8400600.000.420.660.911.374.10

Adjustable Vacuum Generator Performance - Metric

85 kPa (max setting)

Model

Air Consumption

SLPM @ 5.5 BAR

Sound Level in dBA

Vacuum Flow SLPM vs. Vacuum Level kPa

Set to 85 kPa

No MufflerStraight Through Muffler0102031415161718185
840008345.510489164.2157.9146.5135.9122.5108.383.254.510.50.0
840015733.410789509.7467.9444.6401.4343.3254.1160.076.115.60.0
8400301268.610782906.1821.2759.8682.9592.3414.1280.3173.733.80.0
8400602978.8114921982.11878.31765.01571.51274.2868.4520.1237.459.50.0

Adjustable Vacuum Generator Evacuation Time - Metric

85 kPa (max setting)

Model

Evacuation time in seconds for a .03 cu. meter container down to listed vacuum

Set to 85 kPa

0102031415161718185
8400080.000.881.632.563.865.568.1813.0329.0843.52
8400150.000.570.931.402.002.833.906.7714.8729.33
8400300.000.530.751.021.351.922.583.909.6325.38
8400600.000.350.530.731.001.331.883.028.9322.07

Adjustable E-Vac Dimensions

EXAIR Adjustable E-Vac Dimensions

Adjustable Vacuum Generator Dimensions

Model Air Inlet A Vacuum Inlet B   C D E F G H L M Exhaust PortJ Exhaust PortK
840008 1/8 NPT 1/4NPT in N/A 2.00 4.38 1.19 0.72 N/A 0.63 1.31 1/4 NPT N/A
mm N/A 51 111 30 18 N/A 16 33
840008M 1/8 NPT 1/4NPT in 6.63 2.00 4.38 1.19 0.72 0.75 0.63 1.31 1/4 NPT 1/4 NPS
mm 168 51 111 30 18 19 16 33
840015 3/8 NPT 1/2NPT in N/A 2.38 5.44 1.31 0.97 N/A 0.63 1.56 1/2 NPT N/A
mm N/A 60 138 33 25 N/A 16 40
840015M 3/8 NPT 1/2NPT in 9.69 2.38 5.44 1.31 0.97 1.25 0.63 1.56 1/2 NPT 1/2 NPS
mm 246 60 138 33 25 32 16 40
840030 3/8 NPT 1/2NPT in N/A 2.50 6.19 1.44 1.22 N/A 0.75 1.94 3/4 NPT N/A
mm N/A 64 157 37 31 N/A 19 49
840030M 3/8 NPT 1/2NPT in 13.63 2.50 6.19 1.44 1.22 2.00 0.75 1.94 3/4 NPT 3/4 NPS
mm 346 64 157 37 31 51 19 49
840060 1/2 NPT 3/4NPT in N/A 2.75 6.50 1.56 1.47 N/A 0.75 2.19 1 NPT N/A
mm N/A 70 165 40 37 N/A 19 56
840060M 1/2 NPT 3/4NPT in 13.94 2.75 6.50 1.56 1.47 2.00 0.75 2.19 1 NPT 1 NPS
mm 354 70 165 40 37 51 19 56

How The Adjustable E-Vac Works

How the Line Vac Works

Compressed air flows through the inlet (1), then through a single directed nozzle (2). As the airstream exhausts, it expands and increases in velocity prior to passing through the venturi (3). A vacuum inlet tangential to the primary airflow (4) is located at the suction point between the orifice and the venturi. The airflow that is drawn through the vacuum inlet mixes with the primary airstream, then exhausts on the opposite end (5).

The amount of vacuum flow can be adjusted. When facing the exhaust end, loosen the lock ring (turn counterclockwise), then turn the exhaust. To increase flow, turn the exhaust counterclockwise. To decrease flow, turn the exhaust clockwise. Be careful not to unthread the exhaust completely. There will be a point where no more vacuum flow can be achieved.

The amount of vacuum created varies with the porosity of the load being picked up. Units come from the factory set to 15” Hg if used on a solid, non-porous surface. A maximum of 25” Hg can be achieved on a solid, non-porous surface, but will require increasing the air consumption and vacuum flow.

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